With JMatPro the influence of changing chemical compositions, e.g. JMatPro user interface showing the different Material Types (left) and the calculation modules for General Steel. This basis was extended by comprehensive new subroutines which provide a variety of benefits, including setting automatic start points, checking for miscibility gaps, finding phase boundaries. JMatPro utilises core minimisation routines developed for the PMLFKT software programme by Lukas et al. Thermodynamic calculations are a basis for the calculation of materials properties. Each module is pre-configured with certain preference settings so that the end-user can select only the relevant options for calculation of data. Phase transformations, e.g.: TTT/CCT/TTA diagrams, Jominy diagrams JMatPro has different modules for each material group.
tensile strength, hardness, flow curves Thermo-physical and physical properties, e.g: Young s (E), Shear (G) and Bulk (K) moduli, Poisson s ratio, Thermal conductivity, Thermal expansion coefficient, Density, Specific heat. Scheil calculations Mechanical properties, e.g. The following properties are calculated by JMatPro: Stable and metastable phase equilibria Solidification behaviour and properties, e.h. It offers: ease of use due to an intuitive user interfaceĢ fast and robust calculations, sound models for predictions of materials properties data management interface in order to browse through calculated properties. JMatPro has been designed so that it can be used by any engineer or scientist that requires materials properties as part of their everyday work. The initial commercial release of JMatPro was available 2002, current release of JMatPro is V.6.2. The CALPHAD-book can be seen as a starting point and scientific foundation of the system. JMatPro started in 1998 as a project funded by a consortium of companies and institutions interested in expanding their materials properties modelling capacity. for the prediction of a broad range of materials properties. 2.1 Introduction to JMatPro The software tool JMatPro, which is an acronym for Java-based Materials Properties software, is a suite of computer programs that has been developed by Thermotech Ltd. mechanical properties, thermo-physical properties. JMatPro is a tool which bridges the gap in translating this information into the materials properties being targeted by the CAE-user, e.g. CALCULATION OF MATERIALS PROPERTIES Thermodynamic modeling tools for exploring the equilibrium and phase relationships in complex materials have become increasingly used in actual industrial practice especially for materials engineers. Missing data have to be calculated by appropriate tools - JMatPro was designed for this. For cost and time reasons it is practically not possible to get this information from tests or databases. For detailed modeling of processes and development of new materials it is necessary to get consistent materials data, which also take into account the variations of chemical composition and different processing routes. An example is the new StahlDat SX database for steels which was developed by Metatech using the Granta-MI standard software for this purpose. Materials databases which compile information from standards or tests have been developed since many years and can now give excellent general information to the end-user. In virtual product development environment, design and simulation engineers perform detailed modeling of the performance and service life of components and assembled products. INTRODUCTION Materials impact cost, safety, quality, and performance. Keywords: Calphad, StahlDat SX, JMatPro, Materials Property Data, CCT, TTT, Flow curves 1. Calculation of materials properties extends the knowledge which is available in leading steel databases, like StahlDat SX of the German Steel Institute. in steel-industry and also for generation of materials property data for FE-simulation, like casting-, forming- and heat-treatment simulation. JMatPro is a commercial software package which is based on CalPhaD and extended by various models which allow calculation of materials properties. 1 CALCULATION OF STEEL DATA USING JMATPRO Uwe Diekmann Metatech GmbH, Kamen, Germany Abstract In order to find the optimum balance of product performance, alloying and heat treatment costs the calculation of materials properties of steels as a function of chemical composition and processing can be helpful.
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