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The Ringberg Workshop 1996 on solution modelling
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Calphad Vol. 21, NO. 2, pp. 139-141, 1997 (9 1997 Published by Elsevier Science Ltd Printed in Great Britain. All rights reserved 0364-5916197 $17.00 + 0.00
Pergamon
PII SO364-5916(97)
00018-7
The Ringberg Workshop 1996 on Solution Modelling
organized by Bo Sundman’, Hans-Jiirgen Seifert and Fritz Aldinger Max-Planck-Institut fiir Metallforschung D 70569 Stuttgart, Germany
Phases with a significant range of composition appear in alloys, ceramics, semiconductor materials etc. In order to describe the thermodynamic properties for such composition ranges one needs a model which describes how the Gibbs energy varies with composition. The development of such models has been intensive for the last 20 years when computer software started to be used for equilibrium and phase diagram calculations. In order to review the current state of modelling and to make recommendations or even propose new models a six-day workshop was arranged for invited experts with a background in physics, chemistry, metallurgy, geology and computer software at the Ringberg castle, a meeting place of the Max-Planck-Gesellschaft. The workshop was organized in small working-groups dealing with models for liquids, alloys, order-disorder transitions, semiconductor materials and oxides. There were five groups each consisting of seven to eight participants with a group leader and an assistant. Each group completed its activity in a report which is presented separately together with an introductory lecture given at the workshop by Mats Hillert. The groups had access to workstations connected to the Internet for testing models, programming and transfer of data and exchange the results with the other groups. Two invited plenary lectures were held every day. The participants circulated between the groups in order to have a direct interaction of ideas, findings and presentation of their results. The group leaders ensured that the discussions remained constructive and that notes were taken. The assistants provided an excellent service of calculations and documentation. The final reports are the result of the work during the week. The reports from the groups provide excellent material for understanding thermodynamic modelling and cover a wide spectrum of approaches. The organizers of the meeting wish to convey their deepest thanks to all who made this conference as memorable as the first.
’ on leave from Department of Materials Science and Engineering, Royal Institute of Technology (KTH), Stockholm, Sweden.
140
B. SUNDMAN
et al.
List of Participants
Fritz Aldinger Tim Anderson Ibrahim Ansara Milton Blander Benjamin Burton Gabriele Cacciamani Austin Chang Tim Chart Qing Chen Maria Teresa Clavaguera-Mora Sergei Degterov Didier de Fontaine Peter Franke
Max Planck Institute, Stuttgart, Germany University of Florida, Gainesville, USA LTPCM, INPG, Grenoble, France Argonne, USA NIST, Gaithersburg, USA University of Genova, Genova, Italy University of Wisconsin, Madison, USA Chart Associates, England KTH, Stockholm, Sweden University of Barcelona, Barcelona, Spain Ecole Polytechnique, Montreal, Canada University of California, Berkeley, USA Max Planck Institut fur Eisenforschung, Dusseldorf, Germany LTH, RWTH, Aachen, Germany Suzana G. Fries KTH, Stockholm, Sweden Goran Grimvall University of Bariloche, Bariloche, Armando Femandez Guillermet Argentina UMIST, Manchester, England Fred Hayes KTH, Stockholm, Sweden Mats Hillert University of Cincinnati, Cincinnati, USA Michael Hoch KTH, Stockholm, Sweden Lars Hoglund Max Planck Institut fur Eisenforschung, Gerhard Inden Dusseldorf, Germany NIST, Gaithersburg, USA Ursula Kattner Larry Kaufman Cambridge Technology Center, Boston, USA K.C. Hari Kumar University of Leuven, Leuven, Belgium Armin Kussmaul Max Planck Institute, Stuttgart, Germany Ecole de Pharmacie, Paris, France Bernard Legendre Max Planck Institute, Stuttgart, Germany H Leo Lukas Peter Miodownik University of Surrey, Guildford, England Alan Oates Jiilich, Germany Tohoku University, Sendai, Japan Hiroshi Ohtani Ecole Polytechnique, Montreal, Canada Arthur Pelton University of Oxford, England David Pettifor University of Texas, Austin, USA Juan Sanchez Nigel Saunders ThermoTech Ltd, Guildford, England Surendra K. Saxena Uppsala University, Uppsala, Sweden Michael Schalin KTH, Stockholm, Sweden Hermann Schier Max Planck Institute, Stuttgart, Germany
RINGBERG
Rainer S&mid-Fetzer H Seifert Christophe Sigli Philip Spencer Bo Sundman Jutta Weber-Bock Kejun Zeng
WORKSHOP
1996
141
TU Clausthal, Clausthal, Germany Max Planck Institute, Stuttgart, Germany Pechiney, Voreppe, France LTH, RWTH, Aachen, Germany KTH, Stockholm, Sweden Max Planck Institute, Stuttgart, Germany TU Clausthal, Clausthal, Germany
Acknowledgement The initial idea and a substantial part of the funding for the workshop came from the Scientific Group Thermodata Europe (SGTE). Additional funding came form DFG, MPG, Ernst-Rudolf-Schl6ssmannStiftung and KTH. Dr. Herman Schier made a fantastic job supervising the installation of the network and handling the computers. All other practical problems were handled with skill and care by Jutta Weber-Bock.
