Microstructure evolution and plastic deformation mechanisms of the ultra-coarse cemented carbide compressed at different temperatures were studied based on designed experiments and a proposed energy model. The cemented carbide compressed at high temperature exhibited larger strain, which resulted from the generation and movement of high density of dislocations in WC grain. The energies stored in WC and Co phases and dissipated by heat energy in the deformation were quantified. The larger energy stored in WC grain than that in Co phase indicates significant contribution of the hard matrix to deformation of the ultra-coarse cemented carbide.

中文翻译：

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基于能量分析的超粗硬质合金塑性变形机理研究

基于设计实验和提出的能量模型，研究了在不同温度下压缩的超粗硬质合金的组织演变和塑性变形机理。高温压缩的硬质合金表现出较大的应变，这是由于WC晶粒中高位错密度的产生和运动所致。量化存储在WC和Co相中并在变形中被热能耗散的能量。WC晶粒中储存的能量大于Co相中的能量，表明硬质基体对超粗硬质合金的变形有重要贡献。