In situ neutron diffraction and crystal plasticity analysis on Q & P1180 steel during plastic deformation

被引：13
作者：
Yang, Hao [1 ]
Wang, Huamiao [1 ]
Yang, Zhaolong [2 ,3 ]
Huang, Yalin [2 ,3 ]
Li, Dayong [1 ,4 ]
Peng, Yinghong [1 ]
Wu, Peidong [5 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China
[2] China Acad Engn Phys, Key Lab Neutron Phys, Mianyang 621999, Sichuan, Peoples R China
[3] China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621999, Sichuan, Peoples R China
[4] Shanghai Jiao Tong Univ, Mat Genome Initiat Ctr, Shanghai 200240, Peoples R China
[5] McMaster Univ, Dept Mech Engn, Hamilton, ON L8S 4G7, Canada
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2021年 / 802卷
基金：
加拿大自然科学与工程研究理事会; 中国国家自然科学基金;
关键词：
Quenching and partitioning steels; Neutron diffraction; Crystal plasticity; Phase transformation; Texture; Lattice strain; X-RAY-DIFFRACTION; PHASE-TRANSFORMATION; DISLOCATION DENSITY; RETAINED AUSTENITE; MICROMECHANICAL BEHAVIOR; MECHANICAL-BEHAVIOR; STAINLESS-STEEL; HEAT-TREATMENT; MARTENSITE; STABILITY;
D O I：
10.1016/j.msea.2020.140425
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Q&P1180 is a typical third generation of advanced high strength steel. In this paper, the microstructure evolution of the Q&P1180 steel during uniaxial tension is investigated comprehensively by using in situ neutron diffraction technique, electron backscatter diffraction (EBSD), scanning electron microscope (SEM) and the elastic-viscoplastic self-consistent with phase transformation (EVPSC-PT) model. Tempered martensite (TM) is determined as the matrix based on SEM and EBSD analysis. Tiny blocky retained austenite (RA) islands are distributed in the matrix, and transformed into martensite during deformation. Effects of phase transformation on the stress-strain response, lattice strains, diffraction intensities and texture evolution of the Q&P1180 are discussed based on experiments and the EVPSC-PT model. The progressive phase transformation from austenite to martensite is orientation-dependent, and the gamma{200} orientation has the lowest stability, followed by gamma{220} and gamma{311} orientations. The flow stress of each phase with straining shows that the strength of RA in Q&P1180 is higher than that of TM, due to its high carbon content.
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页数：15
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