Calphad Vol. 21, NO. 2, pp. 139-141, 1997 (9 1997 Published by Elsevier Science Ltd Printed in Great Britain. All rights reserved 0364-5916197 $17.00 + 0.00
Pergamon
PII SO364-5916(97)
00018-7
The Ringberg Workshop 1996 on Solution Modelling
organized by Bo Sundman’, Hans-Jiirgen Seifert and Fritz Aldinger Max-Planck-Institut fiir Metallforschung D 70569 Stuttgart, Germany
Phases with a significant range of composition appear in alloys, ceramics, semiconductor materials etc. In order to describe the thermodynamic properties for such composition ranges one needs a model which describes how the Gibbs energy varies with composition. The development of such models has been intensive for the last 20 years when computer software started to be used for equilibrium and phase diagram calculations. In order to review the current state of modelling and to make recommendations or even propose new models a six-day workshop was arranged for invited experts with a background in physics, chemistry, metallurgy, geology and computer software at the Ringberg castle, a meeting place of the Max-Planck-Gesellschaft. The workshop was organized in small working-groups dealing with models for liquids, alloys, order-disorder transitions, semiconductor materials and oxides. There were five groups each consisting of seven to eight participants with a group leader and an assistant. Each group completed its activity in a report which is presented separately together with an introductory lecture given at the workshop by Mats Hillert. The groups had access to workstations connected to the Internet for testing models, programming and transfer of data and exchange the results with the other groups. Two invited plenary lectures were held every day. The participants circulated between the groups in order to have a direct interaction of ideas, findings and presentation of their results. The group leaders ensured that the discussions remained constructive and that notes were taken. The assistants provided an excellent service of calculations and documentation. The final reports are the result of the work during the week. The reports from the groups provide excellent material for understanding thermodynamic modelling and cover a wide spectrum of approaches. The organizers of the meeting wish to convey their deepest thanks to all who made this conference as memorable as the first.
’ on leave from Department of Materials Science and Engineering, Royal Institute of Technology (KTH), Stockholm, Sweden.
140
B. SUNDMAN
et al.
List of Participants
Fritz Aldinger Tim Anderson Ibrahim Ansara Milton Blander Benjamin Burton Gabriele Cacciamani Austin Chang Tim Chart Qing Chen Maria Teresa Clavaguera-Mora Sergei Degterov Didier de Fontaine Peter Franke
Max Planck Institute, Stuttgart, Germany University of Florida, Gainesville, USA LTPCM, INPG, Grenoble, France Argonne, USA NIST, Gaithersburg, USA University of Genova, Genova, Italy University of Wisconsin, Madison, USA Chart Associates, England KTH, Stockholm, Sweden University of Barcelona, Barcelona, Spain Ecole Polytechnique, Montreal, Canada University of California, Berkeley, USA Max Planck Institut fur Eisenforschung, Dusseldorf, Germany LTH, RWTH, Aachen, Germany Suzana G. Fries KTH, Stockholm, Sweden Goran Grimvall University of Bariloche, Bariloche, Armando Femandez Guillermet Argentina UMIST, Manchester, England Fred Hayes KTH, Stockholm, Sweden Mats Hillert University of Cincinnati, Cincinnati, USA Michael Hoch KTH, Stockholm, Sweden Lars Hoglund Max Planck Institut fur Eisenforschung, Gerhard Inden Dusseldorf, Germany NIST, Gaithersburg, USA Ursula Kattner Larry Kaufman Cambridge Technology Center, Boston, USA K.C. Hari Kumar University of Leuven, Leuven, Belgium Armin Kussmaul Max Planck Institute, Stuttgart, Germany Ecole de Pharmacie, Paris, France Bernard Legendre Max Planck Institute, Stuttgart, Germany H Leo Lukas Peter Miodownik University of Surrey, Guildford, England Alan Oates Jiilich, Germany Tohoku University, Sendai, Japan Hiroshi Ohtani Ecole Polytechnique, Montreal, Canada Arthur Pelton University of Oxford, England David Pettifor University of Texas, Austin, USA Juan Sanchez Nigel Saunders ThermoTech Ltd, Guildford, England Surendra K. Saxena Uppsala University, Uppsala, Sweden Michael Schalin KTH, Stockholm, Sweden Hermann Schier Max Planck Institute, Stuttgart, Germany
RINGBERG
Rainer S&mid-Fetzer H Seifert Christophe Sigli Philip Spencer Bo Sundman Jutta Weber-Bock Kejun Zeng
WORKSHOP
1996
141
TU Clausthal, Clausthal, Germany Max Planck Institute, Stuttgart, Germany Pechiney, Voreppe, France LTH, RWTH, Aachen, Germany KTH, Stockholm, Sweden Max Planck Institute, Stuttgart, Germany TU Clausthal, Clausthal, Germany
Acknowledgement The initial idea and a substantial part of the funding for the workshop came from the Scientific Group Thermodata Europe (SGTE). Additional funding came form DFG, MPG, Ernst-Rudolf-Schl6ssmannStiftung and KTH. Dr. Herman Schier made a fantastic job supervising the installation of the network and handling the computers. All other practical problems were handled with skill and care by Jutta Weber-Bock.