COMPOSITE ARTICLES COMPRISING SPINODAL COPPER-NICKEL-TIN-MANGANESE-PHOSPHORUS ALLOY MATRIX MATERIAL

摘要

A spinodal copper-nickel-tin-manganese alloy is disclosed that contains from 0.001 to about 2 weight percent phosphorus. When combined with small hard particles, the alloy has sufficient fluidity to infiltrate and fill at least 90% of the interstices of the hard particles, resulting in a composite article having superior strength and toughness. This composite article can be used in drilling bits and other cutting tools, either as a support body for cutting elements or as the cutting element itself.

主权项

1. A composite article comprising:
a matrix phase comprising a spinodal alloy; and hard particles dispersed within the matrix phase; wherein the spinodal alloy is a Cu—Ni—Sn—Mn—P alloy comprising:
from about 5 wt % to about 22 wt % nickel;from about 4 wt % to about 10 wt % tin;from about 0.05 wt % to about 0.5 wt % manganese;from 0.001 to about 2 wt % phosphorus; andbalance copper.