Microstructure and properties of coarse-grained WC-10Co cemented carbides with different carbon contents during heat treatments  

作　　者：Yuan-Feng Xie Xing-Cheng Xie Zhong-Wu Li Rui-Jun Cao Zhong-Kun Lin Qing Li Chen-Guang Lin 

机构地区：[1]Powder Metallurgy and Special Materials Research Department,General Research Institute for Nonferrous Metals,Beijing,100088,China

出　　处：《Rare Metals》2024年第4期1786-1792,共7页稀有金属（英文版）

基　　金：financially supported by the General Research Institute for Nonferrous Metals Youth Science Foundation(No.52147)。

摘　　要：The effects of cryogenic treatment(CT)and tempering-cryogenic treatment(TCT)on the microstructure and properties of coarse-grained WC-10Co cemented carbides with different carbon contents were researched.The binder phase,WC mean grain sizes,W solubility in the binder,relative magnetic s aturation,densities,hardness,wear resistance and second phase precipitation of cemented carbides with different heat treatments were discussed.The results show that there are significant changes of microstructure and properties in the samples with CT and TCT,especially due to the precipitation of metastable nanoparticles W_(x)Co_(y)C_(z) in the binder during the heat treatments of CT and TCT.With the simultaneous combination of microstructure and nanoparticle-reinforced binder,a dramatically improved combination of hardness and wear resistance of the samples after TCT has been achieved.

关 键 词：Cryogenic treatment TEMPERING Coarsegrained cemented carbide Carbon content Nanoparticlereinforced binder 

分 类 号：TG156[金属学及工艺—热处理] TG135.5[金属学及工艺—金属学]