镁铋二元合金的室温变形行为研究

doi:10.11896/cldb.25010137

材料导报

2026, Vol. 40

Issue (1): 25010137-6 https://doi.org/10.11896/cldb.25010137

金属与金属基复合材料

镁铋二元合金的室温变形行为研究

万宇辉¹, 石凤健^2,*, 霍庆欢³, 宋宏权⁴, 苏航^5,*, 陆青松⁶, 匡杰¹, 刘刚¹, 张金钰¹, 孙军¹

1 西安交通大学金属材料强度全国重点实验室,西安 710049
2 江苏科技大学材料科学与工程学院,江苏镇江 212003
3 中南大学材料科学与工程学院,长沙 410083
4 周口师范学院物理与电信工程学院,河南周口 466001
5 中国石油集团工程材料研究院有限公司,西安 710077
6 浙江银轮机械股份有限公司,浙江天台 317200

Study on Room Temperature Deformation Behavior of Magnesium-Bismuth Binary Alloy

WAN Yuhui¹, SHI Fengjian^2,*, HUO Qinghuan³, SONG Hongquan⁴, SU Hang^5,*, LU Qingsong⁶, KUANG Jie¹, LIU Gang¹, ZHANG Jinyu¹, SUN Jun¹

1 State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
2 School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China
3 School of Materials Science and Engineering, Central South University, Changsha 410083, China
4 School of Physical and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466001, Henan, China
5 CNPC Tubular Goods Research Institute, Xi'an 710077, China
6 Zhejiang Yinlun Machinery Co., Ltd., Tiantai 317200, Zhejiang, China

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摘要由于第二相具有较高的热稳定性,Mg-Bi合金近年来在镁合金研究领域引起了一些关注。本工作使用基于扫描电镜(SEM)和电子背散射衍射(EBSD)的准原位拉伸技术,结合晶体塑性有限元模拟和第一性原理计算探索了Mg-Bi二元合金的室温塑性变形行为。结果表明,在具有接近的晶粒尺寸和织构的情况下,与纯Mg相比,Mg-Bi合金展现出更为优异的室温力学性能匹配。分析显示这主要源于元素Bi的加入降低了材料中非基面滑移系的广义层错能,提高了材料中锥面滑移的活跃程度。这一变形机制上的改变使得Mg-Bi二元合金在相较于纯镁强度提升1.4倍的同时仍然能够保持几乎相同的延伸率。

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	万宇辉
	石凤健
	霍庆欢
	宋宏权
	苏航
	陆青松
	匡杰
	刘刚
	张金钰
	孙军

关键词: Mg-Bi合金变形机制滑移迹线广义层错能

Abstract: Due to the high thermal stability of its second phase, Mg-Bi alloy have attracted some attention in the field of magnesium alloys research in recent years. In this work, quasi-in-situ tensile tests based on scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) were conducted, combined with crystal plasticity finite element simulation and first-principles calculations to explore the room-temperature plastic deformation behavior of Mg-Bi binary alloy. The results show that, under the condition of similar grain size and texture, Mg-Bi alloy exhibits superior room-temperature mechanical properties matching compared to pure Mg. Analysis indicate it is mainly due to the addition of element Bi, which reduce the generalized stacking fault energy of non-basal slip systems in the material and increase the activity of prismatic slip. This change causes the Mg-Bi alloy's strength increasing by 1.4 times compared to pure Mg's while maintaining almost the same elongation rate.

Key words: Mg-Bi alloy deformation mechanism slip trace generalized fault energy

出版日期: 2026-01-10 发布日期: 2026-01-09

ZTFLH:

TG146.2

基金资助: 国家自然科学基金(52371119)

通讯作者: * 石凤健,江苏科技大学材料科学与工程学院副教授、硕士研究生导师。目前主要从事材料先进成形技术、镁合金塑性加工等方面的研究。shifengjian@126.com
苏航,中国石油天然气集团公司管材研究所高级工程师。长期从事金属材料强韧化、金属材料的氢脆及机器学习在金属材料表征方面的研究。suhang12@cnpc.com.cn

作者简介: 万宇辉,西安交通大学材料科学与工程学院硕士研究生。目前主要研究领域为金属材料塑性加工与强韧化。

引用本文:

万宇辉, 石凤健, 霍庆欢, 宋宏权, 苏航, 陆青松, 匡杰, 刘刚, 张金钰, 孙军. 镁铋二元合金的室温变形行为研究[J]. 材料导报, 2026, 40(1): 25010137-6.
WAN Yuhui. Study on Room Temperature Deformation Behavior of Magnesium-Bismuth Binary Alloy. Materials Reports, 2026, 40(1): 25010137-6.

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https://www.mater-rep.com/CN/10.11896/cldb.25010137 或 https://www.mater-rep.com/CN/Y2026/V40/I1/25010137

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