INFLUENCE OF QUENCHING AND SUBSEQUENT ARTIFICIAL AGING ON TENSILE STRENGTH OF LASER-WELDED JOINTS OF AL–CU–LI ALLOY

INFLUENCE OF QUENCHING AND SUBSEQUENT ARTIFICIAL AGING ON TENSILE STRENGTH OF LASER-WELDED JOINTS OF AL–CU–LI ALLOY Научная публикация

Журнал

Metals
ISSN: 2075-4701

Вых. Данные

Год: 2023, Том: 13, Номер: 8, Страницы: 1393 Страниц : 1 DOI: 10.3390/met13081393

Авторы

Malikov Alexandr ¹ , Karpov Evgeniy ^1,2 , Kuper Konstantin ^1,3 , Шмаков Александр Николаевич ^1,4

Организации

1	Khristianovich Institute of Theoretical and Applied Mechanics, SB RAS
2	Lavrentyev Institute of Hydrodynamics, SB RAS
3	Budker Institute of Nuclear Physics, SB RAS
4	Boreskov Institute of Catalysis, SB RAS

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации	FWGG-2022-0001
2	Российский научный фонд	23-79-00037

The research aim was to optimize post-weld heat-treatment (PWHT) modes for a laserwelded joint of the Al–Cu–Li alloy and improve their respective strength properties. As a result, the ultimate tensile strength, yield point, and elongation of the joint were enhanced up to 95%, 94%, and 38%, respectively, of those inherent in the base metal. Before and after PWHT, both microstructures and phase compositions have been examined by optical and scanning electron microscopy, as well as synchrotron X-ray diffractometry. In the as-welded metal, the α-Al and T1 (Al2CuLi) phases were found, along with the θ 0 (Al2Cu) and S0 (Al2CuMg) phases localized at the grain boundaries, significantly reducing the mechanical properties of the joint. Upon quenching, the agglomerates dissolved at the grain boundaries, the solid solution was homogenized, and both Guinier–Preston zones and precipitates of the intermediate metastable θ 00 phase were formed. After subsequent optimal artificial aging, the (predominant) hardening θ 0 and (partial) T1 (Al2CuLi) phases were observed in the weld metal, which contributed to the improvement of the strength properties of the joint.

Malikov A. , Karpov E. , Kuper K. , Шмаков А.Н.
INFLUENCE OF QUENCHING AND SUBSEQUENT ARTIFICIAL AGING ON TENSILE STRENGTH OF LASER-WELDED JOINTS OF AL–CU–LI ALLOY
Metals. 2023. Т.13. №8. С.1393. DOI: 10.3390/met13081393 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:001055323300001
Scopus:	2-s2.0-85169119202
РИНЦ:	54654404
OpenAlex:	W4385543185

БД	Цитирований
РИНЦ	1