Influence of accumulative roll bonding on microstructure and mechanical properties of LA103Z Mg-Li alloy

被引：0

作者：

Zhang, Yang ^{[1
]}

Wang, Haonan ^{[1
]}

Sun, Shunping ^{[1
]}

Chen, Xiaoyang ^{[2
]}

机构：

[1] Jiangsu Univ Technol, Sch Mat Engn, Changzhou 213001, Peoples R China

[2] Jiangsu Univ Technol, Sch Mech Engn, Changzhou 213001, Peoples R China

来源：

VACUUM | 2025年 / 238卷

关键词：

Accumulative roll bonding; Mg-Li alloy; Microstructure; Mechanical properties; AS-CAST; STRENGTH; EVOLUTION;

D O I：

10.1016/j.vacuum.2025.114293

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The limited strength of Mg-Li alloys represents a significant constraint on their extensive industrial utilization. This study demonstrates that a four-layer accumulative roll bonding (ARB) process effectively enhances the mechanical properties of Mg-10Li-3Al-3Zn (LA103Z) alloy. Microstructural analysis reveals that progressive ARB processes induce substantial morphological alterations, including the bending and fragmentation of the continuous banded alpha-Mg phase, remarkable refinement of beta-Li grains, and homogeneous precipitation of fine AlLi particles. The mechanical evaluation indicates a non-monotonic relationship between tensile strength and ARB processing stages, with the sample after two-pass ARB process exhibiting maximum tensile strength. The enhancement in strength is attributed to the grain refinement and strain hardening of alpha-Mg phase, grain refinement of beta-Li phase and disperse intermetallic phases, and alpha-Mg phase is a major contributor to strength.

引用

页数：7

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