A novel method of identifying porosity during laser welding of galvanized steels using microhardness pattern matrix

被引：6

作者：

Karganroudi, Sasan Sattarpanah ^{[1
]}

Kemda, Vincent Bleriot Feujofack ^{[1
]}

Barka, Noureddine ^{[1
]}

机构：

[1] Univ Quebec Rimouski, Comp Sci & Engn Dept, Rimouski, PQ, Canada

来源：

MANUFACTURING LETTERS | 2020年 / 25卷

关键词：

Laser welding; Galvanized steel; Micro-indentation hardness test; Porosity; HIGH-STRENGTH STEEL;

D O I：

10.1016/j.mfglet.2020.08.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Galvanized steel welded joints are susceptible to porosities since their protective zinc layer may be evaporated and trapped during welding. In this study, a novel approach of identifying voids and porosities is developed by performing a pattern matrix of micro-indentation hardness tests in the cross-section of welds. The hardness grid is then visualized by 3D contour plots to identify the form and position of porosities. This method is investigated on laser-welded galvanized steel plates with reinforcement in which low hardness measurements in the welding area present voids, porosities, and unexpected gaps between joining and reinforcing plates. (C) 2020 Society of Manufacturing Engineers (SME). Published by Elsevier Ltd. All rights reserved.

引用

页码：98 / 101

页数：4

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