Study on Microstructure and Mechanical Properties of Aluminum-Copper Dissimilar Metals Joints by Nanosecond Laser Spiral Welding

被引：12

作者：

Cheng, Qiran ^{[1
,2
]}

Zhang, Peilei ^{[1
,2
]}

Shi, Haichuan ^{[1
,2
]}

Yu, Zhishui ^{[1
,2
]}

机构：

[1] Songjiang Campus Shanghai Univ Engn Sci, Sch Mat Engn, Room 3109,333 Long Teng Rd, Shanghai 201620, Peoples R China

[2] Shanghai Collaborat Innovat Ctr Laser Adv Mfg Tec, Shanghai 201620, Peoples R China

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2022年 / 75卷 / 10期

关键词：

Pulsed nanosecond laser; Dissimilar metals; Laser welding; Nanoindentation; FRACTURE;

D O I：

10.1007/s12666-022-02623-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Aluminum-copper dissimilar metals were successfully welded by nanosecond laser and optical galvanometer scanning. The joint formation, microstructure characteristics, and mechanical properties under different lap forms were studied. The results showed that when the joint was Al (upper)/Cu (under), the metal on the aluminum side melted completely. Part of the aluminum intruded into the copper base material to form a "V"-shaped weld. When the joint was Cu (upper)/Al(under), the weld consisted of multiple "nail"-shaped welds. In the two overlapping forms, the welds were mainly composed of four structures: gamma(2)-Cu9Al4 phase region, hypereutectic region, eutectic region, and hypoeutectic region. The weld penetration formed by the Cu/Al joint was greater than that of the Al/Cu weld.

引用

页码：2517 / 2528

页数：12

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