The allotropic transformation process of the γ-phase in WC-Co cemented carbides has been explored.Theconcepts of γ-grain and the γ-domain have been proposed forward:The γ-domain is the residual FCC-typeβ-Co grain...The allotropic transformation process of the γ-phase in WC-Co cemented carbides has been explored.Theconcepts of γ-grain and the γ-domain have been proposed forward:The γ-domain is the residual FCC-typeβ-Co grain that failed to transform when cooling alloy sample and γ-base is the HCP-type x-Co transformedmainly by means of diffusion,the outline of the γ-grain is consistent with the newly fromed β-Co grain formedat high temperature.The quantity and distribution of γ-grain domain are related to the cooling rate after sinter-ing and influence the alloys properties.展开更多
文摘The allotropic transformation process of the γ-phase in WC-Co cemented carbides has been explored.Theconcepts of γ-grain and the γ-domain have been proposed forward:The γ-domain is the residual FCC-typeβ-Co grain that failed to transform when cooling alloy sample and γ-base is the HCP-type x-Co transformedmainly by means of diffusion,the outline of the γ-grain is consistent with the newly fromed β-Co grain formedat high temperature.The quantity and distribution of γ-grain domain are related to the cooling rate after sinter-ing and influence the alloys properties.
