摘要
采用电化学腐蚀和浸泡腐蚀试验对双轴肩搅拌摩擦焊AA2219-T87型铝合金的不同区域进行了腐蚀研究。结果表明,焊缝区具有最高的耐腐蚀性,母材的耐腐蚀性最差。母材中析出相的体积分数最高,越靠近焊核,析出相回溶数量越多。焊核区由细小的等轴晶组成,只存在少量θ相。
The corrosion behavior of different regions of AA2219-T87 aluminum alloys after self-reacting friction stir welding was investigated through the electrochemical corrosion and immersion corrosion tests.The results show that the weld nugget zone(WNZ)has the optimal corrosion resistance,while the base material shows the worst corrosion resistance.In the base material,the volume fraction of precipitated phase is the largest.The closer the area to the nugget center,the more the dissolving precipitated phase.WNZ is composed of fine equiaxed grains with a small amount of θ phase.
作者
邵明皓
张健
王渭平
刘德博
郭启龙
张华
Shao Minghao;Zhang Jian;Wang Weiping;Liu Debo;Guo Qilong;Zhang Hua(School of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;Beijing Institute of Aerospace Systems Engineering,Beijing 100076,China;Regional Representative Office in Chengdu,Chengdu 610100,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2022年第5期1620-1626,共7页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(51774047)。
关键词
双轴肩搅拌摩擦焊
铝合金
腐蚀行为
耐腐蚀性
self-reacting friction stir welding
aluminum alloy
corrosion behavior
corrosion resistance
