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Modeling Static and Dynamic Kinetics of Microstructure Evolution in Type 316 Stainless Steel
Author(s) -
Dupin Eduardo,
Yanagida Akira,
Yanagimoto Jun
Publication year - 2014
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201300173
Subject(s) - materials science , constitutive equation , microstructure , flow stress , strain rate , deformation (meteorology) , austenite , compression (physics) , finite element method , hyperbolic function , austenitic stainless steel , flow (mathematics) , mechanics , thermodynamics , composite material , metallurgy , mathematical analysis , mathematics , physics , corrosion
The material genome of type 316 austenitic stainless steel is presented. The material genome is a set of constitutive equations which describes the microstructure evolution during hot forming. Single‐ and double‐compression tests at temperatures of 950–1150°C and with strain rates of 0.01–20 s −1 were performed to obtain the kinetics of dynamic and static events. Inverse analysis, which couples a thermomechanical finite element analysis with experimental data, is used to obtain the flow curves. It compensates the effect of inhomogeneous distributions of deformation and temperature during the compression tests. The sine‐hyperbolic law, which relates the flow stress and the Zener–Hollomon parameter, is used to validate the accuracy of the solution. Regression analysis is applied on the coefficients of the flow curves in order to obtain the parameters of the constitutive equations. Microstructure investigations are used to demonstrate the validity of the newly obtained material genome.