摘要
采用电化学腐蚀试验研究了2024-T3铝合金搅拌摩擦焊接头在3.5%NaCl溶液中的电化学腐蚀特征和腐蚀行为,结合金相显微镜、扫描显微镜等分析手段研究了接头腐蚀后的表面形貌,并对其腐蚀机理进行了初步探讨。结果表明：接头不同区域腐蚀敏感性不同,搅拌摩擦焊接头焊核区和热影响区的耐蚀性低于母材,焊核区腐蚀最严重。
The electrochemical corrosion characteristics and corrosion behavior of 2024-T3 aluminum alloy friction stir welding（FSW） joint in 3.5% NaCl solution were studied by using electrochemical corrosion tests. The surficial morphologies of the joint after corrosion were analyzed by using optical microscopy（OM）, scanning electron microscopy（SEM）, and the corrosion mechanism was preliminary discussed. The results show that the corrosion sensibilities of different regions of the joint are different. The corrosion resistance of stirring zone and heat affected zone of the FSW joint is lower than that of base metal, and the corrosion of stirring zone is the most serious.
作者
李娜
陈斌
王艳松
南黄河
何冰
LI Na;CHEN Bin;WANG Yansong;NAN Huanghe;HE Bing(Shaanxi Railway Institute,Weinan 714000,China;School of Materials Science and Engineering,Northwestern Polytechnical University,Xi＇an 710072,China;Luoyang Ship Material Research Institute,Luoyang 471023,China)
出处
《热加工工艺》
CSCD
北大核心
2018年第17期201-203,207,共4页
Hot Working Technology
基金
陕西省教育厅科学研究计划项目(16JK1172)
陕西铁路工程职业技术学院2016科研基金项目(KY2016-23)
关键词
2024铝合金
搅拌摩擦焊
腐蚀机理
2024 aluminum alloy
friction stir welding
corrosion mechanism
