Electrochemical methods of measuring pitting potentials (Epit) were used to study the pitting resistance of type 17% Cr-4% Ni (17-4, UNS S17400) precipitation hardenable (PH) stainless steel (SS) weldments. The main objectives were to evaluate the pitting resistance of the base metal, the heat-affected zone (HAZ), and the weld metal portions of 17-4 PH SS welds welded autogenously using the gas tungsten arc welding (GTAW) process. Effects of different preweld and postweld heat treatments (PWHT) and of the weld heat input on pitting resistance were studied. Results showed a solution-treated base metal had a relatively lower pitting resistance. In contrast, aging preceded by solution treatment improved pitting resistance. Direct peak aging after welding improved pitting resistance of the weld metals, but it decreased resistance of the HAZ. Welding with relatively lower weld heat input decreased the pitting resistance of the weld metals, but the reverse occurred in the case of the HAZ. Solution treatment followed by peak aging nullified effects of the weld heat input and the preweld heat treatments on pitting resistance of the different portions of the weldment. This heat treatment produced relatively higher pitting resistance in all portions of the weldment.
Skip Nav Destination
Article navigation
1 August 1995
Research Article|
August 01 1995
Pitting Behavior of Type 17-4 PH Stainless Steel Weldments Available to Purchase
Online ISSN: 1938-159X
Print ISSN: 0010-9312
NACE International
1995
CORROSION (1995) 51 (8): 586–592.
Citation
K.S. Raja, K.P. Rao; Pitting Behavior of Type 17-4 PH Stainless Steel Weldments. CORROSION 1 August 1995; 51 (8): 586–592. https://doi.org/10.5006/1.3293618
Download citation file:
Citing articles via
Suggested Reading
Effect of Applied Potentials on Environmental Cracking Behavior of 17-4 PH Stainless Steel Weldments
CORROSION (July,1995)
Environmentally Assisted Cracking Behavior of 18Ni 250 Maraging Steel Welds Obtained with and Without Flux in Chloride Media
CORROSION (November,2020)
Influence of Heat Treatment and Grain Shape on Exfoliation Corrosion of Al-Li Alloy 8090
CORROSION (October,1993)