Influences of nickel and vanadium impurities on microstructure of aluminum alloys

Zhu, Suming, Yao, Ji-Yong, Sweet, Lisa, Easton, Mark, Taylor, John, Robinson, Paul and Parson, Nick (2013) Influences of nickel and vanadium impurities on microstructure of aluminum alloys. JOM, 65 5: 584-592. doi:10.1007/s11837-013-0572-9

Author Zhu, Suming
Yao, Ji-Yong
Sweet, Lisa
Easton, Mark
Taylor, John
Robinson, Paul
Parson, Nick
Title Influences of nickel and vanadium impurities on microstructure of aluminum alloys
Journal name JOM   Check publisher's open access policy
ISSN 1047-4838
Publication date 2013-05
Year available 2013
Sub-type Article (original research)
DOI 10.1007/s11837-013-0572-9
Volume 65
Issue 5
Start page 584
End page 592
Total pages 9
Place of publication New York, United States
Publisher Springer New York LLC
Collection year 2014
Language eng
Abstract In recent years, the deterioration in the available coke quality for anode production has led to increased levels of metal impurities such as nickel and vanadium in primary aluminum. There is growing concern from the industry with regard to the impact of increased Ni and V levels on the downstream properties of Al alloy products. This article presents a detailed investigation of the influences of Ni and V impurities on microstructure of three common Al alloys, i.e., AA6063, AA3102, and A356, in both as-cast and heat-treated conditions. The characterization techniques employed include scanning electron microscopy, electron backscattered diffraction, energy-dispersive x-ray spectroscopy, wavelength-dispersive spectroscopy, and transmission electron microscopy. It is shown that the phase constituents of AA6063 are not altered by Ni additions up to 0.05% or V additions up to 0.04%. Whereas there is no change in phase constituents with increasing Ni up to 0.015% for AA3102, the addition of 0.05% Ni seems to have significant influence on the microstructure. For A356, Ni additions up to 0.02% do not seem to have significant influence on the microstructure, but a new phase with significantly high Ni content is formed when the Ni impurity level is increased to 0.05%. The deep insight obtained in this work should be helpful to understand the influences of Ni and V impurities on properties of Al alloys.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 12 times in Scopus Article | Citations
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