Ce、Sm对AZ80镁合金组织和力学性能的影响  

Effects of Ce and Sm on microstructure and mechanical properties of AZ80 magnesium alloy

作　　者：王浩[1] 文九巴[1] 贺俊光[1] 马景灵[1] 杨永顺[1] 邵海洋[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《金属热处理》2013年第9期96-98,共3页Heat Treatment of Metals

基　　金：河南省高校科技创新团队支持计划(2012IRTSTHN008);河南省自然科学基金(092300410132);河南省科技攻关项目(072102230007)

摘　　要：研究了稀土Ce、Sm对AZ80镁合金组织和力学性能的影响。结果表明,添加稀土元素Ce和Sm后合金晶粒明显细化;组织中分别形成杆状析出相(Al4Ce)和颗粒状析出相(Al3Sm),减少了合金中β相(Mg17Al12)数量,并使连续网状分布的β相变得断续,从而提高合金的强度、硬度和伸长率。综合分析认为AZ80-1.0Sm合金的力学性能最优,抗拉强度达到213 MPa。Effects of Ce and Sm on microstructure and mechanical properties of AZ80 magnesium alloy were investigated. The results show that with Ce and Sm adding, the grain size of the alloy is refined, rod precipitated phase （A14Ce） and granular shape precipitated phase （A13Sm） are formed in microstructure, the amount of β （Mg17A112 ） phase is reduced and the continuous net-shape β phase is transformed into intermittent distribution which results in increase of tensile strength, elongation and hardness of the alloy. In conclusion, the performance of AZ80-1.0 Sm alloy is optimum, and its tensile strength reaches 213 MPa.

关 键 词：稀土 AZ80镁合金 显微组织 力学性能 

分 类 号：TG146[一般工业技术—材料科学与工程]