Effects of Scandium and Zirconium Combination Alloying on the Microstructure and Mechanical Properties of Al-4Cu-l. 5Mg Alloy
The influences of minor scandium and zirconium combination alloying on the as - cast microstructure and mechanical properties of Al-4Cu-l. 5Mg alloy have been experimentally investigated. The experimental results show that when the minor elements of scandium and zirconium are simultaneously added into the Al-4Cu-1. 5Mg alloy. the as-cast microstructure of the alloy is effectively modified and the grAlns of the alloy are greatly refined. The coarse dendrites in the microstructure of the alloy without Sc and Zr additions are refined to the uniform and fine equiaxed grAlns. As the additions of Sc and Zr are 0.4％ and 0.2％. respectively. the tensile strength. yield strength and elongation of the alloy are relatively better. which are 275. 0 MPa. 176.OMPa and 8.0％ respectively. The tensile strength is increased by 55. 3％. and the elongation is nearly rAlsed three times. compared with those of the alloy without Sc and Zr additions.
Al-Cu-Mg alloy scandium zirconium combination alloying mechanical properties
Xiang Qingchun Zhao Jing Hou Lina Wang Ruichun Li Rongde
School of Materials Science andEngineering. Shenyang University of Technology. Shenyang 110870. China
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
141-144
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）