{"title":"可控相干纳米沉淀法优化中熵合金的摩擦行为","authors":"Jiyun Kong, Qihong Fang, Jia Li","doi":"10.1088/1361-651x/ad04f2","DOIUrl":null,"url":null,"abstract":"Abstract In recent years, FeCrNi medium entropy alloy, a new material with high hardness, high strength, good ductility and wear resistance, has been widely studied. In this work, the effect of precipitation volume fraction on the friction behavior of FeCrNi is studied by molecular dynamics simulation. With the increase of precipitation volume fraction, the average friction coefficient shows an upward trend. When the volume fraction of precipitation is between 2.33% and 3.10%, the wear resistance of FeCrNi would be enhanced after the nanoscratching. When the volume fraction of precipitation is between 2.33% and 3.10%, the normal force is larger, which means that a certain precipitation volume fraction will strengthen FeCrNi. Low precipitation volume fraction can effectively reduce the wear volume and wear rate during scratching, thus effectively reducing frictional force and friction coefficient. The interaction between dislocation and precipitation is an important factor that hinders dislocation propagation, leading to sample strengthening and the increase of wear volume, which is manifested as the increase of normal force and frictional force. The results guide the study of the effect of multiple precipitation on frictional properties and precipitation-dislocation interaction in FeCrNi.","PeriodicalId":18648,"journal":{"name":"Modelling and Simulation in Materials Science and Engineering","volume":"56 1","pages":"0"},"PeriodicalIF":1.9000,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimizing the friction behavior of medium entropy alloy via controllable coherent nanoprecipitation\",\"authors\":\"Jiyun Kong, Qihong Fang, Jia Li\",\"doi\":\"10.1088/1361-651x/ad04f2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract In recent years, FeCrNi medium entropy alloy, a new material with high hardness, high strength, good ductility and wear resistance, has been widely studied. In this work, the effect of precipitation volume fraction on the friction behavior of FeCrNi is studied by molecular dynamics simulation. With the increase of precipitation volume fraction, the average friction coefficient shows an upward trend. When the volume fraction of precipitation is between 2.33% and 3.10%, the wear resistance of FeCrNi would be enhanced after the nanoscratching. When the volume fraction of precipitation is between 2.33% and 3.10%, the normal force is larger, which means that a certain precipitation volume fraction will strengthen FeCrNi. Low precipitation volume fraction can effectively reduce the wear volume and wear rate during scratching, thus effectively reducing frictional force and friction coefficient. The interaction between dislocation and precipitation is an important factor that hinders dislocation propagation, leading to sample strengthening and the increase of wear volume, which is manifested as the increase of normal force and frictional force. The results guide the study of the effect of multiple precipitation on frictional properties and precipitation-dislocation interaction in FeCrNi.\",\"PeriodicalId\":18648,\"journal\":{\"name\":\"Modelling and Simulation in Materials Science and Engineering\",\"volume\":\"56 1\",\"pages\":\"0\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2023-10-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Modelling and Simulation in Materials Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1088/1361-651x/ad04f2\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Modelling and Simulation in Materials Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/1361-651x/ad04f2","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Optimizing the friction behavior of medium entropy alloy via controllable coherent nanoprecipitation
Abstract In recent years, FeCrNi medium entropy alloy, a new material with high hardness, high strength, good ductility and wear resistance, has been widely studied. In this work, the effect of precipitation volume fraction on the friction behavior of FeCrNi is studied by molecular dynamics simulation. With the increase of precipitation volume fraction, the average friction coefficient shows an upward trend. When the volume fraction of precipitation is between 2.33% and 3.10%, the wear resistance of FeCrNi would be enhanced after the nanoscratching. When the volume fraction of precipitation is between 2.33% and 3.10%, the normal force is larger, which means that a certain precipitation volume fraction will strengthen FeCrNi. Low precipitation volume fraction can effectively reduce the wear volume and wear rate during scratching, thus effectively reducing frictional force and friction coefficient. The interaction between dislocation and precipitation is an important factor that hinders dislocation propagation, leading to sample strengthening and the increase of wear volume, which is manifested as the increase of normal force and frictional force. The results guide the study of the effect of multiple precipitation on frictional properties and precipitation-dislocation interaction in FeCrNi.
期刊介绍：
Serving the multidisciplinary materials community, the journal aims to publish new research work that advances the understanding and prediction of material behaviour at scales from atomistic to macroscopic through modelling and simulation.
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Modelling and/or simulation across materials science that emphasizes fundamental materials issues advancing the understanding and prediction of material behaviour. Interdisciplinary research that tackles challenging and complex materials problems where the governing phenomena may span different scales of materials behaviour, with an emphasis on the development of quantitative approaches to explain and predict experimental observations. Material processing that advances the fundamental materials science and engineering underpinning the connection between processing and properties. Covering all classes of materials, and mechanical, microstructural, electronic, chemical, biological, and optical properties.
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