[1]于铭迪,应韬,王静雅,等.基于微结构调控的高性能镁合金设计[J].中国材料进展,2025,44(08):701-709.[doi:10.7502/j.issn.1674-3962.202409018]
　YU Mingdi,YING Tao,WANG Jingya,et al.Design of High-Performance Magnesium Alloys by Tunning Microstructure[J].MATERIALS CHINA,2025,44(08):701-709.[doi:10.7502/j.issn.1674-3962.202409018]
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基于微结构调控的高性能镁合金设计()

中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
44
期数:
2025年08
页码:
701-709
栏目:
出版日期:
2025-08-29

文章信息/Info

Title:
Design of High-Performance Magnesium Alloys by Tunning Microstructure
文章编号:
1674-3962(2025)08-0701-09
作者:
于铭迪; 应韬; 王静雅; 曾小勤
1.上海交通大学 轻合金精密成型国家工程研究中心，上海 200240 2.上海交通大学 金属基复合材料全国重点实验室，上海 200240
Author(s):
YU Mingdi;  YING Tao;  WANG Jingya;  ZENG Xiaoqin
1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University,Shanghai 200240, China 2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
关键词:
镁合金; 强韧化; 塑性变形; 腐蚀行为; 微结构
Keywords:
magnesium alloys;  synergy of strength and ductility;  plastic deformation; corrosion behavior;  microstructure
分类号:
TG146.22
DOI:
10.7502/j.issn.1674-3962.202409018
文献标志码:
A
摘要:
作为最轻的金属结构材料，块体高强镁合金材料的抗拉强度已突破700 MPa，高塑性镁合金的断裂延伸率可达35%，在航空航天、电子通讯、国防装备等领域展现出优异的应用前景。但是，镁合金相较于普遍应用的金属结构材料，如钢铁和铝合金等，仍旧存在很大的力学性能差距。如何同时保持高强度和高塑性是镁合金研究领域中的关键难题。此外，镁合金也极易腐蚀，提高镁合金强度通常会恶化耐蚀性能。如何兼具高强度与高耐蚀特性也是镁合金研究领域面临的重大挑战。归纳总结了镁合金复合强化、协同增塑及耐腐蚀行为的研究进展，重点介绍了基于微结构调控的镁合金强塑协同机制及高强耐蚀镁合金设计原理。引入有效阻碍位错运动的析出相、高密度晶界等微结构能够显著提升镁合金强度；促进镁合金中多种类塑性变形载体参与变形是改善镁合金塑性的关键途径；抑制局部微电偶腐蚀、提高表面钝化膜的保护性能够有效提高镁合金耐腐蚀性能。通过镁合金中微结构的协调及设计有望突破镁合金高强度、高塑性和良好耐蚀性能不可兼得的瓶颈。
Abstract:
As the lightest metallic structural material, the ultimate tensile strength of bulk high-strength magnesium (Mg) alloy has exceeded 700 MPa, and the elongation of high-ductility Mg alloys can be up to 35%, Mg alloys show excellent application prospects in aerospace, electronic communications,defence equipment and other fields. However, Mg alloys are still far away from the commonly applied metallic materials, such as steel and aluminium (Al) alloys, with a large gap in mechanical properties. How to maintain high strength and high ductility at the same time is a challenge in the field of Mg alloys. In addition, pure Mg and Mg alloys are also highly susceptible to corrosion, and increasing the strength of Mg alloys usually deteriorates the corrosion resistance. How to balance high strength and high corrosion resistance is also a major challenge of Mg alloys. This work summarizes the research progress of plastic deformation mechanisms and corrosion-resistant behaviours, and focuses on the synergistic mechanism of Mg alloys strength and ductility based on microstructure regulation and the design principle of high-strength-corrosion-resistant Mg alloys. The introduction of microstructures such as precipitated phases and high-density grain boundaries, which effectively impede dislocations motion, can significantly enhance the strength of Mg alloys; the promotion of multiple plastic deformation carriers in Mg alloys is a key method to improve the ductility of Mg alloys; and the suppression of local microelectrodynamic coupling corrosion and the protective property improvement of passive film can effectively improve the corrosionresistant properties of Mg alloys. The design of microstructures is expected to break through the bottleneck of Mg alloys with high strength, superior ductility and good corrosion resistance.

备注/Memo

备注/Memo:
收稿日期：2024-09-18修回日期：2025-01-03 基金项目：国家自然科学基金资助项目（52425101，52471012，52127801,52271008） 第一作者：于铭迪，女，1998年生，博士研究生 通讯作者：曾小勤，男，1974年生，教授，博士生导师， Email: xqzeng@sjtu.edu.cn
更新日期/Last Update: 2025-07-28