High performance milling and gear hobbing by means of cermet tools with a tough (Ti,W,Ta)(C,N)-Co,Ni,W composition

Effect of partial substitution of Cr for Ni on densification behavior, microstructure evolution and mechanical properties of Ti(C,N)–Ni-based cermets

“…For the practical applications, Mo or/and W is indispensable for Ti(C,N)-Ni-based cermets to enhance wetting via the formation of the rim of Ti(C,N) grains and to refine Ti(C,N) grains, resulting in the improvement of mechanical properties and tribological properties [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Co is often introduced to substitute for a part or the whole of Ni as metallic binder to improve TRS and fracture toughness, due to good wetting of liquid Co on TiC and Ti(C,N) particles [2,3,[13][14][15][16]20]. In addition, NbC or TaC is introduced to improve hot hardness and thermal shock resistance [2,20], and Cr 3 C 2 is introduced to improve TRS, due to the increase of the plasticity of the rims of Ti(C,N) grains [21].…”

Microstructure and mechanical properties of Mo-free Ti(C,N)-based cermets with Ni–xCr binders

“…Ti(C,N)-based cermets have widely been used as cutting tool materials in recent several decades, due to their excellent wear resistance, creep resistance and thermal stability as well as low density, compared with WC-based hardmetals [1][2][3][4][5][6][7][8][9][10][11][12][13]. Cutting tools made of Ti(C,N)-based cermets are especially suitable for high speed finishing and rough-finishing of carbon steels, stainless steels and alloy steels [3][4][5][6][7][9][10][11][12][13].…”

“…Cutting tools made of Ti(C,N)-based cermets are especially suitable for high speed finishing and rough-finishing of carbon steels, stainless steels and alloy steels [3][4][5][6][7][9][10][11][12][13]. In addition, Ti(C,N)-based cermets are promising materials for forming tools, rolling mills, extrusion dies and punches, and wear parts such as mechanical seal rings, bearings, valves and jet nozzles, due to their unique characteristics [2,14].…”

“…Secondary carbides are added to adjust physical and mechanical properties of Ti(C,N)-based cermets, in order to meet specific requirements of various work conditions. Mo 2 C (Mo) and WC are effective ingredients to improve wetting of Ni-based binder phase on Ti(C,N), and to inhibit growth of Ti(C,N) grains, thus leading to the improvement of mechanical properties and wear resistance of Ti(C,N)-based cermets [3,[6][7][8][9][10][11][12][13][14][15][16][17]. Cr 3 C 2 contributes to improve transverse rupture strength and corrosion resistance in acid solutions of Ti(C,N)-based cermets [16,17].…”

“…Cr 3 C 2 contributes to improve transverse rupture strength and corrosion resistance in acid solutions of Ti(C,N)-based cermets [16,17]. TaC, NbC and (Ta,Nb)C can improve thermal shock resistance and plastic deformation resistance of Ti(C,N)-based cermets [1,6,7,9,13,14,18,19]. In addition, the mixture Ni and Co, and even pure Co are used as metal binder to further improve transverse rupture strength and fracture toughness of Ti(C,N)-based cermets, due to good wetting of Co on Ti(C,N) grains [4,6,7,9,13,18,19].…”