Achieving high strength WE43 alloy with homogeneous&nbsp;corrosion and improved biological properties by high-pressure&nbsp;torsion

Bo DENG, De-chuang ZHANG, Yi-long DAI, Zhi-nan YANG, Yun-cang LI, Cui-e WEN

doi:10.1016/S1003-6326(25)67019-1

Transactions of Nonferrous Metals Society of China >

2026 , Vol. 36 >Issue 4: 1102 - 1119

DOI: https://doi.org/10.1016/S1003-6326(25)67019-1

MATERIALS SCIENCE AND ENGINEERING

Achieving high strength WE43 alloy with homogeneous corrosion and improved biological properties by high-pressure torsion

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^a School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China;

^b National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China;
^c Centre for Additive Manufacturing, School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia

Online published: 2026-05-13

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Abstract

The corrosion resistance, tensile yield strength, elongation, and biocompatibility of the WE43 Mg alloy were significantly improved by high-pressure torsion (HPT) processing. The microstructure of WE43 changed through three distinct stages: deformation strengthening, dynamic recovery, and dynamic recrystallization during HPT. WE43 nanocrystals with an average grain size of (105±5) nm were successfully prepared after 7 or 10 revolutions of HPT processing. The HPT-7R WE43 samples showed the highest yield strength of (330.9±2.2) MPa, the highest tensile strength of (374.2±1.9) MPa, and an elongation of (13.2±1.1)%. The HPT-10R WE43 samples exhibited the lowest degradation rate of (0.401±0.031) mm/a; furthermore, it revealed cell viability greater than that of pure Mg and solution-treated WE43 toward MC3T3-E1 pre-osteoblasts. Overall, the WE43 alloy after HPT processing for 7 or more revolutions demonstrates great potential as a highly desirable bone-implant material.

Key words： WE43 alloy; high-pressure torsion; nanocrystalline; homogenous corrosion; biocompatibility

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Bo DENG, De-chuang ZHANG, Yi-long DAI, Zhi-nan YANG, Yun-cang LI, Cui-e WEN . Achieving high strength WE43 alloy with homogeneous corrosion and improved biological properties by high-pressure torsion[J]. Transactions of Nonferrous Metals Society of China, 2026 , 36(4) : 1102 -1119 . DOI: 10.1016/S1003-6326(25)67019-1

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