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Metals 2017, 7(1), 10;

Microstructures and Properties Evolution of Al-Cu-Mn Alloy with Addition of Vanadium

National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, China
Author to whom correspondence should be addressed.
Academic Editor: Chun-Liang Chen
Received: 15 October 2016 / Revised: 22 December 2016 / Accepted: 23 December 2016 / Published: 30 December 2016
(This article belongs to the Special Issue Mechanical Alloying)
View Full-Text   |   Download PDF [5210 KB, uploaded 30 December 2016]   |  


The effect of the vanadium addition on the microstructure, the precipitation behavior, and the mechanical properties of the Al-5.0Cu-0.4Mn alloy has been studied. The as-cast Al-5.0Cu-0.4Mn alloy was produced by squeeze casting and the heat treatment was carried out following the standard T6 treatment. It is shown that, with the addition of V, grain refinement of aluminum occurred. During heat treatment, the addition of V accelerates the precipitation kinetics of θ′ (Al2Cu) phase along the grain boundaries, and promotes the growth rate of the θ′ in the α(Al) matrix. Meanwhile, the addition of V retards the precipitation of T (Al20Cu2Mn3) phase. The tensile strength of the Al-5.0Cu-0.4Mn alloy increases with the increase of V content, which can be explained by combined effects of the solid solution strengthening and precipitate strengthening. However, excessively high V addition deteriorates the mechanical properties by forming brittle coarse intermetallic phases. View Full-Text
Keywords: Al alloys; mechanical properties; vanadium; squeeze casting; heat treatment Al alloys; mechanical properties; vanadium; squeeze casting; heat treatment

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Meng, F.; Wang, Z.; Zhao, Y.; Zhang, D.; Zhang, W. Microstructures and Properties Evolution of Al-Cu-Mn Alloy with Addition of Vanadium. Metals 2017, 7, 10.

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