采用焊接热模拟技术和显微分析方法，研究了回火焊道热处理对X80级管线钢焊接热影响区韧性的影响规律。
The effects of tempering weld-pass treatment on toughness of HAZ of X80 pipeline steel were studied by the technique of welding thermal simulation and the method of microscope analysis.
结果表明，X80级管线钢在焊接过程中形成的热影响区由不同温度下形成的梯度组织组成。
The results indicate that HAZ produced during welding of grade X80 steel is made up of grads structure under different temperature.
分析了X80级管线钢应用中应关注的几个问题。
It analyses the few attention issues applied in grade X80 pipeline steel.
应用推荐