Study on microstructure and mechanical properties of ZL107 alloy added with yttrium  

作　　者：于思荣 金延竹 熊伟 刘燕 

机构地区：[1]College of Mechanical and Electronic Engineering,China University of Petroleum [2]College of Materials Science and Engineering,Jilin University

出　　处：《Journal of Rare Earths》2013年第2期198-203,共6页稀土学报（英文版）

基　　金：Project supported by the Fundamental Research Funds for the Central Universities(11CX05003A);National Natural Science Foundation of China(51075184,51004112,51275555)

摘　　要：The effects of Y on the microstructure and mechanical properties of ZL107 alloy were investigated using optical microscope, scanning electron microscope （SEM）, Brinell hardometer, and MTS 810-22M tensile testing machine in this paper. The results showed that after Y was added to ZL107 alloy, the size of α-Al dendritie reduced, the acicular eutectic Si became short rod-shaped or granular, and the number and size of the blowholes obviously reduced. The mechanical properties of ZL107 alloy firstly increased and then decreased with Y content increasing. When Y content was 0.1 wt.%, the tensile strength and hardness of the alloy were maximum.The effects of Y on the microstructure and mechanical properties of ZL107 alloy were investigated using optical microscope, scanning electron microscope （SEM）, Brinell hardometer, and MTS 810-22M tensile testing machine in this paper. The results showed that after Y was added to ZL107 alloy, the size of α-Al dendritie reduced, the acicular eutectic Si became short rod-shaped or granular, and the number and size of the blowholes obviously reduced. The mechanical properties of ZL107 alloy firstly increased and then decreased with Y content increasing. When Y content was 0.1 wt.%, the tensile strength and hardness of the alloy were maximum.

关 键 词：Al alloy MICROSTRUCTURE mechanical property rare earths 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TN16[金属学及工艺—金属材料]