CAJ | 학술논문

通过电子背散射衍射实验分析方法，研究变形量和热老化因素对双相不锈钢的拉伸性能、相边界、局部应变分布、重位点阵特殊晶界和取向分布的影响。研究结果表明：热老化后，双相不锈钢的强度提高，韧性降低；在大变形条件下铁素体晶粒内小角度晶界的数量和密度略有增加；热老化材料的铁素体的塑性变形和局部应变能力下降，大变形破坏初始奥氏体和铁素体以及∑3孪晶边界的分布。
통과전자배산사연사실험분석방법，연구변형량화열노화인소대쌍상불수강적랍신성능、상변계、국부응변분포、중위점진특수정계화취향분포적영향。연구결과표명：열노화후，쌍상불수강적강도제고，인성강저；재대변형조건하철소체정립내소각도정계적수량화밀도략유증가；열노화재료적철소체적소성변형화국부응변능력하강，대변형파배초시오씨체화철소체이급∑3련정변계적분포。
The effects of deformation degree and thermal aging on the tensile properties, phase boundaries, local strain distribu-tion, coincidence site lattice ( CSL) boundaries and orientation distribution of duplex stainless steels were investigated by electron backscattered diffraction ( EBSD) . It is found that after thermal aging, the strength of duplex stainless steels enhances and the ductili-ty decreases. The number and density of small-angle boundaries in ferrite grains increase slightly under large deformation conditions. The plastic deformation ability and local strain in ferrite phases of the thermal aged materials decline. Large deformation destroys the original distribution of austenite and ferrite grains, as well as ∑3 twinning boundaries.