东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (1): 45-49.DOI: 10.12068/j.issn.1005-3026.2018.01.010

• 材料与冶金 • 上一篇    下一篇

生物医用Zn-5Al合金的微观组织与性能

祖国胤1， 刘莹1， 史建超2， 穆永亮2   

  1. (1. 东北大学 材料科学与工程学院， 辽宁 沈阳110819; 2. 东北大学 冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2016-07-09 修回日期:2016-07-09 出版日期:2018-01-15 发布日期:2018-01-31
  • 通讯作者: 祖国胤
  • 作者简介:祖国胤(1977-)，男，黑龙江齐齐哈尔人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金-中国科学院大科学装置科学研究联合基金资助项目(U1332110)； 辽宁省“百千万人才工程”资助项目(2013921071).

Microstructure and Properties of Biomedical Zn-5Al Alloy

ZU Guo-yin1， LIU Ying1， SHI Jian-chao2， MU Yong-liang2   

  1. 1.School of Materials Science & Engineering， Northeastern University， Shenyang 110819， China; 2.School of Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2016-07-09 Revised:2016-07-09 Online:2018-01-15 Published:2018-01-31
  • Contact: ZU Guo-yin
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摘要： 研究了生物医用Zn-5Al合金的微观组织结构演化，探讨了其组织对力学性能的影响.对铸态、均匀化处理和轧制态Zn-5Al合金的微观组织进行了表征，分析了合金的相组成，测试了轧制态Zn-5Al合金的力学性能.结果表明:铸态与均匀化处理后的Zn-5Al合金的相组成均主要为η-Zn相和α-Al相，铸态合金组织片层间距约为300nm.均匀化处理过程中发生了共析反应，合金中的α-Al相由铸态的长条形演变为球形共晶组织.经过总变形率85%的热轧变形后，Zn-5Al合金的屈服强度和抗拉强度分别为98MPa和130MPa，断裂延伸率达到74%.

关键词: Zn-5Al合金, 生物医用, 显微组织, 轧制, 力学性能

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

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