Enhancing explosive weldability of thick precipitate-hardened alloys. (May 2022)

• Record Type: Journal Article
• Authors: Wu, Yake; Wu, Rong; Zhang, Mingyu; Tan, Sai; Lu, Junyong; Jiang, Feng
• Is Part Of: Journal of manufacturing processes. Volume 77(2022)
• Page Start: 339
• Page End: 347
• Publication Date: 2022-05
• Subjects: Explosive welding -- Weldability -- Precipitate-hardened alloy -- Alloy state -- Welding interface -- Property; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2022.03.041
• Languages: English
• ISSNs: 1526-6125

Abstract

Abstract: Explosive welding of high-strength precipitate-hardened alloys in large thickness was very challenging but was increasingly desired with the continuous development of high-end equipment. An innovative strategy, which was previously proposed to achieve joining at the solid-solutioned state at first and improve the composite properties by later thermal treatment, was validated here using a Cu-Ni-Si-Cr alloy as a model material. Under the same welding condition, the composite welded at the solid-solutioned state exhibited a larger wave amplitude than that joined at the peak-aged state, an evident proof of better weldability. Further numerical analysis indicated that the enhanced weldability of the solid-solutioned alloy was closely related with its lower deformation resistance. The composite joined at the solid-solutioned state achieved a slightly lower peak hardness and yield strength than the counterpart for the thermally weakened deformation hardening effects and the more interfacial defects, while the electrical conductivity of them was comparable.