摘要
镁锂合金是最轻的金属结构材料,由于其存在时效软化现象,极大限制了推广应用。综述了近年来国内外对镁锂合金时效软化机理的研究,如时效析出相的长大、聚集和粗化,以及析出的亚稳硬化相在随后时效进程中转变为稳定的软化相等,讨论了能有效抑制时效软化的途径,最后对镁锂合金的时效行为研究进行了展望。
Magnesium-lithium alloy is the lightest metal structural material,which exhibits promising potential in weight reduction of aircrafts.However,the phenomenon of aging softening observed strongly retards its further application.The mechanisms of age-softening were reviewed,including the growth,segregation and coarsening of matrix precipitates and the transformation from metastable phases to equilibrium phases with prolonged aging time.Then,several effective methods were expounded which could inhibit the age-softening.Finally,prospect for the investigations on aging behavior of Mg-Li alloy was described.
作者
高占奎
王先飞
刘文才
吴国华
肖旅
李中权
丁文江
Gao Zhankui;Wang Xianfei;Liu Wencai;Wu Guohua;Xiao LU;Li Zhongquan;Ding Wenjiang(National Engineering Research Center ofLight Alloy Net Forming,School of Materials Science and Engineering,Shanghai Jiaotong University;Shanghai Spaceflight Precision Machinery Institute;Shanghai Engineering Technology Research Center of Near-Net-Shape Forming for Metallic Materials)
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2018年第11期1198-1203,共6页
Special Casting & Nonferrous Alloys
基金
国家重点研发计划资助项目(2016YFB0301004)
上海航天技术研究院-上海交大航天先进技术联合研究中心资助项目(USCAST2016-18)
上海航天创新基金资助项目(SAST2016048)
国家自然科学基金资助项目(51771115)
关键词
镁锂合金
时效软化
合金化
热处理
塑性变形
Mg-Li Alloy
Aging Softening
Alloying
Heat Treatment
Plastic Deformation
