Report of the Brazilian Committee for Phase Diagrams of Materials

Transcrição

1 Report of the Brazilian Committee for Phase Diagrams of Materials 2011 APDIC Meeting Rio de Janeiro, Brasil May 2011

2 Highlights Phase Diagram Seminars in 2010 and (soon in) X CAPHAD Workshops in 2008, 2009 and 2010 and 2011 (post CAPHAD) Several groups in intense activity in collaboration with steelmaking industries

3 ABM Conference 2010 and X CAPHAD Organizing of the Phase Diagram Seminar in the 65 th International ABM Conference, Rio de Janeiro, RJ, July 2010 (15 + TMS-ABM) X CAPHAD: Contributions by USIMINAS, V&M, Villares Metals, Aperam, ArcelorMittal Monlevade, NS, USP, EE- USP, PUC-RIO, UFF

4 TMS- ABM International Congress- Together with ABM Congress in Rio de Janeiro 2010

5 65 th International ABM Conf. Rio de Janeiro, Phase Diagrams Session 1. Termodinâmica computacional aplicada ao estudo da precipitação em aços de alta resistência e baixa liga, Meire Guimarães age 2. Mould slag alumina pick-up due to chemical reactions at the metal-slag interface in the continuous casting process, Nestor Cezar Heck 3. Otimização do tratamento térmico de ferros fundidos brancos utilizando termodinâmica computacional, Eduardo Albertin 4. Estudo termodinâmico da formação de inclusões não-metálicas no aço SAE 8620, Wagner Viana Bielefeldt 5. Using thermochemical equilibria to study slags of the CaO-SiO2-CrOx-MgO system, Nestor Cezar Heck 6. THEORETICA INVESTIGATION OF Si TRANSFER FROM INJECTED PUVERIZED COA TO IRON, Nestor Cezar Heck 7. Transformações de fase em ímãs de Sm(CoFeCuZr)z, Sérgio Antonio Romero 8. Avaliação de Modelos Termodinâmicos para Precipitação em Aços IF, Alexandre Bellegard Farina 9. Novo modelo de energia de GIBBS para o espinélio A2MNO4, Rogerio Navarro Correia de Siqueira 10. AVAIAÇÃO EXPERIMENTA DAS REAÇÕES DE FASES NA REGIÃO RICA EM HÁFNIO DO SISTEMA HÁFNIO SIÍCIO BORO, João Carlos Jânio Gigolotti 11. ESTUDO DA FORMAÇÃO DA AUSTENITA EM AÇOS MUTIFÁSICOS, Fábio Dian Murari 12. Estudo teórico experimental de fatores que afetam a limpidez inclusionária de um aço SAE 1045, Humberto uiz Gama de Magalhaes 13. An epistemologic breakthrough: teaching (and learning) phase diagrams at the freshmen s years, Cláudio Geraldo Schon 14. ESTIMATIVA DE VISCOSIDADE EM ESCÓRIAS- APICACAO NO SISTEMA CaO-Al2O3-MgO-SiO2, Andre uiz Vasconcellos da Costa e Silva 15. Modelagem numérica e análise experimental da precipitação de carbonetos durante a soldagem de ligas de Ni-Cr-Fe modificadas com adições de Nb, Mo e Hf, Antonio Ramirez

6 Committee Activities Meeting at the ABM Conference Workshops in Ouro Preto,MG, PUC-Rio (2010) Worlshop in Rio de Janeiro by Prof Rizzo, PUC-Rio (2011)

7 UFOP Prof Carlos Silva The Committee in 2010 USIMINAS Dr Joao uiz Antunes EE-USP -orena Prof. G. Coelho, Prof C Nunes Calc./Exp Intermetallics UFF-Volta Redonda Prof. A. Costa e Silva Prof Flavio Ferreira Calc./Exp., St eels,slags Intermetallics Catholic University -Rio (PUC) Prof. R. Avillez - Exp./Calc. E.MAT, Coatings Prof. F.Rizzo - Exp. Coatings, Oxidation AM Monlevade Dr Joaquim C Neto UFSCar-São Carlos Prof. W.Botta Dr E. Borba. Exp.Alloys, Amorphous mat. UFRJ Prof Blas Universidade Estácio/INT Prof Brant Villares Metals DrCelso Barbosa IPD-CTEX Maj Cosendino, Cap Cardoso Borides Ex. IPT-São Paulo Dr. F. Beneducce Exp.(calc.) Slags, liquid metals USP-São Paulo Prof.H.Goldstein Dr.C.Schoen, Prof Capocci Exp/Calc. Alloys UFRGS-Porto Alegre Prof Villela, Prof Heck UNISINOS- Prof Moraes Exp./ Calcl. Alloys

