Effect of post-heat treatment on microstructure and mechanical properties of laser welded Al-Cu-Mg alloy

Effect of post-heat treatment on microstructure and mechanical properties of laser welded Al-Cu-Mg alloy Full article

Journal

Journal of Manufacturing Processes
ISSN: 1526-6125

Output data

Year: 2021, Volume: 64, Pages: 620-632 Pages count : 13 DOI: 10.1016/j.jmapro.2021.02.008

Tags

Aluminum alloy; Laser welding; Structural and phase analysis; Synchrotron radiation

Authors

Malikov Alexander ¹ , Orishich Anatoly ¹ , Vitoshkin Igor ¹ , Karpov Evgeniy ² , Ancharov Alexei ^3,4

Affiliations

1	Khristianovich Institute of Theoretical and Applied Mechanics Siberian Branch Russian Academy of Sciences
2	Lavrentyev Institute of Hydrodynamics Siberian Branch Russian Academy of Sciences
3	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch Russian Academy of Sciences
4	Budker Institute of Nuclear Physics of Siberian Branch Russian Academy of Sciences

Funding (2)

1	Министерство науки и высшего образования Российской Федерации	FWGG-2021-0012
2	Министерство науки и высшего образования Российской Федерации	075-15-2020-781

A new approach was developed to improve strength of Al-Cu-Mg alloy laser welded joints that typically within 61–90 % of that of the base metal due to a change in the microstructure and phase composition of the weld one. This result was achieved by optimization of post weld heat treatment (PWHT) included quenching and subsequent artificial aging. For the first time, the spatial distribution and evolution of the phase composition were studied at all PWHT stages using high-resolution scanning electron microscopy and synchrotron X-ray analysis. It was found that the Al-Cu-Mg solid solution was homogenized, as well as the S(Al2CuMg) strengthening and (partly) θ(Al2Cu) phases were formed. After PWHT, ultimate tensile strength was 428 MPa, yield strength was 302 MPa, and elongation was 19.6 %, which were 99 %, 98 % and 95 %, respectively, of those of the base metal.

Malikov A. , Orishich A. , Vitoshkin I. , Karpov E. , Ancharov A.
Effect of post-heat treatment on microstructure and mechanical properties of laser welded Al-Cu-Mg alloy
Journal of Manufacturing Processes. 2021. V.64. P.620-632. DOI: 10.1016/j.jmapro.2021.02.008 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000642059100003
Scopus:	2-s2.0-85101260383
Elibrary:	46754085
OpenAlex:	W3132509514

DB	Citing
Scopus	19
OpenAlex	19
Elibrary	19
Web of science	14