CPC B22F 5/00 (2013.01) [B22F 3/24 (2013.01); C22C 29/067 (2013.01); C22C 29/08 (2013.01); B22F 2003/242 (2013.01); B22F 2005/001 (2013.01); B22F 2207/05 (2013.01); B22F 2302/15 (2013.01); B22F 2999/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01)] | 8 Claims |
1. A cutting tool comprising a cemented carbide substrate including tungsten carbide and 3 to 20 wt % binder, the binder including intermetallic y′-Ni3Al-precipitates having an average grain size of between 10 and 1000 nm embedded in a substitutional solid solution matrix having Al and Ni with a weight ratio Al/Ni of between 0.03 to 0.10, wherein a total amount of Ni and Al is between 80 to 95 wt % of a total binder and wherein the cemented carbide substrate includes a volume fraction of eta phase of between 0.8 and 8 vol % and a total carbon content in the cemented carbide substrate, C (wt %), that is below a value X, where X is given by the following equation:
wherein the wt % Al and the wt % Ni is the amount present in the cemented carbide substrate.
|