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super duplex stainless steels

The Role of Tungsten on the Phase Transformation Kinetics and its Correlation with the Localized Corrosion Resistance of 25Cr Super Duplex Stainless Steels

May 29, 2020 by Mariano Iannuzzi

This investigation demonstrated 2.1 wt% tungsten drastically reduced the kinetics of tertiary phase precipitation in 25Cr super duplex stainless steels. The slow kinetics resulted in a better overall pitting corrosion resistance.

Filed Under: Corrosion Resistant Alloys, Critical potentials, Journal Articles, Library, Localized corrosion, Oil & Gas, Physical Metallurgy, Stainless steels, Temperature, Uncategorized Tagged With: chi phase, Oil&Gas, pitting corrosion, sigma phase, super duplex stainless steels

Hydrogen-Induced Stress Cracking of Swaged Super Duplex Stainless Steel Subsea Components

August 1, 2019 by Mariano Iannuzzi

HISC is the Achilles’ heel of duplex and super duplex stainless steels. In this investigation, we demonstrate the detrimental effects of both cold work (swaging) and anisotropic microstructures on HISC resistance. We believe the findings challenge the validity of the present form of DNV-GL RP F112 as a method to reduce HISC risks.

Filed Under: Environmentally Assisted Cracking, hisc, Hydrogen Embrittlement, Journal Articles, Physical Metallurgy Tagged With: hisc, hydrogen, hydrogen embrittlement, stainless steels, super duplex stainless steels

Use of the critical acidification model to estimate critical localized corrosion potentials of duplex stainless steels – Publication

February 12, 2017 by Mariano Iannuzzi

Can we use Galvele’s critical acidification model to estimate the localized corrosion resistance of engineering stainless steels?
Short answer: yes; long answer: it is complicated.
Find out more in our recent CORROSION Journal article.

Filed Under: Critical potentials, Journal Articles, Oil & Gas, Stainless steels Tagged With: crevice corrosion, critical acidification model, duplex stainless steels, galvele, localized corrosion, Oil&Gas, pit-like, sdss, seawater, super duplex stainless steels

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