点击次数：

论文类型：期刊论文

发表时间：2017-07-15

发表刊物：CORROSION SCIENCE

收录刊物：SCIE、EI、Scopus

卷号：123

页面范围：243-255

ISSN号：0010-938X

关键字：Aluminum alloy; TEM; Polarization; Exfoliation corrosion

摘要：The 7N01-T5 alloy (AT5) and 7N01-T4 alloy (AT4) were butt welded by metal inert gas (MIG) welding with ER5356 filler wire, and the mechanical properties and corrosion resistance of welded joint were investigated. The mechanical properties of welded joint are inferior to those of base metals (BMs). In the welded joint, the difference in composition of Zn, Cu and the amount of precipitates between AT5 side and AT4 side induces the variance of corrosion potential, resulting in the appearance of galvanic corrosion, then the highest corrosion susceptibility occurred on the AT4 side of the region adjacent to the weld zone.