8 ArcelorMittal Monlevade Investigators Humberto uiz Gama de Magalhães Joaquim Gonçalves Costa Neto Angelo Máximo Fernandes Marins César Takaci Sato Main Activities Calculations to improve continuous casting and castability of several steel grades, using computational thermodynamics Studies of Aluminum deoxidation effects on specialty steel cleanness using computation thermodynamics (thesis at UFOP)

9 aboratório Nacional de uz Síncrotron NS ( Group: Electron Microscopy aboratory (ME) Researchers: Principal: Dr. Antonio J. Ramirez Students: Jimy Unfried S. (PhD candidate) Andre Yoshio Goto Eduardo Bertoni da Fonseca Main areas of interest: Welding, welding metallurgy and phase transformations, electron microscopy: Phase transformation simulation in Ni-based superalloys (Ni-Cr-Fe) with Ti, Nb, Mo e Hf HSA microalloyed steels, stainless steels, including duplex: transformation in fusion and friction welding.

10 IPT - São Paulo SP Research staff Flávio Beneduce Neto Research areas Pyrometallurgical processing of metals and oxides. Process development Systems Optimizing heat treatment of white cast iron wear parts for mining industry Melt treatment of multicomponent white cast irons rolls (control of non-metallic inclusions) Modelling metallurgical reactors Si-X modeling and optimization: Si-C, Si-B Publications E. Albertin, F. Beneduce, M. Matsumoto, I. Teixeira. Optimizing heat treatment and wear resistance of high chromium cast irons using computational thermodynamics, Wear, 2011, in printing E. Albertin, F. Beneduce, Teixeira, I.O.. Otimização do tratamento térmico de ferros, 65º Congresso Anual da ABM, 26 a 30 de julho de 2010, Rio de Janeiro Beneduce, F. ; Ferreira Neto, J,. The use of computational thermodynamics for simulating the recycling of electric arc furnace dust in Waelz furnace. In: 8th Japan-Brazil Symposium on Dust Processing - Energy - Environment in Metallurgical Industries, 2010, Fukuoka. 8th Japan- Brazil Symposium on Dust Processing - Energy - Environment in Metallurgical Industries, p

11 Universidade Federal do Rio Grande do Sul- UFRGS Research Staff - Dr. Wagner V. Bielefeldt asid( - Prof. Dr.-Ing. Antônio C. F. Vilela asid coordinator - Prof. Dr.-Ing. Nestor C. Heck- NTCM coordinator ( -MSc. Jeferson. Klug -MScDaniel R. Silva Research Themes Steelmaking and processing: Engineering steel, Free cutting steel; nonmetallic inclusions; mould slags.

12 UFRGS collaboration with GERDAU UFRGS (Prof Vilela) started a strong collaboration with Gerdau Aços Especiais Charqueadas about 20 years ago. Many projects in steelmaking, continuous casting, etc. Student support and later hiring by Gerdau. Several thesis (MSc and undergraduate) and some dissertations (PhD).

13 UFRGS- Publications(cont.) BIEEFEDT, Wagner V.; VIEA, Antônio Cezar Faria. THERMODYNAMIC STUDY OF NON-METAIC INCUSION FORMATION IN SAE 1141 STEE. Matéria (UFRJ), v. 15, p , BIEEFEDT, Wagner V.; VIEA, Antônio Cezar Faria. COMPUTATIONA THERMODYNAMIC STUDY OF INCUSIONS FORMATION IN THE CONTINUOUS CASTING OF SAE 8620 STEE. Steel Research International, v. 81, p , BIEEFEDT, Wagner V.; VIEA, Antônio Cezar Faria. ESTUDO TERMODINÂMICO DA FORMAÇÃO DE INCUSÕES NÃO-METÁICAS NO AÇO SAE In: 65 Congresso da ABM -Internacional, 2010, Rio de Janeiro. 65 Congresso da ABM -Internacional, p BIEEFEDT, Wagner V.; VIEA, Antônio Cezar Faria. THERMODYNAMIC STUDY OF NON-METAIC INCUSION FORMATION IN SAE 1141 STEE. In: 1o TMS-ABM Congress, 2010, Rio de Janeiro. 1o TMS-ABM Congress, p

