Bo Ren, Xiao-Fan Zhang, Rui-Feng Zhao, Hong-Song Zhang
{"title":"TiB2@Ti/CoCrFeNi 高熵合金基复合材料的显微结构和摩擦性能","authors":"Bo Ren, Xiao-Fan Zhang, Rui-Feng Zhao, Hong-Song Zhang","doi":"10.1007/s12540-024-01742-5","DOIUrl":null,"url":null,"abstract":"<p>TiB<sub>2</sub>@Ti/CoCrFeNi high-entropy alloy matrix composite (HEAMC) powders and bulk materials were prepared by mechanical alloying and spark plasma sintering. The microstructure of the powders was characterized, and the microstructure, hardness, and friction properties of the bulk materials were investigated. Results showed that after low-energy ball milling for 8 h, the composite powder presented an ellipsoidal or granular shape with an average particle size of approximately 80 µm. The phase structure was mainly composed of FCC, Ti, and TiB<sub>2</sub> phases. The phase structure of the sintered composite was mainly composed of FCC and a small amount of TiB<sub>2</sub> phases. The microhardness of the composite was 362 HV, which was approximately 188 HV higher than that of the matrix alloy. The average friction coefficient was approximately 0.6664, which was 0.087 lower than that of the matrix alloy. The improvement in the hardness and friction performance of the composite was mainly attributed to the strengthening of grain boundary caused by the enrichment of TiB<sub>2</sub> particles and Cr<sub>2</sub>O<sub>3</sub> along the grain boundary and the solid solution strengthening of Ti. The wear types were mainly abrasive and oxidative wear for the composite and CoCrFeNi matrix alloy.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"99 1","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructure and Friction Properties of TiB2@Ti/CoCrFeNi High Entropy Alloy Matrix Composite\",\"authors\":\"Bo Ren, Xiao-Fan Zhang, Rui-Feng Zhao, Hong-Song Zhang\",\"doi\":\"10.1007/s12540-024-01742-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>TiB<sub>2</sub>@Ti/CoCrFeNi high-entropy alloy matrix composite (HEAMC) powders and bulk materials were prepared by mechanical alloying and spark plasma sintering. The microstructure of the powders was characterized, and the microstructure, hardness, and friction properties of the bulk materials were investigated. Results showed that after low-energy ball milling for 8 h, the composite powder presented an ellipsoidal or granular shape with an average particle size of approximately 80 µm. The phase structure was mainly composed of FCC, Ti, and TiB<sub>2</sub> phases. The phase structure of the sintered composite was mainly composed of FCC and a small amount of TiB<sub>2</sub> phases. The microhardness of the composite was 362 HV, which was approximately 188 HV higher than that of the matrix alloy. The average friction coefficient was approximately 0.6664, which was 0.087 lower than that of the matrix alloy. The improvement in the hardness and friction performance of the composite was mainly attributed to the strengthening of grain boundary caused by the enrichment of TiB<sub>2</sub> particles and Cr<sub>2</sub>O<sub>3</sub> along the grain boundary and the solid solution strengthening of Ti. The wear types were mainly abrasive and oxidative wear for the composite and CoCrFeNi matrix alloy.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3>\\n\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"99 1\",\"pages\":\"\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-08-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals and Materials International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s12540-024-01742-5\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12540-024-01742-5","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Microstructure and Friction Properties of TiB2@Ti/CoCrFeNi High Entropy Alloy Matrix Composite
TiB2@Ti/CoCrFeNi high-entropy alloy matrix composite (HEAMC) powders and bulk materials were prepared by mechanical alloying and spark plasma sintering. The microstructure of the powders was characterized, and the microstructure, hardness, and friction properties of the bulk materials were investigated. Results showed that after low-energy ball milling for 8 h, the composite powder presented an ellipsoidal or granular shape with an average particle size of approximately 80 µm. The phase structure was mainly composed of FCC, Ti, and TiB2 phases. The phase structure of the sintered composite was mainly composed of FCC and a small amount of TiB2 phases. The microhardness of the composite was 362 HV, which was approximately 188 HV higher than that of the matrix alloy. The average friction coefficient was approximately 0.6664, which was 0.087 lower than that of the matrix alloy. The improvement in the hardness and friction performance of the composite was mainly attributed to the strengthening of grain boundary caused by the enrichment of TiB2 particles and Cr2O3 along the grain boundary and the solid solution strengthening of Ti. The wear types were mainly abrasive and oxidative wear for the composite and CoCrFeNi matrix alloy.
期刊介绍：
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
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