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Thermochemical database for light metal alloys (Volume 2) PDF

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COST European cooperation in the field of scientific European Commission and technical research COST 507 Definition of thermochemical and thermophysical properties to provide a database for the development of new light alloys Thermochemical database for light metal alloys Volume 2 EUR 18499 EN EUROPEAN COMMISSION Edith CRESSON, Member of the Commission responsible for research, innovation, education, training and youth DG XII/B.1 — RTD actions: Cooperation with non-member countries and international organisations — European Economic Area, COST, Eureka and international organisations Contact: Mr Peter Lobotka Address: European Commission, rue de la Loi 200 (SDME 1/44), B-1049 Brussels — Tel. (32-2) 29-65512; fax (32-2) 29-65925 COST European cooperation in the field of scientific European Commission and technical research COST 507 Definition of thermochemical and thermophysical properties to provide a database for the development of new light alloys Thermochemical database for light metal alloys Volume 2 Edited by Ansara, A. T. Dinsdale, M. H. Rand July 1998 EUR 18499 EN LEGAL NOTICE Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of the following information. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server (http://europa.eu.int). Cataloguing data can be found at the end of this publication. Luxembourg: Office for Official Publications of the European Communities, 1998 Volume 2: ISBN 92-828-3902-8 Volumes 1 to 3: ISBN 92-828-3900-1 © European Communities, 1998 Reproduction is authorised provided the source is acknowledged. Printed in Belgium COST 507 COORDINATION GROUP C Final Report Round 2 July 1998 Partners in Coordination Group C, whose results are presented in the pages of this report, are: Lehrstuhl für Theoretische Hüttenkunde und Metallurgie der Kernbrennstoffe, RWTTI Aachen, Germany Max-Planck-Institut für Mctallforschung, PML, Stuttgart, Germany Laboratoire de Thermodynamique et Physico-Chimie Métallurgiques, INPG - ENSREG, St.Martin - d'Hères, France Istituto di Chimica Generale, Università di Genova, Genova, Italy Senter for Industriforskning, Blindem, Oslo, Norway Division of Physical Metallurgy, Royal Institute of Technology, Stockholm, Sweden Laboratory of Materials Processing and Powder Metallurgy, Helsinki University of Technology, Espoo, Finland Centre for Materials Measurement and Technology, National Physical Laboratory, Teddington, U.K. Institut für Physikalische Chemie, Universität Wien, Austria GTT - Technologies, Herzogenrath, Germany INTRODUCTION The COST-Action 507 has the official title: Measurement and Evaluation of Thermochemical and Thermophysical Properties to Provide a Database for the Development of New Light Alloys There are 14 signatory countries to the Action, which had an official commence­ ment date on January 1, 1990. The countries concerned are: Austria Germany Norway Switzerland Belgium Greece Portugal United Kingdom France Italy Spain Finland Netherlands Sweden In addition, the Baikov Institute of Metallurgy, Moscow (Russia) is taking part in the Action. The work of COST 507 is shared amongst partners in 4 Coordination Groups whose areas of interest are: Coordination Group A : Experimental measurement of thermochemical properties Coordination Group Β : Critical compilation and assessment of constitutional data prior to thermodynamic calculation Coordination Group D : Experimental measurement and compilation of thermophysical data Coordination Group C, whose work is presented in this report, is concerned with the general theme: Critical thermodynamic evaluation of relevant binary, ternary and higher-order alloy systems to produce a set of optimized coefficients for the light metal alloy database. The evaluations of Group C incorporate experimental data from Group A and Group D partners, and use the critically compiled constitution data from Group Β as basis for the evaluation work. Using this computer database, which is now in an impressive state of develop­ ment, it will be possible to calculate the phase equilibria to be expected in complex light alloy systems as a function of a wide range of compositions and temperatures. For example calculation can be made of liquidus and solidus temperatures, crystal­ lization paths for equilibrium and non-equilibrium conditions, nature and amounts of precipitated phases, enthalpy effects associated with phase transformations, etc. The rapid accessibility of such information will considerably assist the design, manufacture and utilization of a wide range of different alloy types. The alloy systems towards which the experimental and evaluation work is being directed, together with some major applications, are listed below: Al-Mg-Mn-Fe-Si : cans Al-Mg-Si-Cu (-Fe) : extrusions, automobiles Al-Zn-Cu-Mg (-Zr,Cr,rare earth metals) : aerospace, transport Al-Li-Cu-Mg-Zr (-II) : airframes Ti-Al-Mo-Zr (Cu,B,C,N,0,Si) : gas turbines Ti-ΑΙ (-V,Cr,Mn,Ni,Fe,Nb), (B,C,N,0,Si) : gas turbines EVALUATION PROCEDURE Bearing in mind the alloy categories defined by industrial partners at the begin­ ning of the Action, a matrix was drawn up to define the binary systems forming the building blocks for the evaluation of higher-order systems. These binaries were then allocated to the different partners in Group C for evaluation. All partners made use of the selected data for the elements published by A.T. Dinsdale ' on behalf of SGTE. There was also agreement amongst partners with respect to the modelling of par­ ticular phases so that consistency could be maintained on proceeding from binary to higher-order systems combining evaluations originating from different laboratories. All results were prepared in exactly the same format to facilitate exchange of data and to provide a standard format for computer storage of the data by the database manager, Dr.Ansara, in Grenoble. Evaluations to produce optimized sets of coefficients were carried out using one or 'A.T. Hinsdale, Calphad, 15, 4, 317-425 (1991).

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thermophysical properties to provide a database for the development of new light alloys. Thermochemical database for light metal alloys. Volume 2.
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