添加钒对AlCoCrFeNi高熵合金耐磨性的影响。

Effect of Vanadium Addition on the Wear Resistance of AlCoCrFeNi High-Entropy Alloy.

作者信息

Tokarewicz Marzena, Gradzka-Dahlke Malgorzata, Nowak Wojciech J, Gradzik Andrzej, Szala Miroslaw, Walczak Mariusz

机构信息

Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45 C, 15-351 Bialystok, Poland.

Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Powstanców Warszawy 12, 35-959 Rzeszow, Poland.

出版信息

Materials (Basel). 2024 Dec 9;17(23):6021. doi: 10.3390/ma17236021.

DOI:10.3390/ma17236021

PMID:39685455

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11643733/

Abstract

High-entropy alloys are of interest to many researchers due to the possibility of shaping their functional properties by, among other things, the use of alloying additives. One approach to improving the wear resistance of the AlCoCrFeNi alloy is modification through the addition of titanium. However, in this study, an alternative solution was explored by adding vanadium, which has a completely different effect on the material's structure compared to titanium. The effect of vanadium additives on changes in the microstructure, hardness, and wear resistance of the AlCoCrFeNi alloy. The base alloys AlCoCrFeNi and AlCoCrFeNiV were obtained by induction melting. The results showed that the presence of vanadium changes the microstructure of the material. In the case of the base alloy, the structure is biphasic with a visible segregation of alloying elements between phases. In contrast, the AlCoCrFeNiV alloy has a homogeneous solid solution bcc structure. The presence of vanadium increased hardness by 33%, while it significantly reduced friction wear by 73%. Microscopic observations of friction marks indicate differences in the wear mechanisms of the two materials.

摘要

由于通过使用合金添加剂等方式来塑造其功能特性具有可能性，高熵合金受到了许多研究人员的关注。提高AlCoCrFeNi合金耐磨性的一种方法是通过添加钛进行改性。然而，在本研究中，探索了一种替代解决方案，即添加钒，与钛相比，钒对材料结构具有完全不同的影响。钒添加剂对AlCoCrFeNi合金微观结构、硬度和耐磨性变化的影响。基础合金AlCoCrFeNi和AlCoCrFeNiV通过感应熔炼获得。结果表明，钒的存在改变了材料的微观结构。对于基础合金，其结构为双相，相之间存在明显的合金元素偏析。相比之下，AlCoCrFeNiV合金具有均匀的体心立方固溶体结构。钒的存在使硬度提高了33%，同时显著降低了摩擦磨损，降幅达73%。摩擦痕迹的微观观察表明两种材料的磨损机制存在差异。