材料工程Issue(7)：29-33,5.
厚板铝合金搅拌摩擦焊匙孔补焊接头组织与性能
Microstructures and Properties of Thickness Aluminium Alloy Eleocellarium Repairing Welding Joint by Friction Stir Welding
摘要
Abstract
The welding technology of 35mm thickness aluminium alloy eleocellarium repairing welding was investigated. Microstructures and properties of the welding joint have been studied by using optical microscope, scanning electron microscope, energy spectrum analysis, micro-hardness tester and e-lectron tensile testing machine. Experimental results show that the formation of weld is good and there are no defects of tunnel, hole and groove defect by FSW after filling eleocellarium with aluminum alloy block, and there are groove defects by FSW without filling eleocellarium. The visible clear kiss defect was formed between weld nugget zone and thermal-mechanical affected zone in advencing side when welding with FSW once; The transition zone of advancing and retreating side were formed well between weld nugget zone and thermal-mechanical affected zone in advancing side when welding with FSW twice and thrice. The microhardness of once and twice welding distributing was W model and reached 56HV and 60HV in heat affected zone of advancing side. The joint tensile strength of welding once, twice and thrice reached 173, 210MPa and 205MPa at rotation speed of 720r/min and welding speed of 180mm/min.关键词
铝合金/搅拌摩擦焊/焊接工艺/组织/性能Key words
aluminum alloy/friction stir welding/welding technology/ microstructure/ property分类
矿业与冶金引用本文复制引用
刘杰,杨景宏,韩凤武,宫文彪..厚板铝合金搅拌摩擦焊匙孔补焊接头组织与性能[J].材料工程,2012,(7):29-33,5.基金项目
吉林省科技发展计划项目(20100362) （20100362）
长春轨道客车股份有限公司技术开发项目(J0000000018K). （J0000000018K）
