Mechanical Engineering Faculty Research

Title

On the Role of Nano-Alumina Particulate Reinforcements in Enhancing the Oxidation Resistance of Magnesium Alloy AZ31B

Document Type

Article

Publication Date

Winter 1-25-2009

Abstract

In this paper the intrinsic influence of nano-alumina particulates (0.66 vol.%, 1.11 vol.%, and 1.50 vol.%) on the oxidation behavior of magnesium alloy AZ31B is presented and discussed. The solidification-processed samples subsequent to extrusion were carefully tested under ambient atmospheric conditions at temperatures ranging from 300 °C to 470 °C and up to a time period of 7 h. The carefully conducted test results reveal a progressive increase in the oxidation resistance of the AZ31B alloy with an increasing presence of nano-size alumina (Al2O3) particulates. Further, the presence of nano-Al2O3 particulates tended to retard the transient stage of oxidation. Subsequent to oxidation testing, the test samples were characterized for their microstructure to provide an insight into their oxidation behavior.

Publication Title

Materials Science and Engineering: A

Volume

500

Issue

1-2

First Page

233

Last Page

237