Microstructures and Mechanical Properties of Regular and Titanium Powder Filled Fibre Laser Lap Welded Dual-phase (DP) Steel

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成果类型：

期刊论文

作者：

Yin, L-R*;Wu, B-Y;Qu, H.;Zhang, J.

通讯作者：

Yin, L-R

作者机构：

[Qu, H.; Yin, L-R; Wu, B-Y] Changsha Univ Sci & Technol, Sch Automot & Mech Engn, Changsha 410114, Hunan, Peoples R China.

[Zhang, J.] Changsha Univ Sci & Technol, Hunan Prov Key Lab Intelligent Mfg Technol High P, Changsha 410114, Hunan, Peoples R China.

通讯机构：

[Yin, L-R] C

Changsha Univ Sci & Technol, Sch Automot & Mech Engn, Changsha 410114, Hunan, Peoples R China.

语种：

英文

关键词：

Dual phase steel;Ductile fracture;Fiber lasers;Hardness;Martensite;Mechanical properties;Microstructure;Morphology;Shear strength;Soldered joints;Steel fibers;Welded steel structures;Welds;Yield stress;DP590;Laser lap welding;Microstructures and mechanical properties;Tempered martensite;Titanium powders;Welding joints;Welding parameters;Welding specimens;Welding

期刊：

Lasers in Engineering

ISSN：

0898-1507

年：

2019

卷：

期：

4-6

页码：

341-353

基金类别：

This work has been financially supported by the National Natural Science Foundation of China (No. 51705034), the Natural Science Foundation of Hunan Province (No. 2018JJ3548) and the Innovation Platform Foundation of Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle of Hunan Provincial Department of Education (17K003).

机构署名：

本校为第一且通讯机构

院系归属：

汽车与机械工程学院

摘要：

To study the microstructures and mechanical properties of the welded joints of a dual-phase (DP) steel after laser lap welding, we performed the laser lap welding and laser powder filling with titanium powder lap welding of DP590 steel using a fiber laser with optimized welding parameters. The experimental results show that the microstructures of weld seam region of DP590 steel are mainly composed of martensite. There exists a softening zone in the weld joints, which is mainly originated from the generation of tempered martensite due to the the...

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Microstructures and Mechanical Properties of Regular and Titanium Powder Filled Fibre Laser Lap Welded Dual-phase (DP) Steel

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