封面

在高强管线钢的工程应用过程中，较高的焊接残余应力会导致焊缝产生应力腐蚀和疲劳裂纹以至失效。简要介绍了高强度管线钢的焊接方法，对比了传统电弧焊与先进焊接方法的工艺特点，以及不同焊接方法的残余应力分布，概述了通过无损检测手段进行残余应力分析的相关研究结果，并通过数值模拟进行了焊接残余应力的对比和分析。指出，通过不同的数值模型及有限元分析等手段，可快速获得不同焊接方法的接头残余应力分布，以便于对焊接工艺进行调整。

Research Status of Welding Residual Stress of High Strength Pipeline Steel

In the process of engineering application of high strength pipeline steel, high welding residual stress will lead to stress corrosion and fatigue crack and even failure. The welding methods of high strength pipeline steel are briefly introduced. The process characteristics of traditional arc welding and advanced welding methods are compared, as well as the residual stress distribution of different welding methods. The research results of residual stress analysis by nondestructive testing are summarized, and the comparison and analysis of welding residual stress are carried out by numerical simulation. It is pointed out that the residual stress distribution of different welding methods can be obtained quickly by different numerical models and finite element analysis, so as to adjust the welding process.