Wear-resistant composite material and method of making an article thereof

A method of making a ferrous wear-resistant composite article comprising:

• placing a plurality of abrasive-resistant shot in a mold, said abrasive-resistant shot being limited in carbon content to less than 0.2% by weight;
• depositing a plurality of alloy shot consisting essentially of iron and boron on top of said abrasive-resistant shot, said alloy shot being limited in carbon content to less than 0.2% by weight;
• heating said mold in a substantially inert atmosphere to melt said alloy shot and to cause infiltration thereof fully around said abrasive-resistant shot;
• and
• cooling and removing such composite article from said mold.

A method of making a ferrous wear-resistant composite article for a tool or the like comprising;

• placing a plurality of abrasive-resistant shot in a mold;
• depositing a plurality of alloy shot consisting essentially of iron and boron on top of said abrasive-resistant shot;
• placing said mold in a chamber having an inert atmosphere;
• preheating said mold at approximately 1093.degree. C (2000.degree. F) to obtain a uniform temperature of said shot;
• subjecting said mold to a final heating stage at approximately 1204.degree. C (2200.degree. F) for a relatively short period sufficient to melt said alloy shot and to cause infiltration thereof embracingly around said abrasive-resistant shot;
• and
• cooling and removing such composite article from said mold.