激光技术, 2017, 41 (6): 816, 网络出版: 2017-11-27   

钛合金-不锈钢异种材料激光焊接工艺研究

Study on laser welding process of titanium alloy and stainless steel dissimilar materials
作者单位
青岛理工大学 机械工程学院, 青岛 266000
摘要
为了探究钛合金-不锈钢异种金属焊接的特殊性, 更好地提升两金属间的焊接性能, 采用在钛合金与不锈钢之间加入填充层黄铜进行焊接的新方法, 进行了理论分析和实验验证。应用ANSYS有限元分析软件分析得出填充层-黄铜的合理厚度应在0.5mm~0.7mm左右, 并基于仿真结果对填充层黄铜厚度为0.5mm~0.7mm的钛钢异种金属焊件进行焊接实验, 对焊接试样进行硬度、抗拉性测试及扫描电镜观察。结果表明, 填充层黄铜的厚度为0.6mm时, 钛合金-不锈钢异种金属激光焊接试样的焊缝形貌和力学性能较好。
Abstract
In order to explore the welding particularity of titanium alloy and stainless steel dissimilar metal and improve their welding performance, a new welding method of filling layer brass between titanium alloy and stainless steel was adopted. ANSYS finite element analysis software was applied. After theoretical analysis and experimental verification, it was concluded that the reasonable thickness of filling layer brass should be about 0.5mm~0.7mm. And based on simulation results, titanium steel dissimilar metal welding with the filling brass layer of thickness 0.5mm~0.7mm was used in welding experiment. Hardness, tensile test and scanning electron microscope (SEM) observation were carried out on the welded specimens. The results show that, when the thickness of the filler layer brass is 0.6mm, laser welding samples of Ti alloy and stainless steel has good weld morphology and mechanical properties.

王玉玲, 张翔宇, 胡小红. 钛合金-不锈钢异种材料激光焊接工艺研究[J]. 激光技术, 2017, 41(6): 816. WANG Yuling, ZHANG Xiangyu, HU Xiaohong. Study on laser welding process of titanium alloy and stainless steel dissimilar materials[J]. Laser Technology, 2017, 41(6): 816.

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