汽车用6061铝合金板的搅拌摩擦加工改性  

Modification of 6061 Aluminum Alloy Plate for Automotive by Friction Stir Processing

作　　者：黄芳[1] 张雪晖[1] 叶建美[1] HUANG Fang;ZHANG Xuehui;YE Jianmei(Zhejiang Industry Polytechnic College,Shaoxing 312000,China)

机构地区：[1]浙江工业职业技术学院,绍兴312000

出　　处：《机械工程材料》2019年第1期23-26,共4页Materials For Mechanical Engineering

基　　金：浙江省教育厅科研项目(FG2014115)

摘　　要：采用搅拌摩擦加工对汽车用6061铝合金板进行改性处理,研究了不同旋转速度(300～1 100r·min-1)和行进速度(120～300mm·min-1)下铝合金的拉伸性能和耐腐蚀性能。结果表明:在行进速度为300mm·min-1条件下,随着旋转速度的增大,6061铝合金的抗拉强度和屈服强度先增大后减小,伸长率呈曲折变化趋势,自腐蚀电位先正移后负移,且当旋转速度为600r·min-1时,抗拉强度和屈服强度最大,自腐蚀电位最正;在旋转速度为600r·min-1条件下,随着行进速度的增大,6061铝合金的抗拉强度和屈服强度增大,伸长率先减小后增大,自腐蚀电位先正移后负移,且当行进速度为300mm·min-1时,抗拉强度和屈服强度最大,自腐蚀电位最正;旋转速度和行进速度分别为600r·min-1、300mm·min-1时,6061铝合金的拉伸性能和耐腐蚀性能最优。The modification of 6061 aluminum alloy plate for automobile were carried out by friction stir processing,and the tensile properties and corrosion resistance at different rotation speeds(300-1 100r·min^-1)and travel speeds(120-300 mm·min^-1)were studied.The results show that when the travel speed was 300 mm·min^-1,with increasing the rotation speed,the tensile strength and yield strength of 6061 aluminum alloy first increased and then decreased,and the elongation changed with inflection;the self-corrosion potential first moved positively and then negatively;when the rotation speed was 600r·min^-1,the tensile strength and yield strength were the highest,and the self-corrosion potential was the most positive.When the rotation speed was 600r·min^-1,with increasing the travel speed,the tensile strength and yield strength of 6061 aluminum alloy increased,the elongation first decreased and then increased;the self-corrosion potential first moved positively and then negatively;when the travel speed was 300mm·min^-1,the tensile strength and yield strength were the highest,and the selfcorrosion potential was the most positive.When the rotation speed and travel speed were 600r·min^-1 and 300mm·min^-1,respectively,the tensile properties and corrosion resistance of 6061 aluminum alloy were the best.

关 键 词：6061铝合金 搅拌摩擦加工 拉伸性能 耐腐蚀性能 

分 类 号：TG241[金属学及工艺—铸造]