Effect of Post Weld Heat Treatment on Toughness of Base Metal of Nuclear Reactor Pressure Vessel Steel A533B

摘要：

The effect of post weld heat treatment (PWHT) on the toughness of nuclear reactor pressure vessel steel was investigated. Fracture toughness (KJC) and Charpy impact toughness (KVC) were obtained at different temperatures for quenched-tempered(QT) and PWHT A533B steel plates, respectively. The results show that PWHT increases the ductile-brittle transition temperature, and decreases the KJC and KVC. By using SEM and Electron probe micro-analyzer (EPMA), it is found that the size of the precipitation phases increased and molybdenum precipitated during PWHT respectively. The relationship between the size of the precipitation phases and the fracture toughness are analyzed and the influence of microstructure is also briefly discussed.

关键词： nuclear power plant pressure vessel fracture toughness precipitation phases

作者: LI Yun-liang ZHANG Han-qian FU Li-ming CHEN Jiang-biao LI Jin-fu

作者单位: School of Materials Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240, China School of Materials Science and Engineering , Shanghai Jiao Tong University , Shanghai 200240,China;

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 550-553

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）