Zr基非晶夹层对Al/TA1异种金属电子束焊接头组织和性能的影响

doi:10.11896/cldb.21100079

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Abstract The main factors affecting the strength of titanium/aluminum dissimilar metal EBW are the type, distribution and thickness of brittle Ti-Al intermetallic compounds continuously distributed at the interface. This work focused on the EBW of TA1 titanium alloy and industrial high purity Al. The Zr₅₂Cu₃₂Ni₆Al₁₀ amorphous strip with the thickness of 40—45 μm was used as the preset interlayer. The effect of the addition of interlayer material on the microstructure and properties of the weldments were analyzed. The results show that the weld structure of Al/TA1 weldments without interlayer is all composed of Ti-Al IMCs. The thickness of the IMCs layer is 1—1.5 mm. The tensile strength of the welded joint is only 40.5 MPa, and the fracture mode is brittle fracture. However, after introducing Zr-based metallic glass interlayer, a continuous IMCs layer with the thickness of 3—5 μm is formed on the TA1 side. On the Al side, there are only dispersed IMCs, but no continuous reaction layer is generated in the melting zone. The tensile strength of the weldment is 90.9 MPa, reaching about 94% of the strength of Al base metal. The tensile fracture is located near the Al side, which is near the weld zone, and there is obvious necking at the fracture, showing the characteristics of ductile fracture.

Key words： Zr-based amorphous alloy Al/TA1 dissimilar metal electron beam welding microstructure mechanical property

Published: 25 April 2023 Online: 2023-04-24

CLC number:

TG456.3

Fund:National Natural Science Foundation of China (51601121), Liaoning Natural Science Foundation (2020-MS-238), and the Xing Liao Talents Plan of Liaoning Province (XLYC2007165).

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	Articles by authors
	CHEN Lei
	XU Rongzheng
	ZHANG Li
	LIU Yaguang
	LI Zhengkun
	ZHANG Haifeng
	ZHANG Bo

Cite this article:

CHEN Lei,XU Rongzheng,ZHANG Li, et al. Effects of Zr-based Amorphous Alloy Interlayer on Microstructure and Properties of Al/TA1 Dissimilar Metals Electron Beam Welded Joints[J]. Materials Reports, 2023, 37(8): 21100079-4.

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http://www.mater-rep.com/EN/10.11896/cldb.21100079 OR http://www.mater-rep.com/EN/Y2023/V37/I8/21100079

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