Grain refinement effect of La_2(CO_3)_3 on AZ91 magnesium alloy

作     者：WANG Ling ZHAO Haofeng GUO Shengli SU Junyi WANG Ling1), ZHAO Haofeng1, 2), GUO Shengli1), and SU Junyi1,2) 1) Department of Materials, College of Mathematics and Physics, Nanjing Information University of Science and Technology, Nanjing 210044, China2) Department of Materials Processing ,College of Materials, Xi′an Jiaotong University, Xi′an 740078, China

作者机构：Department of Materials College of Mathematics and Physics Nanjing Information University of Science and Technology Nanjing 210044 China Department of Materials College of Mathematics and Physics Nanjing Information University of Science and Technology Nanjing 210044 China Department of Materials Processing College of Materials Xi''an Jiaotong University Xi''an 740078 China Department of Materials College of Mathematics and Physics Nanjing Information University of Science and Technology Nanjing 210044 China Department of Materials College of Mathematics and Physics Nanjing Information University of Science and Technology Nanjing 210044 China Department of Materials Processing College of Materials Xi''an Jiaotong University Xi''an 740078 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2006年第25卷第Z2期

页      面：160-162页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：AZ91 alloy La2(CO3)3 microstructure mechanical properties 

摘      要：The La2(CO3)3 addition makes the grain of AZ91 alloy be refined obviously. The average primary dendrite size of the alloy decreases from 150 to 50 μm. The microstructure of typical dendrite turns into the equal-axed grain with the addition of 2.5 wt.% La2(CO3)3 refiner. The mechanical properties tests indicate that the tensile strength and especially elongation of the alloys are improved with the addition of La2(CO3)3 and their maximum enhancing rates based on the La2(CO3)3-free AZ91 alloy are 26% and 5.2 times at 2.5 wt.% La2(CO3)3 refiner respectively.