14 UFRGS - Publications KUG, J..; FREITAS, Suzana ancelotede; PEREIRA, Márcia Maria da Silva Monteiro; HECK, N. C.; SIVA, D. dos R. ; VIEA, A.,C.,F; JUNG, Detlef. FUORINE-FREE MOUD POWDERS FOR BIET CASTING TECHNOOGICA PARAMETERS. In: 41st Steelmaking Seminar International, 2010, Resende RJ, p KUG, J..; HECK, N. C.; SIVA, D. dos R. ; VIEA, A. C. F. MOUD SAG AUMINA PICK- UP DUE TO CHEMICA REACTIONS AT THE META-SAG INTERFACE IN THE CONTINUOUS CASTING PROCESS. In: 65ºCongresso Anual da ABM Internacional, 2010, Rio de Janeiro RJ. HECK, N. C.; KUG, J..; VIEA, A. C. F. USING THERMOCHEMICA EQUIIBRIA TO STUDY SAGS OF THE CaO-SiO2-CrOx-MgO SYSTEM. In: 65ºCongresso Anual da ABM Internacional, 2010, Rio de Janeiro RJ. HECK, N. C. THEORETICA INVESTIGATION ON SiTRANSFER FROM INJECTED PUVERIZED COA TO IRON. In: 65ºCongresso Anual da ABM Internacional, 2010, Rio de Janeiro RJ.

15 USIMINAS- Ipatinga Steelmill MG, Brazil Grupo de Redução (Reduction) Blast furnace slag calculations Cálculos Termoquímicos de Escória de Altos Fornos Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Waleska Effegen de Oliveira Grupo de Tecnologia da Fabricação do Aço: (Steelmaking) adle furnace slag development Acerto da Composição Química de Escórias de Panela Visando impidez e Dessulfuração do Aço - Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Amilton Carlos Cardoso Pinheiro Filho Converter slag development for de-p Ajuste de Escória de Refino Primário Visando Desfosforação do Aço - Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Hugo Filipe Parreiras Gonçalves Model for Peritetic reaction control Desenvolvimento de um Modelo para a Previsão da Ocorrência da Reação Peritética Durante a Solidificação dos Aços - Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga eonardo José Silva de Oliveira

16 USIMINAS- Ipatinga Steelmill MG, Brazil Grupo de Novos Materiais (New Materials) 65º Congresso da ABM Internacional Rio de Janeiro, 26 a 30 Julho de 2010 High Chromium Cast Iron microstructure Evolution: Evolução da microestrutura de ferro fundido branco de alto cromo, submetido a temperaturas elevadas por longos tempos Marcos Machado Matsumoto Ivênio de Oliveiva Teixeira Nicolau Apoena Castro Grupo de Produtos aminados a Quente (Hot Rolling) Seamless tube steel X20Cr13: Caracterização Microestrutural do Aço DIN X20Cr13 no Pré-aquecimento para aminação de Tubos sem Costura AGE, M. G., BARBOSA, R., CARVAHO, R. N. Contribuição técnica ao 64 Congresso Anual da ABM Belo Horizonte, MG, 13 a 17 de Julho de 2009 Emprego da Termodinâmica Computacional e da Metalografia na Quantificação de Ferrita Delta em Aço DIN EN X20Cr13 AGE, M. G., BARBOSA, R., CARVAHO, R. N. revista Tecnologia em Metalurgia e Materiais HSA STEES Termodinâmica Computacional Aplicada ao Estudo da Precipitação em Aços de Alta Resistência e Baixa iga AGE, M. G., ARAÚJO, C. S. 65 Congresso Anual da ABM Rio de Janeiro, RJ, 26 a 30 de Julho de 2010 Estabelecimento de Projetos de iga por Termodinâmica Computacional Meire Guimarães age Relatório de Estudo de P&D, Março/ Centro de Tecnologia Usiminas - Unidade Ipatinga Segregation studies during casting: Avaliação da Segregação de Elementos Químicos durante a Solidificação via Software Thermo-Calc Meire Guimarães age Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga

