New process of manufacturing cemented carbide and a product obtained thereof
US-2016122250-A1 · May 5, 2016 · US
Cemented carbide with alternative binder
US11213892B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11213892-B2 |
| Application number | US-201716080327-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2017 |
| Priority date | Feb 29, 2016 |
| Publication date | Jan 4, 2022 |
| Grant date | Jan 4, 2022 |
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Abstract
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The present disclosure relates to a cutting tool including a cemented carbide substrate having WC, gamma phase and a binder phase. The substrate is provided with a binder phase enriched surface zone, which is depleted of gamma phase, wherein no graphite and no ETA phase is present in the microstructure and wherein the binder phase is a high entropy alloy.
First claim
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The invention claimed is: 1. A cutting tool comprising a cemented carbide substrate, wherein said substrate comprises a microstructure of WC, a gamma phase comprising (W,M)C and/or (W,M)(C,N) wherein M is one or more of Ti, Ta, Nb, Hf, Zr and V, and a binder phase, said substrate including a binder phase enriched surface zone which is depleted of gamma phase, wherein no graphite and no eta phase is present in the microstructure of said substrate and wherein the binder phase is a high entropy alloy comprising 4 or more elements selected from Co, Cr, Cu, W, Fe, Ni, Mo and Mn wherein the amount of each element is between 5 to 35 at % of the total amount of the high entropy alloy. 2. The cutting tool according to claim 1 , wherein at least one of the elements in the high entropy alloy is selected from Cr, Fe, Ni and Co. 3. The cutting tool according to claim 1 , wherein at least two of the elements in the high entropy alloy are selected from Cr, Fe, Ni and Co. 4. The cutting tool according to claim 1 , wherein the high entropy alloy includes Co, Cr, Fe and Ni. 5. The cutting tool according to claim 1 , wherein the high entropy alloy includes Co, Cu, Cr, Fe and Ni. 6. The cutting tool according to claim 1 , wherein a thickness of the surface zone is between 2 and 100 μm. 7. The cutting tool according to claim 1 , wherein an amount of the gamma phase is between 3 to 25 vol %. 8. The cutting tool according to claim 1 , wherein the substrate is provided with a coating.
Assignees
Inventors
Classifications
Titanium nitride · CPC title
Titanium carbide nitride (TiCN) · CPC title
Chromium carbide · CPC title
Processes characterised by the sequence of their steps · CPC title
Nitride · CPC title
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- What does patent US11213892B2 cover?
- The present disclosure relates to a cutting tool including a cemented carbide substrate having WC, gamma phase and a binder phase. The substrate is provided with a binder phase enriched surface zone, which is depleted of gamma phase, wherein no graphite and no ETA phase is present in the microstructure and wherein the binder phase is a high entropy alloy.
- Who is the assignee on this patent?
- Sandvik Intellectual Property
- What technology area does this patent fall under?
- Primary CPC classification B23B27/148. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 04 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).