NICKEL ALUMINUM BRONZE OVERLAY DEPOSIT USING GAS METAL ARC WELDING PROCESS AND 0.5 MM DIAMETER WIRE

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Authors
  1. Nicholson, C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Fleet Technology Ltd, Kanata ONT (CAN)
Abstract
Single layer and double layer nickel aluminum bronze weld overlay deposits have been made using the pulsed gas metal arc welding process and 0.5 mm diameter wire. The objective was to see if the weld heat input could be reduced and deposit hardness increased compared to deposits made in a previous study using 0.89 mm diameter wire. In the investigation, using the power source and wire feeder available, the heat input cold be reduced from 3,330 J/cm to 2,710 J/cm and this was accompanied by an average increase in hardness of about 20 HV 0.1. But for the wire feeder limitation, the heat input could have been reduced to 2100 J/cm. If the cavitation tests at DREA indicate that the 20 HV 0.1 increase in hardness has led to a significant improvement in corrosion resistance, it would be useful to make some additional overlay welds at 2,100 J/cm heat input and evaluate their cavitation corrosion resistance.
Keywords
Nickel aluminum bronze;Laser cladding;Pulsed gas metal arc welding (GMAW)
Report Number
DREA-CR-97-417 — Contractor Report
Date of publication
01 May 1997
Number of Pages
13
DSTKIM No
98-00401
CANDIS No
507000
Format(s):
Hardcopy;Document Image stored on Optical Disk

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