17 USIMINAS- Ipatinga Steelmill MG, Brazil Grupo de Produtos aminados a Frio (Cold Rolled Steels) Martensite formation in Multiphase Steels: Estudo da Formação da Austenita em Aços Multifásicos Fábio Dian Murari, André uiz Vasconcelos da Costa e Silva, Roberto Ribeiro de Avillez Contribuição técnica ao 65 Congresso Anual da ABM Rio de Janeiro, RJ, 26 a 30 de Julho de 2010 B, Nb effects in Dual Phase Steel: Estudo do Efeito do B na Capacidade de Expansão de Furos de Aço DP600 Processado via CAP Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Fábio Dian Murari Estudo do Efeito do Nb e dos Parâmetros de Overaging na Capacidade de expansão de furos de aço da classe DP800 Processado via CAP Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Fábio Dian Murari New Steel Development project: Simulação Computacional Aplicada à Pesquisa e ao Desenvolvimento de Aços Projeto em conjunto entre o Centro de Tecnologia Usiminas - Unidade Ipatinga e PUC-Rio Fábio Dian Murari Roberto Avillez PUC André uiz V. Costa e Silva - EEIMVR-UFF Grupo Processos de Revestimento Heat treatment effect in galvanizing Influência das Condições de Tratamento Térmico na Qualidade do Revestimento Galvanizado a Quente GA Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Henrique acerda Eleutério New coatings : Novos Revestimentos Metálicos Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Henrique acerda Eleutério New coating for high strength steel Desenvolvimento de Novo Revestimento Metálico para Aços de Alta Resistência Destinados à Conformação a Quente Estudo de P&D em desenvolvimento - Centro de Tecnologia Usiminas - Unidade Ipatinga Henrique acerda Eleutério

18 UFF Volta Redonda RJ Research staff: Prof. André uiz V. da Costa e Silva Prof Flavio Ferreira Research areas: Steelmaking process modeling: refractory slag -metal interactions. Non-metallic inclusion formation in steel. Microstructural evolution in steels. Galvanizing and other zinc coating processes. Highlights Computational Thermodynamics Course at some Brazilian Industries and Universities Industry interaction for teaching, on-site learning,motivation of students.

19 ArcelorMittal Inox 2010 Award for Best Stainless Steel paper in 2009 EVAUATION OF THE PRECIPITATION KINETICS OF INTERMETAIC COMPOUNDS IN DUPEX STAINESS STEES BY MATHEMATICA DIFFUSION MODEING André uiz V. da Costa e Silva Roberto Ribeiro de Avillez 2009 ABM Conference

