Laser welding of additively manufactured AlSi10Mg and conventionally manufactured Al6061 alloy

IF 2.4 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Welding in the World Pub Date : 2024-05-31 DOI:10.1007/s40194-024-01794-6

A. K. Vishwakarma, D. Debnath, M. D. Pawar, V. Muthiyan, B. Gautam, R. Khatirkar, Himanshu Shekhar, V. D. Hiwarkar

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Abstract

In the present study, laser welding of additively manufactured AlSi10Mg was undertaken with AlSi10Mg (similar) and Al6061 (dissimilar) alloy. The aim was to understand the laser weldability of selective laser melting (SLM)-printed AlSi10Mg alloy without filler material. The similar and dissimilar type of butt joints were prepared, and it is found that dissimilar weldments had better mechanical properties than similar weldments. The heat treatment on these welded plates also improved their mechanical properties. The precipitation of Mg₂Si particles was evident from the XRD and TEM analysis. The as-built cellular structure was broken due to heat treatment and also near the weld zone in the as-welded plate. It was observed that microhardness increased with increase in Mg₂Si content after the heat treatment process. The strength of welded samples was less than that of the base metals. The heat treatment results in ~ 20% increase in the tensile strength of the welded samples with significant increase in elongation.

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激光焊接快速成型的 AlSi10Mg 和传统制造的 Al6061 合金

在本研究中，对添加式制造的 AlSi10Mg 与 AlSi10Mg（相似）和 Al6061（不相似）合金进行了激光焊接。目的是了解选择性激光熔化（SLM）打印的 AlSi10Mg 合金在无填充材料情况下的激光焊接性。研究人员制备了相似和不相似类型的对接接头，发现不相似的焊接件比相似的焊接件具有更好的机械性能。对这些焊接板材的热处理也改善了它们的机械性能。从 XRD 和 TEM 分析中可以明显看出 Mg2Si 颗粒的析出。由于热处理的原因，焊接后的板材在焊接区附近的蜂窝结构被破坏。据观察，热处理后，显微硬度随着 Mg2Si 含量的增加而增加。焊接样品的强度低于贱金属。热处理后，焊接样品的抗拉强度提高了约 20%，伸长率显著增加。

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来源期刊

Welding in the World METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

4.20

自引率

14.30%

发文量

181

审稿时长

6-12 weeks

期刊介绍： The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.