Wear resistant articles and applications thereof
Abstract:
Wear resistant articles are described herein which, in some embodiments, mitigate CTE differences between wear resistant components and metallic substrates. In one aspect, an article comprises a layer of sintered cemented carbide bonded to a layer of iron-based alloy via a metal-matrix composite bonding layer, wherein coefficients of thermal expansion (CTE) of the sintered cemented carbide layer, metal matrix composite bonding layer, and iron-based alloy layer satisfy the relation: x = (  C ⁢ ⁢ T ⁢ ⁢ E ⁢ ⁢ WC - C ⁢ ⁢ T ⁢ ⁢ E ⁢ ⁢ M ⁢ ⁢ M ⁢ ⁢ C  ) (  C ⁢ ⁢ T ⁢ ⁢ E ⁢ ⁢ M ⁢ ⁢ M ⁢ ⁢ C - C ⁢ ⁢ T ⁢ ⁢ E ⁢ ⁢ Fe  ) wherein 0.5≤x≤2 and CTE WC, CTE MMC and CTE Fe are the CTE values for the sintered cemented carbide, metal matrix composite, and iron-based alloy in 1/K respectively at 900° C. to 1100° C.
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