Investigation on laser brazing AA6056 Al alloy to XC18 low-carbon steel

查看全文 作　　者：[1]丁健君;[1]李飞群;[1]瞿丰;Patrice [2]Peyre;Remy [2]Fabbro 机构地区：[1]College of Materials Science and Engineering Shanghai Jiao Tong University, Shanghai 200030;[2]Cooperation Laser Franco-Allemande 94114 ARCUEIL, France 出　　处：《Chinese Optics Letters》索引2005年第3卷第1期,共4页 摘　　要：Based on the studies of influence of YAG laser heating conditions for Al alloy melt and steel on wettability,the mechanics of the laser overlap braze welding of 6056 Al and XC18 steel sheet has been investigated.Under the temperature range which is above the melting point of the Al alloy and below the melting point of the steel, two dissimilar metals can be joined by means of laser braze welding. There is no crack observed in the joining area, i.e. Al-Fe intermetallic phase (Fe3Al/FeAl/FeAl3/Fe2Al5) layer formed by solution and diffusion between liquid-solid interface. The temperature range can be defined as the process temperatures of laser braze welding of Al-Fe materials. Selecting a higher laser heating temperature can improve the wettability of Al melt to steel surface, but the intermetallic phase layer is also thicker. When the laser heating temperature is so high that the joining surface of steel is melted, there is a crack trend in the joining area. 关 键 词：6056铝合金 激光器 制作工艺 XC18低碳钢 铜焊接法