期刊
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
卷 20, 期 4, 页码 297-306出版社
MANEY PUBLISHING
DOI: 10.1179/1362171815Y.0000000006
关键词
Soft variable polarity plasma arc; Horizontal position welding; Weld asymmetry
资金
- National Natural Science Foundation of China [51475105]
Soft variable polarity plasma arc welding technology has been proposed to solve the problems in horizontal position welding for aluminium alloys. Arc thermal field shape, arc pressure distribution and the characteristic of the weld pool, which are important for keyhole stability, have been changed compared with the ordinary variable polarity plasma arc. Its stability in application can be evaluated by the operational window. The thermal cycle curves, microstructures and microhardness of the horizontal position weld indicate the weld asymmetry. The influence of asymmetry as well as welding defects on tensile strength and fracture behaviour has been studied. The fundamental reason for the asymmetry was considered as the asymmetric fluid flow around the keyhole in the weld pool.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据