In context of acceptability of 17-4 PH in sour service, an literature survey of complex metallurgy of this grade was done following a mechanical rupture in service. In addition, three 17-4 PH materials were studied in terms of microstructure, mechanical properties and susceptibility to sulfide stress cracking.
Nickel-base alloys 718, 725, and 925 are commonly used in oil and natural gas production. Being heavily alloyed multi-component systems; these materials require special consideration for processing and heat treatments. This paper shows the effect of intergranular precipitates on mechanical properties and slow strain rate (SSR) test results in sour oil patch environments.
Stress Corrosion Cracking in the weld and heat affected zones of Duplex Stainless Steels has been experienced in different industries. In this paper, an attempt has been made to study the various aspects of this type of corrosion, brought about by welding. Results show duplex stainless steel base metal is also susceptible.
Corrosion and stress corroson cracking (SCC) susceptibility of duplex stainless steels (DSS) depend on alloy composition, microstructure and temperature. In this study the effect of sulfide containing caustic environment and material properties (DSS composition and microstructure) on the corrosion and SCC of DSS in pulping liquors (synthetic white liquor) was evaluated.