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X70管线钢的瞬时液相扩散焊接头组织和力学性能

Lei WANG,Jianrong YU,Long YUE

Electric Welding Machine（2015）

Cited 1|Views9
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Abstract
对X70管线钢进行瞬时液相扩散焊接,采用热电偶测温,氨气作为保护气,铁镍非晶体箔片作为中间层,在焊接压力3 MPa、双温焊接工艺条件下,分析不同保温温度和保温时间对焊缝接头金相组织和力学性能的影响.结果表明,高温1 210℃～1 230 ℃,保温1 180℃～1 200℃,保温时间4～8 min条件下,焊缝抗拉强度均强于母材.通过观察焊缝分析和拉伸断口形貌,保温温度和保温时间对中间层元素扩散效果影响很大.
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