![]() ![]() ![]() In a hypereutectoid composition (greater than 0.8% carbon), the carbon will first precipitate out as large inclusions of cementite at the austenite grain boundaries until the percentage of carbon in the grains has decreased to the eutectoid composition (0.8% carbon), at which point the pearlite structure forms. A ferrite phase has a much lower carbon content, and cementite has a much higher carbon concentration. This distinctive microstructure of steel is called pearlite. If steel (austenite) with a eutectoid composition of approximately 0.77% C is slowly cooled below 727 ☌, the ferrite and cementite phase separate almost simultaneously to produce a microstructure with distinctive platelets. It is named for its resemblance to mother of pearl. Fixed cooling rate reported as 0.In metallurgy, pearlite is a layered metallic structure of two-phases, which compose of alternating layers of ferrite (87.5 wt%) and cementite (12.5 wt%) that occurs in some steels and cast irons.Fixed a bug related to decreasing particle size in Ni Heat Treatment.Fixed a bug preventing the export of picture for Flow Stress Analysis.Improved plot of Ni micro-structure evolution during heat treatment.Prevented double question when overwriting files.Improved accuracy of Ferrite in TTT calculation for export purposes.Fixed HEATING part and possible negative numbers in Sysweld export.Fixed a confusing label when showing normalised element amounts in phases.Fixed clipped picture in fatigue tool plot.Fixed a bug which prevented loading of user defined material types.Fixed a bug in the the calculation of Gamma" size for 2 steps ageing.OTHER Numerous improvements in models and user interface #Jmatpro 9 software#Addition of more export options mode for Transvalor software for General steels (Physical/mechanical properties - flow stress curves - TTT/CCT - reaustenitisation).Addition of enthalpy if required to Sysweld export.Addition of electrical resistivity to Simufact export.Adjustments to molar volume for high-Cr steels.Adjustments to molar volumes for TiZrSi Ti5Si3 and TiMB2 phases in Ti alloys.Adjustments to Al, Mg, Fe, Co, Ni, Ti and Cu thermodynamic databases.Allowed display of Md (martensite deformation)>0K even if MsImproved model for the calculation of Antiphase Boundary Energy calculation with temperature dependence for Ni alloys.Addition of the option of user input room temperature strength for High Temperature Strength calculation for Ti alloys and Stainless Steels.Addition of BrinellVickers hardness conversion for Al alloys.Export of data for third party forming simulation packages for Al alloys.Addition of stress-strain curves and flow stress analysis calculations for Al alloys.Addition of O,F and H heat treatments in the calculation of high temperature mechanical properties for Al alloys.Calculation of stiffness coefficients and modulus anisotropy in Single Crystals.Improvement of the Martensite transition temperature calculation for maraging steels.Addition of user calibration of TTT/CCT diagrams for General Steels allowing users to match their experimental data and make further calculations thereafter.Improvement of strain hardening calculation in Fe alloys.Addition of rolling force calculation in Multi-Pass Hot Rolling calculation for General Steels.Improvement of Tempered Hardness calculation for General Steels.Improvement of precipitation kinetics in Simultaneous Precipitation calculation for General Steels.Addition of strength/hardness calculation in Simultaneous Precipitation calculation for General Steels.Improvement of homogenisation calculation with consideration of back diffusion and dendrite geometries for Al, Mg, Co, Ni, Ti and Zr alloys.Addition of back-diffusion calculation and cooling rate dependence in solidification properties for Al, Mg, Co, Ni, Ti and Zr alloys. ![]()
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