XU Xiangxing SU Yi ZHOU Wei Tsinghua University
,
Beijing
,
ChinaCAI Qigong Central Iron and Steel Research Institute
,
Ministry of Metallurgical Industry
,
Beijing
,
China XU Xiangxing
,
Dept.of Mechanical Engineering
,
Tsinghua University
,
Beijing
,
100084
,
China
金属学报(英文版)
The cleavage fracture mechanism of granular bainitie weld metal in 15MnVN steel has been investigated.SEM observation of a special specimen for revealing simultaneously fracture sur- face and microstructure shows that the cleavage of the weld is initiated by M-A constituent. The 95th percentile equivalent diameter of M-A constituent controls the cleavage fracture stress of the weld metal.
关键词:
granular bainite
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null
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null
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