Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7174909 | International Journal of Plasticity | 2016 | 65 Pages |
Abstract
The crystal plasticity finite element method (CPFEM) was applied to determine the influence that the kinematic stability of the austenite (γ) phase exerts on the phase-transformation behavior and deformation heterogeneity of duplex stainless steel (DSS) polycrystalline materials showing γ to martensite (αâ²) transformation during uniaxial tension. A phase-transformation model was implemented in the CPFEM to consider the effect of transformation-induced plasticity (TRIP) on micromechanical behaviors in DSS. The individual flow curves of the ferrite (α), γ and αⲠphases in DSS were determined via in-situ neutron diffraction in combination with the CPFEM. The effect of the kinematic stability of the γ phase on phase-transformation behavior and deformation heterogeneity in DSS during uniaxial tension was demonstrated using the CPFEM based on the representative volume elements (RVEs) of a unit cell for DSS.
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Authors
Eun-Young Kim, WanChuck Woo, Yoon-Uk Heo, BaekSeok Seong, JeomYong Choi, Shi-Hoon Choi,