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wei liang zuo xi tu he jin hua dui gao qiang lv he jin ly12cz han jie re lie wen qing xiang xing de ying xiang
Author(s): 
Pages: 106-113
Year: Issue:  1
Journal: Materials Science and Technology

Keyword:  交流脉冲钨极氩弧焊鱼骨状热裂纹试验裂纹敏感性晶间裂纹;
Abstract: LY12CZ是一种共晶型高强铝合金,其焊接性极差。本文采用交流低频脉冲钨极氩弧焊(AC PTIG),探讨了重稀土钇(Y)对LY12CZ焊缝组织及其焊接性的影响。试验表明:由焊丝可以向焊缝金属中过渡适量稀土金属钇。适量钇可以细化焊缝金属组织,改善焊缝树枝状组织,对提高焊缝抗热裂纹性能及焊接接头的机械性能有一定的作用。
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