Cemented carbides based on WC pre-alloyed with Cr or Ta

(W1‐x,Mx)C carbides with desired combinations of compatible density and properties – A first‐principles study

“…The calculated elastic constants of mono-WC are in good agreement with reported values obtained using the ab initio method. 18,45 As shown in Table 3, all the substituted metals more or less decrease the elastic constants of WC. However, the decreases in the elastic constants caused by Cr, Mn, Fe,…”

“…However, such replacement might alter the original crystal structure with unexpected changes in mechanical properties. As a matter of fact, some experimental studies with such attempts can be found in the literature, which was conducted to dope metals into WC, while maintaining its hexagonal structure (HCP) 14–22 . The primary objective of these studies is to modify the hardness of WC rather than its density and other physical properties.…”

“…As a matter of fact, some experimental studies with such attempts can be found in the literature, which was conducted to dope metals into WC, while maintaining its hexagonal structure (HCP). [14][15][16][17][18][19][20][21][22] The primary objective of these studies is to modify the hardness of WC rather than its density and other physical properties. Schubert et al 14 patented a method for producing doped hexagonal (W, Me)C raw powders, where Me represents some transition metals.…”

“…Schubert et al 14 patented a method for producing doped hexagonal (W, Me)C raw powders, where Me represents some transition metals. Weidow et al [16][17][18] reported Ta-doped WC through the two-step carburization process. However, Young's moduli of the doped WC crystals were significantly lower than that of undoped WC.…”