A study on reheat cracking susceptibility of SA543 steel

摘要：

In this paper, the reheat cracking susceptibility of SA543 steel was studied through Y-groove reheat cracking tests, reheat cracking implant tests and Gleeble tests. It was shown that micro-cracking occurred in Y-groove testing specimen after heat treatment at 595 ℃ for 3.5h. The cracking was found in the coarse grained region of HAZ and propagated along grain boundary, which is the typical characteristic of reheat cracking. Implant tests were conducted for SA543 steel at three temperatures, i.e. 575 ℃, 595 ℃ and 615 ℃. The results showed that the critical fracture stresses are 450MPa, 300MPa and 250MPa, respectively. And the susceptible temperature of SA543 steel was concluded to be 615 ℃. During Gleeble tests, the reduction of area (ROA) of welding specimens was found to be higher than 20％, which indicated that the reheat cracking susceptibility of the SA543 steel was not obvious.

关键词： SA543 steel Reheat cracking susceptibility Implant test Gleeble test

作者: Huaquan Pu Xuemei Luo Wanbo Dou Xuedong Chen

作者单位: National Technology Research Center on PVP Safety Engineering, Hefei General Machinery Research Institute, Hefei, 230031, China

会议类型: 国际会议

会议名称: 2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011

会议地点: 合肥

会议语种:英文

页码: 269-274

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）