The Impacts of Heat Treatment on the Material Structure and Properties of Mg-4.0Zn-1.0Ca-0.6Zr Bio-Medical Materials

Abstract:

The Mg-4.0Zn-1.0Ca-0.6Zr alloy was prepared through casting-homogenizing-rolling and the study was made on the alloy microstructure as well as mechanical properties under different heat treatment processes. The result shows that, alloy sheets have their hardness and tensile strength rising at the first phase and inclining later with the extension of aging time, in which the maximum values gained at 12h i.e. 71.2HV and 320MPa accordingly. At 8h of aging the extensibility obtained maximum value of 19.2%, then the value reduced gradually with the continuous aging time. The mechanical properties of alloy sheets increased after tempering process, the reason should be that, inside of the crystal particles rich amount of Mg₆Ca₂Zn₃ and MgZn strengthening phases were separated out.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 662-666
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.662
• Online since: September 2013
• Authors: Xue Fei Zhang*, Tian Guo Zhou, Ren Guo Guan, Tong Cui
• Keywords: Aging, Magnesium Alloy, Mechanical Property, Microstructure

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