Earth-boring bits and other parts comprising cemented carbide

摘要

The invention provides an earth-boring article (50), comprising at least one cemented carbide piece (52) comprising a cemented carbide volume that is at least 5% of a total volume of the earth-boring article (50), a metal matrix composite (54) binding the at least one cemented carbide piece (52) into the earth-boring article (50), wherein the metal matrix composite (54) comprises hard particles dispersed in a matrix comprising at least one of a metal and a metallic alloy, and a non-cemented carbide piece (59) comprising at least one of a metal and a metallic alloy, wherein the non-cemented carbide piece (59) is bound to the earth boring article (50) by the matrix of the metal matrix composite (54).