Microstructures and mechanical properties of Al-Cu-Mn alloy with La and Sm addition
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- 作者：Zhongwei Chen (1) chzw@nwpu.edu.cn
Pei Chen (1)
Cuiying Ma (1) - 关键词：microstructure – ; mechanical property – ; Al ; Cu ; Mn alloy – ; lanthanum – ; samarium
- 刊名：Rare Metals
- 出版年：2012
- 出版时间：August 2012
- 年：2012
- 卷：31
- 期：4
- 页码：332-335
- 全文大小：329.6 KB
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- ISSN：1867-7185
文摘
The effect of single addition of La or Sm on the microstructures and mechanical properties of an Al-Cu-Mn alloy were investigated by microstructure characterization and tensile test. The results show that addition of La or Sm into the Al-Cu-Mn alloy can remarkably increase the density of θ′ phase and refine the microstructure, and thus, improves the mechanical properties at room temperature. La addition results in a more considerable increase in the density and refinement of θ′ phase than Sm addition. La addition has a more significant contribution on the mechanical properties of the Al-Cu-Mn alloy than Sm addition. In addition, a new phase of Al6Cu6La is formed in the Al-Cu-Mn alloy with La addition.