Microstructure and Properties of Biomedical Zn-5Al Alloy

doi:10.12068/j.issn.1005-3026.2018.01.010

Abstract

Abstract: The phase selection and microstructural evolution of biodegradable biomedical Zn-5Al alloy were studied. The microstructure of as casting， after homogenization treatment and the rolled Zn-5Al alloy was characterized， respectively and the phase compositions of the Zn-5Al alloy was analyzed.Then the mechanical properties of the rolled Zn-5Al alloy were tested. The results showed that the phase compositions of the as casting Zn-5Al alloy and after homogenization treatment were mainly composed by the η-Zn phase and α-Al phase. The interlamellar spacing of the eutectic structure in the as casting Zn-5Al alloy was about 300nm.The eutectoid reaction occurred during the homogenization treatment and the α-Al phase of the Zn-5Al alloy was changed from the original strip shape to spherical eutectic structure after homogenization treatment. After rolling of 85% for a total deformation rate， the yield and tensile strength of the Zn-5Al alloy were 98MPa and 130MPa， respectively， and its fracture elongation reached 74%.

Key words: Zn-5Al alloy, biomedical, microstructure, rolling, mechanical property

CLC Number:

TG146.13

ZU Guo-yin， LIU Ying， SHI Jian-chao， MU Yong-liang. Microstructure and Properties of Biomedical Zn-5Al Alloy[J]. Journal of Northeastern University Natural Science, 2018, 39(1): 45-49.

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