METHOD OF APPLYING A METALLIC ALLOY OVERLAY USING FEEDSTOCK POWDER AND IRON ELECTRODE FOR PRODUCTION OF HIGH HARDNESS OVERLAYS

• Main Authors: MEACHAM, BRIAN, E, BRANAGAN, DANIEL, JAMES, MERKLE, BRIAN, D, KIILUNEN, WILLIAM, D, PARATORE, DAVIS
• Format: Patent
• Language: English; French; German
• Published: 20.06.2012
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A method of applying a metallic alloy overlay including providing an iron based feedstock powder including 10 to 75 weight percent iron and manganese, 10 to 60 weight percent of chromium, 1 to 30 weight percent of an interstitial element selected from boron, carbon, silicon or combinations thereof, 0 to 40 weight percent of a transition metal selected from molybdenum, tungsten or combinations thereof and 1 to 25 weight percent niobium. The method also includes providing an electrode including at least 50 weight percent iron and depositing a weld overlay with the feedstock powder and the electrode to create a metallic alloy exhibiting a grain size in the range of 1,000 mum or less.