TLP焊用非晶态中间层合金的制备及焊接性能  

Preparation and welding performance of amorphous interlayer alloys for TLP bonding

作　　者：翟秋亚[1] 仝都喜[1] 李为卫 宫少涛 徐锦锋[1] 

机构地区：[1]西安理工大学材料学院,西安710048 [2]西安管材研究所,西安710065

出　　处：《焊接学报》2009年第9期17-20,共4页Transactions of The China Welding Institution

基　　金：中国石油天然气集团公司石油科技中青年创新基金项目(06E1032);西安市科技局创新支撑计划项目(CXY08001)

摘　　要：研究了适于16Mn钢TLP焊用非晶态Ni-Si-B中间层合金的成分及相选择,在热力学模拟试验机上对16Mn钢进行了TLP焊接,分析了中间层合金的焊接性能、结合界面组织和接头力学性能.结果表明,非晶态镍基中间层合金在TLP焊16Mn钢的过程中具有良好的润湿性和铺展性.接头填充饱满,组织均匀,界面母材与原始组织相比未有粗化迹象.焊接工艺参数为轴向压力10MPa、升温速度50℃/s、焊接温度1150℃和保温时间5min条件下,所得接头的弯曲角达90°.Ni基非晶态中间层实现了16Mn钢TLP焊高强度连接.The composition and phase selection of Ni-Si-B amorphous interlayer alloys for transient liquid phase(TLP)bonding of 16Mn steel have been investigated.The TLP bonding experiment of 16Mn steels was conducted by a Gleeble-3500 thermal simulation testing machine,and the welding performance of the interlayer alloys,the interface microstructure and joint properties were analyzed.The results indicate that the amorphous Ni-6.8Si-(3-5)B interlayer alloys performs an excellent wettability and spreadability during TLP bonding.The joint gap is filled soundly and interfacial microstructure is uniform,which has no coarsening evidence compared with base metal.Under the experimental condintions of axial compressive load 10 MPa,temperature rising rate 50 ℃/s,bonding temperature 1 150 ℃,holding time 5 min.,the joint bending angle reaches to 90°.Using amorphous Ni-based interlayer alloys can realize the higher strength TLP bonding of 16Mn steels.

关 键 词：16MN钢 TLP焊 非晶态 中间层合金 

分 类 号：TG457.13[金属学及工艺—焊接]