电焊机2017，Vol.47Issue(9)：12-17,6.DOI:10.7512/j.issn.1001-2303.2017.09.03
DP590双相钢/6061铝合金激光熔钎焊工艺特性研究
Laser welding-brazing characteristics of dual-phase steel DP590/Al alloy 6061
摘要
Abstract
Fiber laser welding-brazing of 1.2 mm-thick cold-rolled dual-phase steel DP590 and 1.5 mm-thick Al alloy 6061 with fluxcored wire Zn-2％Al was performed in butt configuration.Effects of welding parameters such as bridge gap and laser beam offset on the microstructure and properties of joints were investigated.The results indicated that the suitable process parameters were the bridge gap of 1mm with no offset of laser beam and bridge gap of 0.75 mm with offset toward Al alloy within 1.2 mm.The maximum tensile strength could reach 275.7 MPa,88.37％ of that of the base metal Al alloy.Fracture location was in heat affected zone of Al alloy in this case.The tensile strength could always surpass 220 MPa with offset toward Al alloy within 1.2 mm.And the thick of the intermetallic of best joints in this research was below 1 μm关键词
铝/钢接头/激光熔钎焊/工艺特性/力学性能Key words
Al-steel joint/laser welding-brazing/welding characteristics/mechanical properties分类
矿业与冶金引用本文复制引用
邓枫昱,檀财旺,孟圣昊,李国新,赵洪运,冯吉才..DP590双相钢/6061铝合金激光熔钎焊工艺特性研究[J].电焊机,2017,47(9):12-17,6.基金项目
国家自然科学基金资助项目(51504074) （51504074）
昆山市科技计划(订制储备一批科技成果KD1050) （订制储备一批科技成果KD1050）
