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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：材料科学与工程学院党委书记
其他任职：Chair
性别：男
毕业院校：哈尔滨工业大学
学位：博士
所在单位：材料科学与工程学院
学科：材料连接技术
办公地点：大连理工大学材料科学与工程学院铸造中心304室
联系方式：Tel: 86 411 84706283
电子邮箱：donghg@dlut.edu.cn
论文成果
当前位置: Dong Honggang >> 科学研究 >> 论文成果Influence of post-weld heat treatment on microstructure and properties in heat-affected zone of KMN steel joint
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论文类型：期刊论文
发表时间：2014-06-01
发表刊物：China Welding (English Edition)
收录刊物：EI、Scopus
卷号：23
期号：2
页面范围：1-6
ISSN号：10045341
摘要：The influence of temperature during post-weld heat treatment on the microstructure and properties of KMN steel joints was investigated. The results reveal that after heat treatment, the martensite transformed to tempered sorbite, causing the softening of the resultant joints. XRD test shows that the residual austenite content decreased obviously when the joint was heat-treated at 550?? and 580??, which degraded the impact toughness of heat-affected zone (HAZ). When the heat treatment temperature increased further, the dispersion strengthening from the precipitation of alloying elements improved the impact toughness of HAZ. The aggregation and coarsening of carbide also contributed to the improvement of impact toughness of HAZ. Copyright: ? 2014 Editorial Board of CHINA WELDING.