Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 527, Issue 10-11, Pages 2780-2783Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2010.01.021
Keywords
Mg-Li alloy; Cu; Microstructures; Hardness
Categories
Funding
- National Hi-Tech Research Development Program of China [2006AA03Z510]
- Harbin Science and Technology [2007RFQXG032]
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The effects of Cu additions (0.5-2.0 wt.%) on the microstructure and hardness of Mg-5Li-3Al-2Zn alloy were studied. Optical microscope, scanning electronic microscope, X-ray diffraction and energy dispersive X-ray spectroscope were employed to study the microstructure of the alloys. Results show that, as the Cu addition increases, the AlCuMg phase exists in the alloy. This phase can partially restrain the formation and growth of AlLi phase. The Brinell macrohardness of the as-cast alloys increases with the increase of Cu content. The Vickers microhardness of the phases of as-cast alloy was measured to analyze the strengthening mechanisms. (C) 2010 Elsevier B.V. All rights reserved.
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