可生物降解 Mg-Sn-Y 合金的微结构、机械和腐蚀特性研究

IF 2.6 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Selma Özarslan, Hüseyin Şevik, İdris Sorar
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引用次数: 0

摘要

本研究采用高压压铸(HPDC)技术生产了可生物降解的镁合金。研究了添加 Y 对铸态 Mg-4Sn-xY(x = 0、1、2、4 wt.%)合金的微观结构、机械性能和腐蚀行为的影响。分别使用场发射扫描电子显微镜(FE-SEM)和能量色散光谱(EDS)对合金的表面形貌和微观结构进行了检测。此外,还进行了拉伸和硬度测试,以检验其机械性能。微观结构研究表明,钇的加入会导致合金晶粒尺寸减小,并形成具有高熔化温度的 Sn3Y5 和 MgSnY 金属间化合物以及 Mg2Sn 金属间化合物。按重量计,添加 1%的钇就能达到最大拉伸强度值,而随着钇的添加量增加,屈服强度、伸长率和硬度值也会继续增加。腐蚀测试表明,在镁锑合金中添加钇后,由于微观结构发生了变化,合金的耐腐蚀性得到了提高。研究发现,Mg-4Sn-4Y 合金是一种很有前景的可生物降解镁合金,尤其适用于骨科应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Investigation of Microstructural, Mechanical and Corrosion Properties of Biodegradable Mg–Sn–Y Alloys

Investigation of Microstructural, Mechanical and Corrosion Properties of Biodegradable Mg–Sn–Y Alloys

In this study, biodegradable magnesium alloys were produced using the high pressure die casting (HPDC) technique. Effects of Y addition on microstructure, mechanical properties and corrosion behaviors of as-cast Mg–4Sn–xY (x = 0, 1, 2, 4 wt.%) alloys are investigated. The surface morphology of the alloys was examined using field emission scanning electron microscopy (FE-SEM) and the microstructure was examined using energy dispersive spectroscopy (EDS), respectively. Tensile and hardness tests were carried out to examine the mechanical properties. Microstructural studies have shown that the addition of yttrium causes a reduction in the grain size of the alloy and the formation of Sn3Y5 and MgSnY intermetallic compounds with high melting temperature, as well as Mg2Sn intermetallic. While, the maximum tensile strength value is achieved with the addition of 1% yttrium by weight, the increase in yield strength, elongation percentage and hardness values continue with the addition of more yttrium. Corrosion tests have shown that the addition of yttrium to the Mg–Sn alloy increases the corrosion resistance of the alloys due to microstructural changes. The Mg–4Sn–4Y alloy is found to be a promising biodegradable magnesium alloy especially for orthopedic applications.

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来源期刊
International Journal of Metalcasting
International Journal of Metalcasting 工程技术-冶金工程
CiteScore
4.20
自引率
42.30%
发文量
174
审稿时长
>12 weeks
期刊介绍: The International Journal of Metalcasting is dedicated to leading the transfer of research and technology for the global metalcasting industry. The quarterly publication keeps the latest developments in metalcasting research and technology in front of the scientific leaders in our global industry throughout the year. All papers published in the the journal are approved after a rigorous peer review process. The editorial peer review board represents three international metalcasting groups: academia (metalcasting professors), science and research (personnel from national labs, research and scientific institutions), and industry (leading technical personnel from metalcasting facilities).
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