纳米材料对再生YG8硬质合金性能的影响  

Effects of Nanomaterials on Properties of Recycled YG8 Cemented Carbide

作　　者：胡冬梅 杜劲[1,2] 苏国胜 王志鹏[1,2] 王金梅 HU Dongmei;DU Jin;SU Guosheng;WANG Zhipeng;WANG Jinmei(School of Mechanical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250300,Shandong,China;Shandong Institute of Mechanical Design and Research,Jinan 250013,Shandong,China;Shandong Ounuowei Numerical Control Tool Co.,Ltd.,Jining 273200,Shandong,China)

机构地区：[1]齐鲁工业大学(山东省科学院)机械工程学部,山东济南250300 [2]山东省机械设计研究院,山东济南250013 [3]山东欧诺威数控刀具有限公司,山东济宁273200

出　　处：《中国钨业》2024年第4期13-19,共7页China Tungsten Industry

基　　金：国家自然科学基金面上项目(52275438)。

摘　　要：碳纳米管(CNTs)、氧化石墨烯(GO)、碳化硅晶须(SiCw)作为陶瓷复合材料的增韧相,能够大大提高复合材料的性能,为了研究CNTs、GO、SiCw对再生YG8硬质合金力学性能和微观组织的影响。本研究采用粉末冶金的方法制备了同一含量不同增韧相的再生YG8硬质合金,并对其物理性能、力学性能和显微组织进行分析。结果表明,含有0.2%SiCw的再生YG8硬质合金的矫顽磁力、密度、硬度、断裂韧性和抗弯强度提升幅度最大,分别提高了30.5%、0.6%、4.7%、10.2%和8.3%,并且晶粒尺寸也最小。Carbon nanotubes(CNTs), graphene oxide(GO), and silicon carbide whiskers(SiCw), serving as toughening phases in ceramic composites, can significantly enhance the properties of the composites. To investigate the effects of CNTs, GO, and Si Cw on the mechanical properties and microstructure of recycled YG8 cemented carbide, this study employed powder metallurgy to fabricate recycled YG8 cemented carbide with the same content but different toughening phases, and analyzed their physical properties, mechanical properties, and microstructure. The results indicate that the recycled YG8 cemented carbide containing 0.2% SiCw exhibits the largest improvements in coercivity, density, hardness,fracture toughness, and flexural strength, with increases of 30.5%, 0.6%, 4.7%, 10.2%, and 8.3%, respectively.Additionally, it has the smallest grain size.

关 键 词：增韧相 再生YG8硬质合金 物理性能 力学性能 显微组织 

分 类 号：TG146.4[一般工业技术—材料科学与工程] TG704[金属学及工艺—金属材料]