20 UFF Publications -examples Costa e Silva, A ; MEI, P R. Aços e igas Especiais. 3. ed. São Paulo: Editora Blucher tda., v p. B N STOCO ; MARTINS, Antônio Augusto de Rezende ; COSTA E SIVA, A.. ESTIMATIVA DE VISCOSIDADE EM ESCÓRIAS: APICAÇÃO NO SISTEMA CaO-Al2O3-MgO-SiO2. In: 65 Congresso ABM Internacional, 2010, Rio de Janeiro. Anais do 65 Congresso ABM Internacional. São Paulo : ABM, p MURARI, F. D. ; COSTA E SIVA, A. ; AVIEZ, Roberto Ribeiro de. ESTUDO DA FORMAÇÃO DA AUSTENITA EM AÇOS MUTIFÁSICOS. In: 65 Congresso ABM Internacional, 2010, Rio de Janeiro. Anais do 65 Congresso ABM Internacional. São Paulo : ABM, p MAGAHAES, H.. G. ; COSTA E SIVA, A. ; C A da Silva ; SIVA, I. A. ; TORRES, A.. ESTUDO TEÓRICO E EXPERIMENTA DE FATORES QUE AFETAM A IMPIDEZ INCUSIONÁRIA DE UM AÇO SAE In: 65 Congresso ABM Internacional, 2010, Rio de Janeiro. Anais do 65 Congresso ABM Internacional. São Paulo : ABM, p DIAS, F. M. S. ; COSTA E SIVA, A. ; FONSECA, F. A. V. ; CAMPOS, M. F.. CONTRIBUIÇÃO AO DESENVOVIMENTO DO AÇO IF GAVANIZADO, DA CASSE EDDQ, COM TEOR DE CARBONO SUPER UTRA BAIXO E ESTABIIZADO AO TITÂNIO. In: 65 Congresso ABM Internacional, 2010, Rio de Janeiro. Anais do 65 Congresso ABM Internacional. São Paulo : ABM, p B N STOCO ; COSTA E SIVA, A.. Estimating viscosities in steelmaking slags with basis on a thermodynamic model- Applications in the CaO-Al2O3-MgO-SiO2 system. In: XXXIX CAPHAD, 2010, Jeju, Coreia do Sul. XXXIX CAPHAD Program and Abstracts, p AVIEZ, Roberto Ribeiro de ; COSTA E SIVA, A. ; FORTES, R. A. F. O.. Thermodynamic studies of steelmaking slags with respect to foaming in Electric Arc Furnace. In: XXXIX CAPHAD, 2010, Jeju, Coreia do Sul. XXXIX CAPHAD Program and Abstracts, p Carvalho, R.N. ; IMA, M. M. ; OEA, C. A. W. ; SIVA, R. R. ; FERREIRA, M. A. C. ; COSTA E SIVA, A.. Thermodynamic evaluation of the effects of segregation on phase transformation of 13Cr supermartensitic stainless steels. In: XXXIX CAPHAD, 2010, Jeju, Coreia do Sul. XXXIX CAPHAD Program and Abstracts, p COSTA E SIVA, A.. COMPUTATIONA THERMODYNAMICS IN STEEMAKING AND PROCESSING HOW USEFU IS EQUIIBRIUM INFORMATION?. In: 1st TMS/ABM International Materials Congress - Invited speaker, 2010, Rio de Janeiro. Anals of the 1st International Materials Congress. São Paulo : ABM, p

21 Villares Metals SA Sumaré SP Specialty Steels and Alloys R&D New alloys, alloy and process development. Researchers Celso Antonio Barbosa- R&D Technology R&D Manager Alexandre Bellegard Farina, MsC José Britti Bacalhau, MSc Alexandre Sokolowski, MSc Eduardo Netto de Souza, PhD Roberto Tibúrcio Frota, MSc Mario Mantovani, PhD 21

22 Specialty Alloys- Alloy design Researcher : Alexandre Bellegard Farina, MSc Development of a wear resistant valve alloy containing hard particles: Wear and sulphuric acid corrosion resistant alloy with equivalent hot resistance of actual Ni Base Alloys designated to high performance exhaust or intake valves for diesel engines to cope with Euro 5 Exhaust Emission imits. Publication: Patent filled and to be published at Superalloys Development of a low nickel valve alloy: Hot oxidation and sulphuric acid corrosion resistant alloy with equivalent hot resistance of Ni Base Alloys designated to high performance valves for diesel engines to cope with Euro 5 Exhaust Emission imits. Publication: Patent filled and to be published at Superalloys

23 High speed Steels and Tool Steels Researcher: José Britti Bacalhau, MsC New precipitation model in H11 too steel: showing the influence of silicon on secondary carbide precipitation sequence and the effects on mechanical properties Publication: ABM Congress, 2008, Tooling 2009 (Aachen) and PTM 2010 Congress (Avignon). Discussion on Hardening variables for high speed steel M2 by means of bend toughness and microstructure evaluations, concerning: hardening temperature, quenching rate and diverse hardening/tempering possibilities for lower hardness applications. Publication: Italy Innovation Heat Treating Conference, Development of a new bainitic direct hardening tool steel: for application in big plastic injection moulds, using principles of microalloying technology. Publication: Patent filled, being presented to costumers and publications being planned. 23

24 Stainless Steels alloy design Researcher: Alexandre Sokolowski, MSc : Development of a New Families of Stainless Stees: Thermo-Calc helped in alloy design of better compositions of Supermartensitic 13%Cr stainless steels used in the Off Shore Oil industry showing the effects of different Nb/V relationships in the residual ferrite content as well as the best rolling temperatures. In the development of lean duplex stainless steels we designed news compositions using the alpha/gamma predictions for different alloys compositions. The prototype alloys were produced successfully according the Thermo-Calc predictions. Development of UNS S superduplex stainless steel produced in large diameter rolled bars according NORSOK standard. ThermoCalc helped to chose compositions and processing parameters that minimize intermetallics and nitrides precipitation during forging operations. Publication at INOX th Brazilian Stainless Steel Conference (2010). 24

