Liquid-metal-embrittlement resistant superabrasive compact, and related drill bits and methods

摘要

A superabrasive compact (e.g., a polycrystalline diamond compact) including a substrate and at least one feature for reducing the susceptibility of the substrate to liquid metal embrittlement during brazing operations is disclosed. The superabrasive compact may include a region between the substrate and a superabrasive table in which residual tensile stresses are located. The at least one feature may be disposed proximate to the region between the substrate and the superabrasive table in which residual tensile stresses are located.

主权项

1. A superabrasive compact, comprising:
a superabrasive table; a substrate including an interfacial surface bonded to the superabrasive table, a base surface, and at least one peripheral surface extending between the base surface and the interfacial surface; and at least one liquid-metal-embrittlement-susceptibility-reducing feature including at least one groove formed in the at least one peripheral surface of the substrate at least proximate to the interfacial surface thereof, the at least one groove of the at least one liquid-metal-embrittlement-susceptibility-reducing feature being at least partially unfilled and being positioned and configured to be exposed to a braze alloy when the substrate is brazed to a body.