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Although JMatPro is very easy to use, the scope for its use and the number of properties calculated is very large. This page lists JMatPro's main features. A separate page is devoted to the available modules. In this page, you will find a selection of screenshots to give you a better idea of what JMatPro looks like and what its capabilities are. To keep the loading time reasonable, a thumbnail picture is shown for each screenshot. To get the full size picture, just click on these thumbnails.
Material types:JMatPro currently handles the following material types:
Input windows:JMatPro has been designed to be very easy to use. There is no abstruse syntax to remember, all input is done within a very intuitive graphical user interface useable by a non-specialist. Our aim was that on discovering JMatPro, without even reading the user's manual it is possible to work efficiently within 10 minutes. From the feedback we get from our customers, this goal has been reached.These are examples of what the user input windows look like:
The material browser:The material browser has been designed for easy filing and retrieval of properties calculations. All available date can be displayed at a glance.
Stable and metastable phase equilibria calculationsAt the core of JMatPro is a robust and fast thermodynamic solver called EQLib. Thermodynamic calculations can be made stepping in temperature or in concentration. EQLib is available as a stand alone package.
Solidification calculationsUsing EQLib, JMatPro's thermodynamic solver, Scheil-Gulliver solidification calculations are readily performed. For steels, the calculation is made with a modification whereby fast C and N diffusion is considered. Among the information provided by the calculation are details on the solid phases formed, partition coefficients, enthalpy, specific heat, latent heat... Furthermore, the calculations are linked to the physical properties module providing:
In the last example, phase details are shown and solidification is mainly to the gamma phase with a very small amount of gamma'. Furthermore, an inversion in the density of the liquid is clearly seen, which can be readily understood by displaying in JMatPro the elemental composition of the phases and seeing how the various important elements partition to the liquid or solid. go to top... Physical and thermo-physical properties of a heat-treated alloyThe physical properties calculations have been substantially enhanced in JMatPro version 2. Physical properties can be calculated over the whole temperature range and include the liquid phase. Calculations can be made (1) by specifying a heat treatment in the solid state or (2) during soldification. Where appropriate, properties are calculated for each phase. This allows properties such as the density of the liquid phase to be extracted and used in fluid flow calculations, differences in expansion coefficients to be calculated for thermal fatigue, gamma/gamma' mismatch to be determined for Ni alloys, etc..JMatPro currently calculates the following properties:
In the last example, the gamma/gamma' mismatch for the AM1 single crystal alloy show 2 regions of behaviour. Below 850C, the gamma/gamma' structure is "frozen in" and cannot change. The mismatch is then governed by the room temperature misfit value and the thermal expansion coefficient of the two phases. As the temperature rises above 850C the calculation allows the amounts and compositions of gamma and gamma' to change to their equilibrium values due to rapid kinetics. This then provides an enhanced rate of change of lattice misfit until at higher temperatures it becomes substantially more negative than at room temperature. The calculations shown in the picture match experiment very closely. go to top... Mechanical PropertiesJMatPro includes:
Notes:
Phase TransformationsJMatPro can calculate various types of phase transformations
Note that in the last shot, the martensite transition changes sharply in the two-phase austenite + ferrite region due to enrichment of C in austenite. Depletion of C due to formation of carbides can also impact on Ms. It is therefore always advisable to make a calculation at the quench temperature to get the true austenite composition. go to top... Pitting corrosionJMatPro includes a module for stainless steels which calculates the Pitting Resistance Equivalent (PRE) value for both austenite and ferrite. Note the sharp drop in PRE below 1000C as formation of Cr2N and sigma depletes the phases of elements such as Cr, Mo and N.
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JMatPro
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