摘要
以镁合金AZ31B为研究对象,采用钨极氩弧焊(TIG)填丝工艺,研究在不同焊接工艺参数下(I=120～200A,U=11～15V,v=3～11mm/s)的焊接电弧热效率和熔化效率,并探讨焊接工艺参数、焊接热效率和熔化效率对焊接接头微观组织的影响。结果表明:焊接工艺条件下,镁合金AZ31B的焊接电弧热效率值在0.56～0.82之间;熔化效率随着焊接电流和焊接速率的增加而增大;不同的焊接工艺对焊接接头的横截面形状(熔深B和熔宽H)和微观组织都有较大的影响。
The AZ31B magnesium alloy welded joint were carried out on tungsten inert gas（TIG） welding with filler, and arc heat efficiency and melting efficiency were studied in terms of process pa- rameters （welding current in the range of 120-200A, welding voltage in the range of 11-15V and weld- ing speed in the range of 3-11mm/s）, and the effects of welding process parameters, arc heat efficien- cy and melting efficiency on the microstructure of welding joint were analyzed. The results showed that the arc efficiency values ranged from 0.56-0.82 in terms of welding process parameters. Melting efficiency increased with both increasing welding current and speed. The analyses revealed a strong influence of the TIG welding process on cross-section shape of the fusion zone （the depth B and width H） and also on the microstructure of the welding zone.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2012年第12期29-32,38,共5页
Journal of Materials Engineering
基金
江苏省自然科学基金资助项目(BK2009354)
南京工程学院科研基金资助项目(QKJA2010002)
大学生科技创新基金资助项目(N20120205)
