摘要
采用回填式搅拌摩擦点焊技术制备1.0 mm厚6016-T4铝合金点焊接头,并通过正交试验法对其表面成形、剪切拉伸、十字拉伸和显微硬度进行分析,探究焊接工艺参数对6016-T4铝合金点焊接头组织及力学性能的影响。结果表明,焊接时间4.5 s、旋转速度1600 r/min、下扎深度1.4 mm为最佳焊接工艺参数,接头剪切拉伸力、十字拉伸力分别为4.02 kN与1.32 kN;中间部位的搅拌针作用区硬度较为均匀,硬度值高于母材区;焊点接头在剥离试验过程中均未出现松动,说明焊点牢固,质量良好。
Refill friction stir spot welding joint of a 1.0 mm thickness 6016-T4 aluminum alloy was prepared by different parameters.The comprehensive properties of 6016-T4 aluminum alloy joint by different parameters was studied through the analysis of its surface formation,shear tensile,crossing tensile and micro-hardness by using orthogonal test.The results show that the optimum parameters are with the welding time of 4.5 s,the rotation speed of 1600 rpm and the depth of 1.4 mm.The shear tensile force and cross tensile strength of the joint are respectively 4.02 kN and 1.32 kN.The micro-hardness of the action area of the pin is more uniform,and the micro-hardness value is higher than that of the base metal area.The joints do not show any looseness during the peeling tensile test,indicating that the joints are firm and qualified.
作者
徐红勇
王瑾
聂盼
吉华
洪晓祥
张阳阳
Xu Hongyong;Wang Jin;Nie Pan;Ji Hua;Hong Xiaoxiang;Zhang Yangyang(Aerospace Engineering Equipment(Suzhou)Co.,Ltd.,Suzhou 215100,Jiangsu,China;Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 200240,China)
出处
《焊接》
2020年第8期33-38,63,共7页
Welding & Joining
作者简介
第一作者:徐红勇,1989年出生,硕士,工程师,主要从事轻量化连接技术研究;通信作者:吉华,1986年出生,博士,高级工程师,主要从事轻合金材料的特种连接技术研究。
