Solid state joining of aluminum, titanium and their hybrids by ultrasonic torsion welding
Solid state joining of aluminum, titanium and their hybrids by ultrasonic torsion welding
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DOI：
10.1002/mawe.201400355
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发表时间：
2014-12
影响因子：
1.1
通讯作者：
Jens Magin;F. Balle
中科院分区：
文献类型：
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作者：
Jens Magin;F. Balle
研究了铝AA1199（Al4N）和1级纯钛的轻金属混合接头通过超声扭转焊接技术的固态连接。在焊接实验之前，材料在初始状态下进行了彻底的表征，并开发了表面预处理，以提高单个实验之间的再现性和可比性。在系统方面，开发了一种针对单个搭接接头试样几何形状设计的夹紧装置和一种用于钛作为上连接伙伴的接头的专用焊接工具。采用统计试验方法确定了轻金属超声扭转焊接的最佳工艺参数。在焊接过程中，测量了相关性能，如温度和超声振荡。然后在拉伸剪切载荷下对接头进行测试。详细的光学，扫描电子显微镜和透射电子显微镜的连接区以及断口分析进行了描述的结合机制。
Solid state joining by the ultrasonic torsion welding technology has been investigated for light metal hybrid joints of aluminum AA1199 (Al4N) and cp‐titanium grade 1. Before the welding experiments the materials were thoroughly characterized in the initial state and a surface pre‐treatment was developed to increase reproducibility and comparability between individual experiments. On the system side a clamping device designed for the specimen geometry of the single overlap joint and a special welding tool for joints with titanium as upper joining partner were developed. Statistical test methods were used to determine optimized process parameters for ultrasonic torsion welding of the light metals. During the welding process the relevant properties like temperatures and ultrasonic oscillations were measured. Afterwards the joints were tested under tensile shear loading. Detailed light, scanning electron and transmission electron microscopy of the joining zone as well as fracture surface analysis were carried out to describe the bonding mechanisms.