SYMPOSIA PAPER Published: 01 January 1988
STP26202S

Galvanic Corrosion Resistance of Welded Dissimilar Nickel-Base Alloys

Source

A program for evaluating the corrosion resistance of various dissimilar welded nickel-base alloy combinations is outlined. Alloy combinations included Alloy ALLCORR, Alloy C-276, Alloy 72, and Alloy 690. The gas tungsten arc weld (GTAW) process involved both high and minimum heat input conditions. Specimens were evaluated in the as-welded condition, as well as after having been aged at various conditions of time and temperature. These were judged to be most representative of process upset conditions, which might be expected. Corrosion testing evaluated resistance to an oxidizing acid and a severe service environment in which the alloy combinations might be used. Mechanical properties are also discussed.

Author Information

Corbett, RA
Corrosion Testing Laboratories, Inc., Newark, DE
Morrison, WS
Corrosion Testing Laboratories, Inc., Newark, DE
Snyder, RJ
E. I. du Pont de Nemours & Co., Inc., Wilmington, DE
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Details
Developed by Committee: G01
Pages: 235–245
DOI: 10.1520/STP26202S
ISBN-EB: 978-0-8031-5049-2
ISBN-13: 978-0-8031-0981-0