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zuo fen tian jia liang dui lv he jin ji guang - dian hu fu he han jie qi kong lv de ying xiang
Author(s): 
Pages: 10-13
Year: Issue:  8
Journal: Welding Technology

Keyword:  激光-电弧复合焊接铌粉铝合金气孔;
Abstract: 基于6061铝合金板开展激光-电弧复合焊接工艺试验,结合不同铌粉添加量下的焊缝气孔率特征,分析添加铌粉对焊缝气孔的影响机理,获得铌粉添加量的合理范围。结果表明,添加铌粉可以抑制铝合金激光-电弧复合焊接气孔产生,降低气孔率;当铌粉线添加量为8.84 mg/cm时,焊缝横截面气孔率最低,为0.01%;由于铌粉增加了激光吸收率与熔池金属密度,促进了气泡形核与长大,从而促使气泡逸出,减少气孔数量。
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