1100 MPa级高强钢的低周疲劳行为

周红伟, 白凤梅, 杨磊, 陈艳, 方俊飞, 张立强, 衣海龙, 何宜柱

Low-Cycle Fatigue Behavior of 1100 MPa Grade High-Strength Steel

ZHOU Hongwei, BAI Fengmei, YANG Lei, CHEN Yan, FANG Junfei, ZHANG Liqiang, YI Hailong, HE Yizhu

表1 不同种类高强钢的力学性能

Table 1 Mechanical properties for several high-strength steels

High-strength steel σ0.2 / MPa σb / MPa δ / % Microstructure Ref. 1100 MPa grade 1160 1355 17.8 Tempered lath martensite - ASTM A723 1170 1262 13.0 Tempered lath martensite [25] 34CrNiMo6 967 1035 18.0 Martensite, lower bainite [7] HSLA 893 914 15.3 Lath bainite [24] 10CrNiMo 830 925 19.0 Tempered lath martensite [5]