Constitutive Equation of TRIP Steel Based on Continuum Crystal Plasticity and Computational Simulation on Pattern Formation of Martensitic Phase by Finite Element Method with Cellular Automata
Decomposition of Deformation Gradient
![](fdecomp.jpg)
![](f.jpg)
Constitutive equation based on continuum crystal plasticity
![](consteq.jpg)
Asaro's model for transformation strain rate
![](Slips.jpg)
Transformation condition proposed by Kitajima et al.(2002)
![](Transcond.jpg)
Computational model of single crystal TRIP steel and definition of initial orientation of slip system
![](model.jpg)
Stress - strain and volume fraction of martensite - strain curves with different initial orientation of slip system
![](ssfm_periodic.jpg)
Distribution of martensitic phase and equivalent plastic strain in the case of phi = 30 [deg]
![](set30.jpg)
Computational model of polycrystal TRIP steel by Voronoi tessellation
![](modelp.jpg)
Stress - strain and volume fraction of martensite - strain curves with different number of grain
![](ssfm_grains_comp.jpg)
Stress - strain and volume fraction of martensite - strain curves with different initial orientation of slip system in the case of 6 grains
![](ssfm_6grains.jpg)
Distribution of martensitic phase and equivalent plastic strain in the case of 6 grains
![](imtr2_6g.jpg)
![](setr2_6g.jpg)
Distribution of martensitic phase and equivalent plastic strain in the case of 20 grains
![](imtr2_20g.jpg)
![](setr2_20g.jpg)
Go Iwamoto's HP!!