摘要
通过力学性能试验、硬度试验和电子显微镜观察,研究了500℃~650℃热处理工艺对S500Q钢焊接接头力学性能和断口的影响。结果表明:500℃~580℃热处理对S500Q钢焊接接头力学性能影响较小。580℃~650℃热处理使焊接接头的抗拉强度和屈服强度降低,随着温度的升高,降低量逐渐增加。500℃~650℃热处理工艺对焊接接头的延伸率基本无影响,冲击功呈现先增大后减小的趋势。不同热处理工艺下S500Q钢焊接接头断口形貌为河流状花样。
In this paper,the effect of heat treatment process at 500℃~650℃ on microstructure and properties of S500Q steel welded joint was studied by mechanical property test,hardness test and electron microscope test.The results show that heat treatment at 500℃~580℃ has little effect on the mechanical properties of S500Q steel welded joint.The tensile strength and yield strength of the welded joint decrease at 580℃~650℃,and the decrease increases with the increase of temperature.Heat treatment at 500℃~650℃ has no effect on the elongation of S500Q steel welded joint,while the impact energy increases first and then decreases.The fracture morphology of S500Q steel welded joint is fluvial pattern under different heat treatment processes.
作者
葛光男
刘毅
丁军锋
赵鹏
GE Guang-nan;LIU Yi;DING Jun-feng;ZHAO Peng(Harbin Electric Machinery Company Limited,Harbin 150040,China;School of Material Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)
出处
《内燃机与配件》
2020年第9期128-129,共2页
Internal Combustion Engine & Parts
