首页|Microstructure and properties of coarse-grained WC-10Co cemented carbides with different carbon contents during heat treatments
Microstructure and properties of coarse-grained WC-10Co cemented carbides with different carbon contents during heat treatments
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The effects of cryogenic treatment(CT)and tem-pering-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,rel-ative magnetic saturation,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 pre-cipitation of metastable nanoparticles WxCoyCz in the binder during the heat treatments of CT and TCT.With the simul-taneous combination of microstructure and nanoparticle-re-inforced binder,a dramatically improved combination of hardness and wear resistance of the samples after TCT has been achieved.
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