The microstructure evolution, wear and corrosion behavior of biomedical Ti40Zr40Nb5Ta12Sn3 MEA at different heat treatment conditions

IF 4.2 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2024-09-27 DOI:10.1016/j.ijrmhm.2024.106906

Dandan Zhu , Shiwen Hu , Xiaoqiang Li , Ping Long , Youtong Yang , Qinglin Li , Dexue Liu

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Abstract

In the present study, the microstructure, wear and corrosion properties of a novel Ti₄₀Zr₄₀Nb₅Ta₁₂Sn₃ medium-entropy alloy (MEA) processed by warm rolling and subsequent heat treatment were investigated. The findings reveal nanoscale α” phase precipitated in the alloy following annealing at temperatures of 450 °C, 550 °C, and 650 °C. During the friction and wear of the MEA, it was observed that the wet friction coefficient and wear rate of the alloy surpassed those under dry friction conditions. The wear mechanisms of alloys were abrasive wear and oxidation wear during dry friction, and abrasive wear and corrosion wear during wet friction. Furthermore, Sn₃–450 alloy exhibited exceptional corrosion resistance compared to Ti6Al4V alloy, with a lower corrosion current density (I_corr: 0.165 μA·cm⁻²) and a higher corrosion potential (E_corr: −0.638 ± 0.015 V) in phosphate buffered saline (PBS) solution. These results suggest the significant potential application of the Sn₃–450 alloy in biomedical applications.

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不同热处理条件下生物医学 Ti40Zr40Nb5Ta12Sn3 MEA 的微观结构演变、磨损和腐蚀行为

本研究调查了一种新型 Ti40Zr40Nb5Ta12Sn3 中熵合金（MEA）的微观结构、磨损和腐蚀特性，该合金是通过热轧和后续热处理加工而成的。研究结果表明，在 450 ℃、550 ℃ 和 650 ℃ 的退火温度下，合金中析出了纳米级 α "相。在 MEA 的摩擦和磨损过程中，观察到合金的湿摩擦系数和磨损率超过了干摩擦条件下的磨损率。合金的磨损机制为干摩擦时的磨料磨损和氧化磨损，以及湿摩擦时的磨料磨损和腐蚀磨损。此外，与 Ti6Al4V 合金相比，Sn3-450 合金表现出优异的耐腐蚀性，在磷酸盐缓冲盐水（PBS）溶液中具有更低的腐蚀电流密度（Icorr：0.165 μA-cm-2）和更高的腐蚀电位（Ecorr：-0.638 ± 0.015 V）。这些结果表明，Sn3-450 合金在生物医学应用中具有巨大的应用潜力。

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来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.