Excellent strength-ductility balance of fully recrystallized fine-grained Mg-Y-Zn-Ni extrusion alloy with 14H-LPSO lamellas

Wenyu Liu; Wei Liu; Zhuo Song; Yuntao Zhang; Chuan Shuai; Taoze Xie; Hua Hou; Yuhong Zhao

doi:10.1080/21663831.2025.2471961

Materials Research Letters (Mar 2025)

Excellent strength-ductility balance of fully recrystallized fine-grained Mg-Y-Zn-Ni extrusion alloy with 14H-LPSO lamellas

Wenyu Liu,
Wei Liu,
Zhuo Song,
Yuntao Zhang,
Chuan Shuai,
Taoze Xie,
Hua Hou,
Yuhong Zhao

Affiliations

Wenyu Liu: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Wei Liu: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Zhuo Song: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Yuntao Zhang: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Chuan Shuai: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Taoze Xie: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Hua Hou: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China
Yuhong Zhao: School of Materials Science and Engineering, MOE jointly Collaborative Innovation Center for High-performance Al/Mg based Materials, Shanxi Key Laboratory of Intelligent Casting and Advanced Forming for New Materials, North University of China, Taiyuan, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2025.2471961

Abstract

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Simultaneously improving strength and ductility is a challenge for Mg alloys. Herein, we report a strong and ductile Mg90Y4Zn2Ni4 (at. %) extrusion alloy with yield strength of 426 MPa, ultimate tensile strength of 451 MPa and elongation of 25%. Experiment and phase field model show that 14H-LPSO phases refine from blocks to lamellas through cracking, dissolving and kinking during deformation. Moreover, excellent strength-ductility balance is attributed to fully and fine recrystallized grains, dispersed Mg(Ni, Zn)4Y particles and 14H-LPSO lamellas, high-density dislocations and easy mobility of basal slip. These findings provide a valuable reference for preparing high-performance Mg alloys.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

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