搅拌摩擦加工调控镁合金组织与耐腐蚀性能的发展现状与趋势  

Recent Developments of Regulating the Microstructure and Corrosion Resistance of Magnesium Alloys by Friction Stir Processing

作　　者：龙飞 陈高强[1] 刘瞿[1] 张弓 张华 史清宇[1] LONG Fei;CHEN Gaoqiang;LIU Qu;ZHANG Gong;ZHANG Hua;SHI Qingyu(State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China;School of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China)

机构地区：[1]清华大学摩擦学国家重点实验室,北京100084 [2]北京石油化工学院机械工程学院,北京102617

出　　处：《上海航天（中英文）》2021年第2期149-156,共8页Aerospace Shanghai（Chinese&English）

摘　　要：近年来,航空航天领域轻量化进程发展迅速,镁合金在其中扮演着越来越重要的角色。然而,镁合金耐腐蚀性不佳的特点制约了镁合金的应用范围。本文综述了搅拌摩擦加工技术调控含第二相镁合金耐腐蚀性能的研究现状,从动态再结晶和加速第二相破碎、固溶两个角度,论述了搅拌摩擦加工调控镁合金组织的基本原理,并分析了搅拌摩擦加工改善含粗大第二相镁合金耐腐蚀性的原因,为改善含粗大第二相镁合金的耐蚀性提供了技术途径和研究方向。In recent years,the lightweight materials and their processes in the aerospace field have developed rapidly,where magnesium alloys have played an increasingly important role.However,the poor corrosion resistance of magnesium alloys restricts their further applications.This article reviews the recent developments of friction stir processing(FSP)technology in regulating the corrosion resistance of magnesium alloys containing coarse second-phase particles.The basic principles of FSP in regulating the microstructure of magnesium alloys are discussed from two perspectives,i.e.,dynamic recrystallization(DRX)and accelerating the fragmentation and solid solution of the secondphase,and the reasons for improving the corrosion resistance of magnesium alloys containing coarse second-phase particles by FSP are analyzed.The results provide technical approach and research direction for improving the corrosion resistance of magnesium alloys with coarse second-phase particles.

关 键 词：搅拌摩擦加工 动态再结晶 加速溶解 粗大第二相颗粒 点蚀 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG306[金属学及工艺—金属材料]