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US 10,851,444 B2Granted
Non-magnetic, strong carbide forming alloys for powder manufacture
AssigneeOerlikon Metco (US) Inc.
InventorsJames Vecchio, Justin Lee Cheney
Life of this patent
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Abstract
Disclosed herein are embodiments of non-magnetic, strong carbide forming alloys. In particular, the alloys can be advantageously used for powder manufacturing. Embodiments of the disclosure can have low FCC-BCC transition temperatures in combination with hard particles having a hardness of 1000 Vickers or greater. The alloys can be used in conjunction with, for example, drill pipe tool joints, drill collars, down hole stabilizers, or oilfield components, particularly as a hardbanding component.
Claims19
An alloy comprising:
- a matrix having a FCC-BCC transition temperature at or below 950K;
- and
- extremely hard particles exhibiting a hardness of 1000 Vickers or greater, the extremely hard particles having:
- an extremely hard particle fraction of 5 mole % or greater;
- and
- an extremely hard particle melt range of 200K or less;
- wherein the alloy comprises Fe and, in weight percent:
- C:
- 2.25 to 4.95;
- Cr:
- 9 to 18.15;
- Mn:
- 7.65 to 15.95;
- and
- V:
- 9.0 to 17.6.
13 more elements
An alloy comprising:
- Fe;
- C:
- 2.25 to 4.95;
- Cr:
- 9 to 18.15;
- Mn:
- 7.65 to 15.95;
- and
- V:
- 9.0 to 17.6
- a matrix comprising at least 90% volume fraction austenite;
- and
- extremely hard particles exhibiting a hardness of 1000 Vickers or greater, the extremely hard particles having a fraction of 5 volume % or greater;
- wherein the matrix does not contain any extremely hard particles that begin to form at a temperature greater than 200K above a formation temperature of the matrix.
11 more elements
Dependencies are inferred from the claim text.