US 11,850,663 B2
Cemented carbide with alternative binder
Jose Luis Garcia, Stockholm (SE); Bartek Kaplan, Sundbyberg (SE); and Veronica Collado Cipres, Hagersten (SE)
Assigned to AB SANDVIK COROMANT, Sandviken (SE)
Appl. No. 17/252,939
Filed by AB SANDVIK COROMANT, Sandviken (SE)
PCT Filed Jun. 26, 2019, PCT No. PCT/EP2019/067026
§ 371(c)(1), (2) Date Dec. 16, 2020,
PCT Pub. No. WO2020/002442, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 18180915 (EP), filed on Jun. 29, 2018.
Prior Publication US 2021/0138546 A1, May 13, 2021
Int. Cl. B22F 5/00 (2006.01); B22F 3/24 (2006.01); C22C 29/06 (2006.01); C22C 29/08 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
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
OG exemplary drawing
 
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:

OG Complex Work Unit Math
wherein the wt % Al and the wt % Ni is the amount present in the cemented carbide substrate.