5A06铝合金电子束焊接中镁元素的烧损行为
Evaporation and Loss of Mg Element in Electron Beam Welding of 5A06
摘 要
研究了5A06铝合金电子束焊接后熔池内镁元素的分布及其对焊缝硬度的影响,并分析了焊接参数对镁元素烧损行为的影响.结果表明:在同一熔池中随着深度的增加,镁元素含量增加,即烧损程度减小,同时显微硬度增大;随着加速电压和束流的增加,熔池熔深增加,镁元素烧损程度降低;随着焊接速度增加,镁元素烧损程度降低,熔深却减小.为减小镁元素烧损,在电子束焊接时可适当增加焊接的加速电压与束流,加快焊接速度.
电子束焊
镁元素
烧损
5A06 alloy
electron beam welding(EBW)
Mg
evaporation and loss
Abstract
Distribution of Mg in melt pool and its effects on mechanical properties of seam were investigated in 5A06 alloy electron beam welding(EBW),and influence of welding parameters on evaporation and loss of Mg element was analyzed.With the deepth in melt pool increasing,containment of Mg grew,indicating that evaporation and loss of Mg reduced,and micro-hardness increased.With increasing of accelerating voltage and beam current,fusion penetration increased,evaporation and loss of Mg decreased.With increasing of welding speed,evaporation and loss of Mg reduce while fusion penetration diminish.In order to minimize evaporation and loss of Mg,the considerable increasing of accelerating voltage,beam current and welding speed is preferred.
中图分类号 TG456.3
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收稿日期 2005/11/28
修改稿日期 2006/2/10
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备注汪兴均(1977-),男,重庆梁平人,硕士研究生.
引用该论文: WANG Xing-jun,HUANG Wen-rong,WEI Qi-long,SHEN Xian-feng,LEI Hua-dong. Evaporation and Loss of Mg Element in Electron Beam Welding of 5A06[J]. Materials for mechancial engineering, 2006, 30(12): 29～32
汪兴均,黄文荣,魏齐龙,沈显峰,雷华东. 5A06铝合金电子束焊接中镁元素的烧损行为[J]. 机械工程材料, 2006, 30(12): 29～32
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参考文献
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