An in situ high-energy X-ray diffraction study of micromechanical behavior of multiple phases in advanced high-strength steels
作者： N. Jia , Z.H. Cong , X. Sun , S. Cheng , Z.H. Nie
DOI: 10.1016/J.ACTAMAT.2009.05.002
关键词:
摘要: The micromechanical behavior of high-strength steels with multiple phases was characterized using the in situ high-energy X-ray diffraction technique. For materials investigated, {2 0 0} lattice strains constituent (ferrite, bainite and martensite) similar crystal structures were determined by separating their overlapped peaks then examining respective changes peak positions during deformation. Based on those experimental data, anisotropic elastic plastic properties simulated a self-consistent model for predicting grain-to-grain phase-to-phase interactions. constitutive laws describing each phase directly obtained comparing predicted strain distributions measured ones. transmission electron microscopy observations microstructure development verified partitioning among different phases. present investigations provide fundamental understanding stress soft hard phases, work-hardening rates multiphase steels.
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