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Microstructure and Mechanical Properties of Medical Magnesium Alloy Fabricated by Unequal Channel Angular Pressing
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China.
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China.
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China.
- 1 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China
- 2 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China.
- 3 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China.
- 4 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China.
Journal of Biomaterials and Nanobiotechnology·Volume 04 (2013)·Pages 132–136·Published 11 April 2013·DOI10.4236/jbnb.2013.42018
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Abstract
A new unequal channel angular pressing (UCAP) procedure is proposed for ultrafine-grained metals and alloys. The microstructures and mechanical properties of Mg-5.8Zn-1.2Y-0.7Zr alloys subjected to unequal channel angular press ing (UCAP) are investigated. It is found that the optimum condition in UCAPed alloy is obtained at 523 K with a larg est elongation to failure of 13.1% and ultimate tensile strength of ~400 MPa. Microstructural observations show that the grain size is refined to ~1.0 μm during UCAP. The probable mechanisms for these high mechanical properties are at tributed to grain size and destroyed secondary phase strengthening effects and fine precipitates formed during pressing at high temperature by severe shear and plastic deformation.
KeywordsMg-Zn-Y-Zr Magnesium AlloyUnequal Channel Angular PressingMicrostructureMechanical Property
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