2A12铝合金搅拌摩擦焊接过程中接头组织与焊接工艺的关系_李鲲鹏.pdf

DOI :10.13979/j.1007 -7235.2005.01.009 4　4　　　　　　　 　　　　　　 2005, Vol.33, №1 2A12 铝合金搅拌摩擦焊接过程中 接头组织与焊接工艺的关系 李鲲鹏,郭伦春,万发 , 龙　毅 (, 100083) :2A12 , 、 2A12 。, , 750 r/min ～ 1 180 r/min, 23.5 mm/min～30 mm/min, 。 70%。。 。 :;;2A12 :TG146.21;TG44 　　:A　　:1007-1752(2005)01-0044-04 Study on the 2A12 Aluminium Alloy Microstructure and the Welding Parameters of Friction Stir Welding LI Kun-peng,GUO Lun-chun,WAN F -rong, LONG Yi (School of Material Science and Engineering University of Science and Technology Beijing, Beijing 1000 3, China) Abstract:This p per presents the experiments of friction stir welding (FSW)2A12 luminium lloy sheet, lso discuss the design rule of the tool th t w s used in the FSW, nd study the effects of the friction stir welding p r meters.It w s found th t successful welding could be chieved when the friction tool rot tion speed r nges between 750 r/min ～ 1 180 r/min nd welding speed r nge from 23.5 mm/min ～30 mm/min.And the h rdness of the weld ccount for 70 percent of the m in body m teri l.It is much prefer- ble for successful welding in c se th t the length of the probe is little shorter th n the thickness of the Al-lloy sheet.Fin lly, it w s found th t the form of the welding defect hole h s the rel tionship with probe be ring screw thre d. Key words:Friction stir welding;FSW;probe;2A12 Al-lloy 　　(Friction Stir Welding FSW) , , ,20 90 , , ,, , 、、, 。, 。 , 、 TIG , ,、 ,, [1～3] 。 。