超轻体心立方(BCC)结构镁锂合金强化研究进展
Research Progress in Strengthening of Ultralight Body-centered Cubic(BCC)Structured Mg-Li Alloys
陈小亮 1杨波 1顾亦诚 1孙月花 1任建 1宋广生 1汪家庆 2陈建贤2
作者信息
- 1. 安徽工业大学材料科学与工程学院,马鞍山 243000
- 2. 华孚科技股份有限公司,昆山 215300
- 折叠
摘要
Mg-Li合金具有低密度、高比强度和比刚度、良好的成形性等优异性能,在航空航天、电子通讯等领域有着广阔的应用前景.当Li加入量大于10.3%(质量分数)时,Mg-Li合金呈单相体心立方(BCC)结构,是目前最轻的低密度金属结构材料之一,但由于Li含量较高,强度低,限制了其在工程领域的应用.综述了国内外BCC结构Mg-Li合金强化方法和强化机理的研究进展,重点论述了纳米析出相强化后合金成形性低的问题,最后指出了目前存在的问题并对发展方向进行展望.
Abstract
Mg-Li alloy has a broad application prospect in aerospace,thin labtop and other fields due to its excellent properties such as low density,high specific strength and stiffness,good formability.With Li addition over 10.3%,the Mg-Li alloy becomes a single-phase body-centered cubic(BCC)structure,which is the lightest low-density material.However,due to the high content of Li,the strength is very low,which limits application in the engineering field.The research progress in strengthening methods and mechanisms of BCC structured Mg-Li alloy at home and abroad was reviewed,and the low formability of nano-precipitated phase after strengthening were emphatically described.Finally,the existing problems were pointed out and the future development direction was prospected.
关键词
镁锂合金/超轻材料/合金化/变形强化/复合强化Key words
Mg-Li Alloy/Ultra-light Materials/Alloying/Deformation Strengthening/Compound Strengthening引用本文复制引用
基金项目
横向基金(2020H3-7)
安徽省自然科学基金资助项目(2208085QE124)
出版年
2024
NETL
NSTL
万方数据