690 MPa级高强韧低碳微合金建筑结构钢设计及性能
朱雯婷1, 崔君军1, 陈振业1,2, 冯阳1, 赵阳3, 陈礼清1(
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Design and Performance of 690 MPa Grade Low-Carbon Microalloyed Construction Structural Steel with High Strength and Toughness
ZHU Wenting1, CUI Junjun1, CHEN Zhenye1,2, FENG Yang1, ZHAO Yang3, CHEN Liqing1()
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图 4. 实验用钢不同厚度处的SEM像
(a) 1/8 thickness
(b) 1/4 thickness
(c) 1/2 thickness
Fig.4. SEM images of the tested steel at different positions (LB—lath-like bainite, GB—granular bainite, BF—bainite ferrite, M/A—martensite/austenite)
