Friction Stir Processing of a Cast WE43 Mg Alloy

Abstract

A heat treatable sand cast WE43 magnesium alloy was friction stir processed (FSP) at 3 heat indices to determine the effect on microstructural and mechanical properties of the processed region. In addition, the sequence of solutionizing and aging heat treatment was investigated to maximize the processing efficiency, which is defined as the percent increase of FSP nugget yield strength over base yield strength. The maximum processing efficiency achieved for the casting was 125%, when a yield strength of 250 MPa was achieved in the FSP + T5 heat treatment condition. Compared to a yield strength of 202 MPa in the cast + T6 condition, this increase in mechanical properties is an attractive prospect for the local enhancement of Mg-Y-RE sand castings.

Department(s)

Materials Science and Engineering

Keywords and Phrases

WE43; Cast Magnesium; Friction Stir Processing; Grain Size

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 The Minerals, Metals & Materials Society (TMS), All rights reserved.

Publication Date

01 Jan 2007

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