激光清洗在铝合金焊接后处理中的应用。

Application of laser cleaning in postwelding treatment of aluminum alloy.

作者信息

Zhu Guodong, Wang Shouren, Zhang Mingyuan, Yang Xuefeng, Liu Wentao, Wang Gaoqi

出版信息

Appl Opt. 2020 Dec 1;59(34):10967-10972. doi: 10.1364/AO.406171.

PMID:33361919

Abstract

This paper presents a new method of postweld treatment. The 5154 aluminum alloy was cleaned by Nd:YAG laser after welding. The surface morphology, energy spectrum, friction and wear properties, hardness, and residual stress of the welded joint at different cleaning speeds were studied. The results show that an Nd:YAG laser can effectively remove the welding slag and eliminate the pores in the weld under a certain cleaning speed. When the cleaning speed is in the range of 5.2-20.7 mm/s, laser cleaning can improve the heat-affected zone's tribological characteristics. Laser cleaning can eliminate the residual stress of the welded joint and improve the welding joint's strength, which provides a reference for laser cleaning instead of traditional heat treatment.

摘要

本文提出了一种新的焊后处理方法。对5154铝合金焊接件进行了Nd:YAG激光清洗。研究了不同清洗速度下焊接接头的表面形貌、能谱、摩擦磨损性能、硬度和残余应力。结果表明，Nd:YAG激光在一定清洗速度下能有效去除焊接熔渣并消除焊缝气孔。当清洗速度在5.2-20.7mm/s范围内时，激光清洗可改善热影响区的摩擦学特性。激光清洗可消除焊接接头的残余应力并提高焊接接头强度，为激光清洗替代传统热处理提供了参考。