25 Solidification Researcher: Eduardo Netto de Souza, PhD: Solidification: Simulations of the solidification process were implemented in the last year bringing the necessity of having the correct database in the pre-processor mode. Thermo-Calc was used to perform the thermodynamic calculation for multi-component systems as thermo physical properties. The materials properties of the liquid, solid and mushy zone are critical factors in casting simulations. The properties, as a function a temperature, include the enthalpy profile, solid or liquid fraction formation during the process, specific heat and density for multicomponents alloys. 25

26 Inclusion control Researcher: Mario Mantovani, PhD Clean Steel: In order to produce valve steels with high cleanliness we conducted a research in the last two years using thermodynamics information, especially concerning the interaction between liquid steel and refractories used in continuous casting billet machine. As result of this study we could develop a better understanding of the interaction mechanism between MgO tundish lining concretes and the steel. Publication: The study is reported in the paper published in CFI- Ceramic Forum Int., Publication: ABM Congress,

27 Thermomechanical Simulations Researcher: Roberto Tibúrcio Frota, MSc: Thermomechanical Processing of Ni Base Alloys: Numerical simulations of rolling process of Ni Base alloys, like Nimonic an Inconel alloys, using the finite element method implemented in the commercial code Deform, together of new deformation data determined from flow stress in physical simulations using torsion tests, allowed us to formulate the conditions in order to control the grain size after rolling. Publication: ABM Congress, 2008 Open Die Forging Process Simulation: In order producing forged parts with increasingly internal quality, especially to the energy industry, we succeed in apply the finite element method implemented in the commercial code Deform, assessing process parameters like die geometries, forging technique and operation sequence. Publication: ABM Congress,

28 USP São Paulo Research staff: Prof. Hélio Goldenstein Alexandre Farina (PhD student, Villares Metals S/A) Main activities: Magnetic materials Co-Sm Publication at X CAPHAD in cooperation with UFF Oxides (Al-Mn-Ti-O) Publications (CAPHAD 2010 and CAPHAD 2011) Precipitation during aging heat treatment of in Inconel 718 Publication at X CAPHAD in cooperation with UFF Precipitates in 12%Cr stainless steels. Modelling of the thermodynamics and kinetics of austenite eutectoid decomposition. 28

29 USP Publications- Highlights Braga, A. P. Estudo do Sistema Al-C-Ni visando o aprimoramento do banco de dados NICRAC para o sistema Al-C-Cr-Ni. Trabalho de Formatura. EPUSP, São Paulo, 78p, Farina, A. B, et al. NICRAC - Family of As-Cast High Temperature Wear Resistant Alloys Based on Ni3Al Intermetallic Compound. Anais do XVII Congresso Brasileiro de Engenharia e Ciência dos Materiais - CBECIMAT. Foz de Iguaçu - PR, Farina, A. B, Beneduce, F et Campos, M. F. Modelamento termodinâmico do sistema binário Co-Sm. Anais do 61 Congresso Anual da ABM. 2006, pp : A. B. Farina, C. Tassin, B. Chehab, M. Véron, Y. Bréchet, J.D. Mithieux, J.C. Glez Using Calphad to understand the thermodynamics and kinetic aspects of microstructure evolution during processing of a Ferritic 11wt% Cr stainless steel. XXXVII CAPHAD Congress, Finland, Farina, A. B.; Oliveira, T. R; Goldenstein, H. Caracterização da seqüência de transformações de fases do aço inoxidável AISI 430. Presented at 2009 ABM Conference. Farina, A. B.; Caracterização da seqüência de transformações de fases do aço inoxidável AISI 430. Thesis. USP, São Paulo,

30 PUC-Rio de Janeiro RJ Research staff: Prof. Fernando Cosme Rizzo Assunção Prof. Roberto Ribeiro de Avillez Research areas: Thermodynamics of steel processing (TECOMAT, oxides) Steel coatings (Galvanizing and other zinc coating processes). High temperature corrosion. Microstructural evolution in steels (Q&P process). Nanostructured oxide synthesis. Negative thermal expansion coefficient materials. Highlights Prof Rizzo: Director of CGEE (Centro de Gestão de Estudos Estratégicos - Center for Strategic Management and Studies Prof Avillez coordinates TECOMAT project

31 PUC Prof Rizzo Q&P (Quenching & Partitioning) steels: Computational thermodynamics (Thermo-calc and DICTRA) in use to understand the complex microstructure of these steels.

