Metallurgical effects and distortions in laser welding of thin sheet steels with variations in strength

被引：3

作者：

Fahlstrom, Karl ^{[1
,2
]}

Andersson, Oscar ^{[3
,4
]}

Karlsson, Leif ^{[2
]}

Svensson, Lars-Erik ^{[2
]}

机构：

[1] Swerea KIMAB, Kista, Sweden

[2] Univ West, Trollhattan, Sweden

[3] Volvo Cars, Torslanda, Sweden

[4] KTH, Stockholm, Sweden

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2017年 / 22卷 / 07期

关键词：

Laser welding; high strength steel; distortion; metallurgy; hardness; automotive; PHASE-TRANSFORMATION; RESIDUAL-STRESS;

D O I：

10.1080/13621718.2016.1275483

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Geometrical distortions occur while welding, but the understanding of how and why they occur and how to control them is limited. The relation between the weld width, weld metal volume, total energy input, width of hard zone and distortions when laser welding three different thin sheet steels with varying strength has therefore been studied. Weld metal volume and total energy input show a good correlation with distortion for one steel at a time. The best correlation with the when including all three steel grades was the width of the hard zone composed of weld metal and the martensitic area in the heat affected zone.

引用

页码：573 / 579

页数：7

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