稀土对Zn-11Al-8Cu-Mg合金组织和性能的影响  

Effect of addition of rare earth elements on the microstructure and properties of Zn-11Al-8Cu-Mg alloy

作　　者：刘洪军[1] 曹驰[1] 钱旺盛[1] 郝远[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050

出　　处：《中国体视学与图像分析》2010年第2期152-158,共7页Chinese Journal of Stereology and Image Analysis

基　　金：甘肃省科技支撑项目(0708GKCA057)

摘　　要：通过金相与电子显微分析和拉伸强度、硬度测试等方法 ,研究了稀土元素对Zn-11%Al-8%Cu-Mg合金微观组织和性能的影响。结果表明:稀土元素能够细化合金组织,并形成均匀分布的新相析出物;适量稀土的加入能够提高合金的强度、硬度和冲击韧性,稀土加入量为0.05%时合金的性能最好。Effect of RE addition on the microstructures and properties of Zn-11Al-8Cu-Mg alloy was investigated by scanning electron microscopy （SEM）, electron probe micro-analysis （EPMA）, X-ray diffraction （XRD）, tensile test and hardness test. The results show that addition of RE refines microstructure and the precipitates of the alloy, forming uniform distributed new microstructure. The strength, hardness and impact toughness of the alloy are enhanced after addition of appropriate amount of RE. best properties of the alloy are achieved with addition of 0.05% RE.

关 键 词：稀土 Zn-Al-Cu合金 微观组织 力学性能 

分 类 号：TG146.13[一般工业技术—材料科学与工程]