Qi Wei , Aijun Zhang , Benbin Xin , Jiesheng Han , Bo Su , Xiaochao Wang , Junhu Meng
{"title":"观察 800 °C 下韧性 VNbTa 中熵难熔合金的低摩擦性和高耐磨性","authors":"Qi Wei , Aijun Zhang , Benbin Xin , Jiesheng Han , Bo Su , Xiaochao Wang , Junhu Meng","doi":"10.1016/j.intermet.2024.108497","DOIUrl":null,"url":null,"abstract":"<div><p>VNbTa refractory medium-entropy alloy (RMEA) with extraordinary strength-ductility synergy and rolling formability was deemed as an ideal structural material suitable for industrial applications, whereas the tribological performance has been still unclear. Therefore, this work employed a ball-on-disc tribometer to evaluate friction and wear properties of VNbTa alloy at various temperatures. It was surprisingly found that, at 800 °C, the alloy exhibits exceptional tribological performance with the coefficient of friction (COF) of 0.13 and wear rate of 3.9 × 10<sup>−6</sup> mm<sup>3</sup>/Nm. Our results indicated that the mild friction and wear at 800 °C are mainly attributed to the durable lubrication of in-situ molten V<sub>2</sub>O<sub>5</sub> as well as good load-bearing capacity of hard oxide scale.</p></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"175 ","pages":"Article 108497"},"PeriodicalIF":4.3000,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Observation of low friction and high wear resistance in the ductile VNbTa refractory medium-entropy alloy at 800 °C\",\"authors\":\"Qi Wei , Aijun Zhang , Benbin Xin , Jiesheng Han , Bo Su , Xiaochao Wang , Junhu Meng\",\"doi\":\"10.1016/j.intermet.2024.108497\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>VNbTa refractory medium-entropy alloy (RMEA) with extraordinary strength-ductility synergy and rolling formability was deemed as an ideal structural material suitable for industrial applications, whereas the tribological performance has been still unclear. Therefore, this work employed a ball-on-disc tribometer to evaluate friction and wear properties of VNbTa alloy at various temperatures. It was surprisingly found that, at 800 °C, the alloy exhibits exceptional tribological performance with the coefficient of friction (COF) of 0.13 and wear rate of 3.9 × 10<sup>−6</sup> mm<sup>3</sup>/Nm. Our results indicated that the mild friction and wear at 800 °C are mainly attributed to the durable lubrication of in-situ molten V<sub>2</sub>O<sub>5</sub> as well as good load-bearing capacity of hard oxide scale.</p></div>\",\"PeriodicalId\":331,\"journal\":{\"name\":\"Intermetallics\",\"volume\":\"175 \",\"pages\":\"Article 108497\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-09-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Intermetallics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0966979524003169\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Intermetallics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0966979524003169","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Observation of low friction and high wear resistance in the ductile VNbTa refractory medium-entropy alloy at 800 °C
VNbTa refractory medium-entropy alloy (RMEA) with extraordinary strength-ductility synergy and rolling formability was deemed as an ideal structural material suitable for industrial applications, whereas the tribological performance has been still unclear. Therefore, this work employed a ball-on-disc tribometer to evaluate friction and wear properties of VNbTa alloy at various temperatures. It was surprisingly found that, at 800 °C, the alloy exhibits exceptional tribological performance with the coefficient of friction (COF) of 0.13 and wear rate of 3.9 × 10−6 mm3/Nm. Our results indicated that the mild friction and wear at 800 °C are mainly attributed to the durable lubrication of in-situ molten V2O5 as well as good load-bearing capacity of hard oxide scale.
期刊介绍：
This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.
The journal reports the science and engineering of metallic materials in the following aspects:
Theories and experiments which address the relationship between property and structure in all length scales.
Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations.
Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties.
Technological applications resulting from the understanding of property-structure relationship in materials.
Novel and cutting-edge results warranting rapid communication.
The journal also publishes special issues on selected topics and overviews by invitation only.
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