Improved Post-Weld Heat Treatment for Argon TIG Welded Joint of a New Al – Zn – Mg – Cu Alloy

Liang Zhang; Xiaoyan Li; Zuoren Nie; Hui Huang; Lanqiang Niu

doi:10.1007/s11041-018-0290-6

Improved Post-Weld Heat Treatment for Argon TIG Welded Joint of a New Al – Zn – Mg – Cu Alloy

Autores: Zhang L.¹, Li X.¹, Nie Z.¹, Huang H.¹, Niu L.¹
Afiliações:
1. School of Materials Science and Engineering, Beijing University of Technology
Edição: Volume 60, Nº 5-6 (2018)
Páginas: 399-402
Seção: Article
URL: https://journals.rcsi.science/0026-0673/article/view/236381
DOI: https://doi.org/10.1007/s11041-018-0290-6
ID: 236381

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An argon TIG welded joint of the Al – Zn –Mg – Cu alloy was studied. Based on the hardness and differential scanning calorimetry studies, a post-weld alloy heat treatment regimen has been proposed to ensure a welded joint strength of 622 MPa versus the strength of the base metal of 676 MPa. The post-weld heat treatment provides for a two-stage solid solution treatment (470°C, 90 min + 500°C, 20 min) and artificial aging at 120°C for 24 h.