...拌头；多道焊[gap=1482]s: 2219 aluminum alloy; friction stir welding; weld defect; telescopic stir-pin; multi-pass welding...
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... 单层焊 single larger welding 多层焊 multi-pass welding 分段多层焊 block sequence & block welding ...
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In the multi-pass welding, when the first top temperature is 1300℃and the second top temperature is 800℃, it is found the local brittle zone of inter-critically reheated coarse-grained HAZ(IRCGHAZ).
在两面焊或多道焊时,当一次热循环峰值温度为1300℃,二次热循环峰值温度为800℃时,表现为临界粗晶区的局部脆化现象。
参考来源 - X80管线钢焊接热敏感性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Temperature and stress fields of multi-pass welding of orthogonal nozzles were simulated.
对正交接管焊接接头的温度场和应力场进行了数值模拟。
Half-circle model and full-circle model, fixed heat source and moving heat source, single pass and multi-pass welding are used for comparison.
比较了半周模型和全周模型，固定热源和移动热源，单道焊和多道焊下的分析结果。
Welding deformations of a pipe-plate joint with holes after multi-pass welding are simulated using the thermal-elastic-plastic finite element method.
采用三维热弹塑性有限元法对管板接头的焊接变形进行数值模拟。
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