Effect of Friction Stir Processing on Microstructure and Mechanical Properties of a Cast-magnesium-rare Earth Alloy
Single-pass friction stir processing (FSP) was used to increase the mechanical properties of a cast Mg-Zn-Zr-rare earth (RE) alloy, Elektron 21. A fine grain size was achieved through intense plastic deformation and the control of heat input during processing. The effects of processing and heat treatment on the mechanical and microstructural properties were evaluated. An aging treatment of 16 hours at 200 °C resulted in a 0.2 pct proof stress of 275 MPa in the FSP material, a 61 pct improvement over the cast + T6 condition.
R. S. Mishra and T. A. Freeney, "Effect of Friction Stir Processing on Microstructure and Mechanical Properties of a Cast-magnesium-rare Earth Alloy," Metallurgical and Materials Transactions A, Springer Verlag, Jan 2010.
The definitive version is available at http://dx.doi.org/10.1007/s11661-009-0080-2
Materials Science and Engineering
Keywords and Phrases
Cast-Magnesium; Friction Stir; Mechanical Properties; Rare Earth Alloy
Article - Journal
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