高温低周疲劳下C-HRA-5奥氏体耐热钢中孪晶界演变

周红伟, 高建兵, 沈加明, 赵伟, 白凤梅, 何宜柱

Twin Boundary Evolution Under Low-Cycle Fatigue of C-HRA-5 Austenitic Heat-Resistant Steel at High Temperature

ZHOU Hongwei, GAO Jianbing, SHEN Jiaming, ZHAO Wei, BAI Fengmei, HE Yizhu

图5 700℃低周疲劳下C-5钢和固溶态组织中TBs的EBSD及极图分析

Fig. 5 IPF (a1), BC map (Red lines show the TBs) (a2), KAM map (a3), and the contour lines of low angle grain boundary (LAGB, red lines) and high angle grain boundary (HAGB, black lines) (a4) of the C-5 steel under LCF loading at 700oC with εt = 0.7%, enlarged IPF and pole figures (PFs) of p-TBs in the selection area in Fig.5a1 (b), IPF and PFs of Σ3-type TBs with εt = 0.7% (c) and in ST C-5 steel (d)