Yang Gao , Xiaoting Li , Bo-Yu Li , Sheng-Qiang Deng , De-Jian Sun , Xiao-qin Guo , Lei Fan , Linan An
{"title":"摆动频率对热摆动冲压制备的 WC-Co 硬质合金微观结构和性能的影响","authors":"Yang Gao , Xiaoting Li , Bo-Yu Li , Sheng-Qiang Deng , De-Jian Sun , Xiao-qin Guo , Lei Fan , Linan An","doi":"10.1016/j.ijrmhm.2024.106922","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, a novel hot oscillating pressing (HOP) was used to prepared WC-Co cemented carbides under various oscillation frequencies. The effects of sintering frequencies on the density, microstructure, and mechanical properties of cemented carbides were systematically investigated. The results show that applying a specific oscillation frequency during the sintering process can greatly aid in the densification process, improve the uniformity of microstructure, help the grain refinement, and prevent the formation of abnormally large WC grains. The mechanical properties of the alloys showed a noticeable improvement as the oscillation frequency increased. The hardness and fracture toughness of cemented carbides were not significantly improved when the oscillation frequency was ≥5 Hz, with the optimal values reaching 1913 kg/m<sup>2</sup> and 13.11 MPa.m<sup>1/2</sup>, in turn. The improvement in mechanical properties of cemented carbide can be mainly attributed to higher density, grain refinement, microstructure uniformity and the increase of dislocation/twins caused by plastic deformation.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"125 ","pages":"Article 106922"},"PeriodicalIF":4.2000,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of oscillation frequency on microstructure and properties of WC-Co cemented carbide prepared by hot oscillating pressing\",\"authors\":\"Yang Gao , Xiaoting Li , Bo-Yu Li , Sheng-Qiang Deng , De-Jian Sun , Xiao-qin Guo , Lei Fan , Linan An\",\"doi\":\"10.1016/j.ijrmhm.2024.106922\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, a novel hot oscillating pressing (HOP) was used to prepared WC-Co cemented carbides under various oscillation frequencies. The effects of sintering frequencies on the density, microstructure, and mechanical properties of cemented carbides were systematically investigated. The results show that applying a specific oscillation frequency during the sintering process can greatly aid in the densification process, improve the uniformity of microstructure, help the grain refinement, and prevent the formation of abnormally large WC grains. The mechanical properties of the alloys showed a noticeable improvement as the oscillation frequency increased. The hardness and fracture toughness of cemented carbides were not significantly improved when the oscillation frequency was ≥5 Hz, with the optimal values reaching 1913 kg/m<sup>2</sup> and 13.11 MPa.m<sup>1/2</sup>, in turn. The improvement in mechanical properties of cemented carbide can be mainly attributed to higher density, grain refinement, microstructure uniformity and the increase of dislocation/twins caused by plastic deformation.</div></div>\",\"PeriodicalId\":14216,\"journal\":{\"name\":\"International Journal of Refractory Metals & Hard Materials\",\"volume\":\"125 \",\"pages\":\"Article 106922\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2024-10-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Refractory Metals & Hard Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0263436824003706\",\"RegionNum\":2,\"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":"International Journal of Refractory Metals & Hard Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263436824003706","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of oscillation frequency on microstructure and properties of WC-Co cemented carbide prepared by hot oscillating pressing
In this study, a novel hot oscillating pressing (HOP) was used to prepared WC-Co cemented carbides under various oscillation frequencies. The effects of sintering frequencies on the density, microstructure, and mechanical properties of cemented carbides were systematically investigated. The results show that applying a specific oscillation frequency during the sintering process can greatly aid in the densification process, improve the uniformity of microstructure, help the grain refinement, and prevent the formation of abnormally large WC grains. The mechanical properties of the alloys showed a noticeable improvement as the oscillation frequency increased. The hardness and fracture toughness of cemented carbides were not significantly improved when the oscillation frequency was ≥5 Hz, with the optimal values reaching 1913 kg/m2 and 13.11 MPa.m1/2, in turn. The improvement in mechanical properties of cemented carbide can be mainly attributed to higher density, grain refinement, microstructure uniformity and the increase of dislocation/twins caused by plastic deformation.
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
