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首页> 外文期刊>International Journal of Precision Engineering and Manufacturing >Effects of different Ti content in Zn-30Al filler metals on the microstructure and mechanical properties of Mg-Al butt joints
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Effects of different Ti content in Zn-30Al filler metals on the microstructure and mechanical properties of Mg-Al butt joints

机译：Zn-30Al钎料中不同Ti含量对Mg-Al对接接头组织和力学性能的影响

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摘要

Based on the idea of alloying welding seam, a series of Zn-30Al-xTi filler metal was used to join Mg/Al dissimilar metals by tungsten inert gas welding, where the x was 0, 0.05, 0.1, 0.5, and 1, respectively. The effect of various Ti content on the microstructure and the mechanical property of Mg-Al butt joints was investigated. Results indicated that the fusion zones of the joints were mainly composed of alpha-Al, MgZn2 and Al-Zn eutectics when the Ti content was 0.05, 0.1 and 0.5 wt.%, and Al3Ti compounds could precipitate first and act as nucleuses during solidification process when the Ti content was appropriate. The mechanical property of the weld joints improved consistently to the increasing content of Ti. The optimum average tensile strength of the joints reached 148 MPa when Zn-30Al-0.5Ti was used, but the average tensile strength decreased again when Zn-30Al-1Ti was used.
机译：基于焊缝合金化的思想，采用一系列的Zn-30Al-xTi填充金属通过钨极惰性气体保护焊连接Mg / Al异种金属，其中x分别为0、0.05、0.1、0.5和1。 。研究了各种Ti含量对Mg-Al对接接头组织和力学性能的影响。结果表明，当Ti含量为0.05、0.1和0.5 wt。％时，接头的熔合区主要由α-Al，MgZn2和Al-Zn共晶组成，Al3Ti化合物在凝固过程中首先析出并起核作用。当Ti含量合适时。随着Ti含量的增加，焊接接头的机械性能不断提高。当使用Zn-30Al-0.5Ti时，接头的最佳平均抗拉强度达到148 MPa，但是当使用Zn-30Al-1Ti时，平均抗拉强度再次降低。

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