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han jie dian liu dui 6061 lv he jin jie tou zu zhi he xing neng de ying xiang
Author(s): 
Pages: 29-32
Year: Issue:  8
Journal: Welding Technology

Keyword:  焊接电流6061铝合金接头性能断口形貌影响;
Abstract: 采用手工钨极氩弧焊工艺对3 mm厚6061铝合金进行焊接,利用金相显微镜、扫描电镜、显微硬度计等分析测试手段,研究不同焊接电流下的焊接接头组织和性能。结果表明,钨极氩弧焊接头由于焊接电流大小不同,热输入不同,生成的组织也就不同。50 A焊接电流生成的晶粒很细小,但其熔深不够;75 A焊接电流生成的晶粒较小,熔深较为合适;95 A焊接电流生成的晶粒较大,同时也有了过烧的迹象。
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