摘要
本文研究了铝合金Ａ５０５２和Ａ５０８３在不同焊接条件下的激光焊接特性，并对主要合金元素Ｍｇ的蒸发以及由金属蒸气引起的高温等离子体反作用力对熔深的影响进行了试验研究。试验结果表明：适当的工件表面粗糙度可提高母材对激光光束能量的吸收；适当增大保护气流量和改变激光入射角度，可有效地提高熔化效果及增大熔深。
In this investigation, through welding aluminum alloys 5052, 5083 by laser in differ-ent welding condition,the character of melting was compared and analytal. The followingtwo problems were studied: the evaporation of main alloying element Mg and the influence of the reaction force induced from metal evapor and thermal plasma on penetration. The experi-ment result confirmed that the increment of the shield gas flow rate in some extent and thechange of entrance angle of laser beam would improve the meltability and increase the penetration depth, the suitable glanularity of workpiece surface would improve the absorptivityof laser beam.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1995年第1期30-35,共6页
Transactions of The China Welding Institution
关键词
蒸发
铝合金
激光焊
熔化性
evaporation
aluminum
laser welding
meltability