32 USP- CVM Research staff Cláudio G. Schön (coordenador) Helana M. Petrilli and Pablo Guillermo Gonzales-Ormeño (senior researchers) Bruno Geoffroy Scuracchio and Ney Sodré (researchers). Visiting researchers and collaboration Prof. Dr. Tanusri Saha-Dasgupta (S.N.Bose National Centre for Basic Sciences, Kolkata, India) Prof. Dr. Alex Zunger (National Renewable Energy aboratory,golden,colorado USA) Prof. Dr. Gary S. Collin (Washington State University, Pullman-WA, USA). Main areas of research Ab initio calculation of phase diagrams (CVM - FP-APW), Application of computational thermodynamics to steel processing. Fe-Mo-Al (ab initio) Fe-Rh-Ti (CVM assessment) Fe-Cr-C (industrial application) Main publication in 2007 EENO,. T. F. ; BAUN, J. ; INDEN, G. ; SCHON, Claudio Geraldo. Phase equilibria in the Fe-Rh-Ti system II. CVM Calculations. Intermetallics (Barking), v. 15, p , 2007

33 USP Schön group SCHON, C. G. ; INDEN, G.. Thermodynamic self-consistency issues related to the Cluster Variation Method: the case of the BCC Cr-Fe (chromium - iron) system. In: CAPHAD XXXVII, 2008, Saariselkä/Finlândia. CAPHAD XXXVII. Helsinki, Finlândia : Helsinki Institute of Technology, p ORMEÑO, P. G. G. ; SODRE, N. ; PETRII, H. M. ; SCHON, C. G.. Ab-initio calculation of the BCC Fe-M (M = Ti, V, Nb, Mo) phase diagrams in the irregular tetrahedron approximation. In: CAPHAD XXXVII, 2008, Saariselkä/Finlândia. CAPHAD XXXVII. Helsinki, Finlândia : Helsinki Institute of Technology, p MIYAZAKI, T. ; KOZAKAI, T. ; SCHON, C. G.. Verification of the GibbsThompson s relation by utilizing Macroscopic Composition Gradient in Alloys. In: CAPHAD XXXVII, 2008, Saariselkä/Finlândia. CAPHAD XXXVII. Helsinki, Finlândia : Helsinki Institute of Technology, p SODRE, N. ; ORMEÑO, P. G. G. ; SCHON, C. G. ; PETRII, H. M.. Ab-initio calculation of the BCC Fe-Mo phase diagram:basic assumptions and comparisson with experimental assessments. In: Discussion Meeting on Thermodynamics of Alloys - TOFA2008, 2008, Cracóvia/ Polônia. Book of Abstracts and Program. Cracóvia/ Polônia : Institute of Metallurgy and Materials Science/ Polish Academy of Sciences, p ORMEÑO, P. G. G. ; SODRE, N. ; PETRII, H. M. ; SCHON, C. G.. Ab-initio calculation of the BCC Fe-Mo-Al phase diagram: implications for the nature of the tau_2 phase. In: Discussion Meeting on Thermodynamics of Alloys - TOFA2008, 2008, Cracóvia/ Polônia. Book of Abstracts and Program. Cracóvia/ Polônia : Institute of Metallurgy and Materials Science/ Polish Academy of Sciences, p

34 EE-USP ( formerly FAENQUI)- orena, SP Researchers: Prof. Carlos A. Nunes Prof. Gilberto C. Coelho Prof Paulo Suzuki FAENQUI is EE-USP since 2006 Organizing Workshops orena: with Bo Sundman, Su Fries, A Costa e Silva, RR Avillez

35 EE-USP (formerly FAENQUI)- orena, SP Research Themes: Experimental Studies on Phase Stability in the Metal-rich Corner of the Me Si B Systems. Thermodynamic Optimization of Me Si B Systems. CAPHAD Method Applied to Materials Science. Superalloys: phase transformation, investment casting, mechanical properties

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