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.
出处
《金属热处理》
CAS
CSCD
北大核心
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)
关键词
稀土
AZ80镁合金
显微组织
力学性能
rare earth
AZ80 magnesium alloy
microstructure
mechanical properties
