1100 MPa级高强钢的低周疲劳行为
周红伟1,2, 白凤梅3,4(), 杨磊1,2, 陈艳1,2, 方俊飞1,2, 张立强3, 衣海龙4, 何宜柱1,2
Low-Cycle Fatigue Behavior of 1100 MPa Grade High-Strength Steel
ZHOU Hongwei1,2, BAI Fengmei3,4(), YANG Lei1,2, CHEN Yan1,2, FANG Junfei1,2, ZHANG Liqiang3, YI Hailong4, HE Yizhu1,2

图4. 高强钢调质态组织的TEM像

Fig.4. TEM images of high-strength steel (The dotted circle indicates triangular grain boundaries and the boxes highlight the position of precipitates)
(a) martensitic lath and nanoscale precipitate
(b) prior austenite grain boundary (PAGB) and nanoscale precipitate (c, d) bright (c) and dark (d) field TEM images of precipitates, respectively