Titanium carbide-based powder metallurgy material and composite casting product comprising same

The invention discloses a titanium carbide-based powder metallurgy material and a composite casting product containing the same, and belongs to the field of hard alloy. The titanium carbide-based powder metallurgy material comprises a core wear-resistant layer and a coating layer metallurgically bonded with the core wear-resistant layer, the core wear-resistant layer is made of a high-hardness titanium carbide series powder metallurgy material, the coating layer is made of a high-toughness titanium carbide series powder metallurgy material, and the core wear-resistant layer and the coating layer are pressed and sintered together. And the titanium carbide-based powder metallurgy material with the gradient change of the interface stress is formed. According to the titanium carbide-based powder metallurgy material, by changing and exploring the matching relation of all the raw material components in a titanium carbide-based powder metallurgy product, the metallurgy material has a composite structure with gradien