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; 文献标志码:A Laser welding of steel/aluminum dissimilar metal with powder addition ZHANG Li-juan, ZHOU Dian-wu, LIU Jin-shui, XU Shao-hua, QIAO Xiao-jie, LI Sheng (State Key Laboratory... words: laser welding; dissimilar metal; intermetallic compound; microstructure; mechanical properties 汽车轻量化成为21世纪汽车技术的前沿和热点,大量轻质材料在车身上的使用对于整车的轻量化起着举足轻重的作用.对汽车车身多材料结构而言,要求两种不同类型的材料(如钢/铝,铸铁/铝,铝/镁等)进行连接......
3A21铝合金-20钢管磁脉冲连接实验研究于海平1,2,徐志丹1,李春峰2,赵志学2(1.黑龙江省哈尔滨市哈尔滨工业大学材料科学与工程学院2.黑龙江省哈尔滨市哈尔滨工业大学现代焊接生产技术国家重点实验室)摘 要:利用低电感线圈磁脉冲连接(MPJ)装置,研究了放电电压,管件径向间隙和搭接区长度对3A21铝合金20钢管连接接头拉伸和剥离力学性能的影响.通过SEM进行了接头界面的微观形貌观察和元素分布的EDS分析.结果表明,随放电电压提高,MPJ性质由机械连接向冶金连接转变.在放电电压为5.5 kV,径向间隙为1.5......
toughness of the weldments.It seems that using ER309L and ER316L electrodes can provide a good combination between the mechanical and metallurgical properties of the joint in AISI 304L/St37 dissimilar welding...Dissimilar Joining of AISI 304L/St37 Steels by TIG Welding ProcessA.R.Khalifeh1,A.Dehghan1,E.Hajjari21. Department of Materials Science and Engineering,School of Engineering,Shiraz University2......
严重,在焊核和铝合金母材的边界存在搅拌头磨损后脱落的颗粒. 关键词:钛合金;铝合金;异种合金;结构;搅拌摩擦焊;显微组织 中图分类号:TG 456.9 文献标志码:A Microstructure of friction stir welding joint between titanium and aluminum dissimilar... spectroscopy (EDS). The results show that,in the welded joint, the interface between titanium alloy base metal and nugget is rough and uneven, and there are bright particles on the boundary......
of the dissimilar explosive clads is higher than that of the weaker parent metal (Al 5052). The pressure developed at the collision point is closer to the analytical expression (Eq. (9)), which increases... with the joint strength higher than the weaker parent metal. 3) The experimental conditions located closer to the lower boundary of the weldability window produce a smooth and wavy interfacial......
, in the selection of filler material for welding of dissimilar materials, the mechanical and corrosion properties of the joint should be at least comparable to the metal that have lower properties.... Key words: gas tungsten arc welding; CP-copper; 304 stainless steel; dissimilar joint; microstructure; mechanical properties 1 Introduction Joints of dissimilar metals are commonly used in different......
reduce the mass of the transport tool while promise the safety. Among various aluminum/steel dissimilar metal connection processes, explosive welding [1], friction stir welding [2] and other processes show... of the aluminum/steel interfaces during the welding process, thereby improving the mechanical properties of the welded joint [14]. Therefore, in this work the weldability of aluminum/steel dissimilar metals......
of intermetallics to metals has been investigated widely. Gale et al[12, 13] joined NiAl to Ni with Ni-Si-B insert metal respectively. Microstructural development in NiAl/Ni-Si-B/Ni joint showed... as that of the phases detected in the NiAl/Cu/Ni joint, an analogical examination was made to clarify the interface development and mechanical property of the dissimilar material joints by Gale and Abdo[15]. As one......
10Cr–1Mo steel multi-layer welded joint is determined by the fine-grain zones of the weld metal adjacent to the fusion line during the long-term creep test at 620 °C. The microstructures of multi-layer...Characterization of Multi-layer Weld Metal and Creep–Rupture Behavior of Modified 10Cr–1Mo Welded JointChang-Zhen Zhang,Chen-Dong Shao,Hai-Chao Cui,Hua-Li Xu,Feng-Gui LuShanghai Key Laboratory......
流为110 A时钛/铝焊接接头典型试样外观形貌 Fig. 2 Typical weld appearances of Ti/Al dissimilar alloy welding joint at welding current of 110 A 在整个焊接过程中,不同焊接电流电弧产生的热效应并不相同,而焊接材料在不同热效应作用下会产生不同程度熔化现象及冶金反应,所以,可以通过调整焊接... morphologies of Ti/Al dissimilar alloy welding joints made at different welding currents 图4 焊接电流为110 A时钛/铝焊接接头中焊缝及铝侧界面的显微组织 Fig. 4 Microstructures of Ti/Al dissimilar alloy welding joint at welded......