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Microstructural and mechanical recovery of overburned Mg-Gd-Y-Zn-Zr alloys via controlled thermal reprocessing

Year: 2026
Type: article
Abstract: This study develops a controlled furnace-cooling method to repair overburned Mg-Gd-Y-Zn-Zr alloys, traditionally considered irreversibly damaged. Slow cooling (0.7℃/min) enables molten grain boundaries to re-solidify into LPSO and RE-rich phases, eliminating defects. The restored alloy outperforms non-overburned counterparts in strength and ductility after extrusion. This breakthrough challenges the irreversibility of overburning and offers a practical industrial strategy to reduce material waste while advancing lightweight magnesium alloys for high-performance applications.
DOI: 10.1016/j.nxmate.2025.101545
Authors: Dongjie Chen, Weiwei He, Minglong Ma, Zhaoqian Sun, Yongjun Li, Yiwei Li, Shengxing Zhi, Yang Yang, Ligong Gao, Hongzhou Zhang
Institutions: Zhumadian Central Hospital, Huanghuai University, General Research Institute for Nonferrous Metals (China), State Key Laboratory of Nonferrous Metals and Processes, Central South University, State Key Laboratory of Powder Metallurgy
Language: English
Subfield: Biomaterials
Open Access status: gold
Estimated APC paid: $1,280
OpenAlex ID: W7140859336
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Cites: 13
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