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hydrogen embrittlement

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

Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels – Publication.

April 26, 2018 by Mariano Iannuzzi

This is the first of a series of articles on the effect of nickel on the hydrogen embrittlement resistance of low alloy steels. In this paper, we investigated how nickel in solid solution in the ferrite phase affected hydrogen permeation.

Filed Under: Hydrogen Embrittlement, Journal Articles, Physical Metallurgy, Sulfide Stress Cracking Tagged With: hydrogen, hydrogen embrittlement, iso 15156, low alloy steels, permeation

Pre-exposure embrittlement and stress corrosion cracking of magnesium alloy AZ31B in chloride solutions – Publication

April 11, 2017 by Mariano Iannuzzi

In this manuscript, we investigate the influence of hydrogen on the environmentally assisted cracking of the high-strength magnesium alloy AZ31B.​

Filed Under: Environmentally Assisted Cracking, Hydrogen Embrittlement, Journal Articles, Magnesium alloys, Stress corrosion cracking Tagged With: az31b, hydrogen, hydrogen embrittlement, Hydrogen Stress Cracking, Magnesium alloys, publications, Stress Corrosion Cracking

Hydrogen Embrittlement of Industrial Components: Prediction, Prevention, and Models – Publication

March 21, 2017 by Milos Djukic

Hydrogen embrittlement is a common, dangerous, and poorly understood cause of failure in many metal alloys. This article presents a model based on the correlation of mechanical properties to scanning electron microscopy fractography analysis of fracture surfaces in the presence of simultaneously active hydrogen embrittlement micro-mechanisms.

Filed Under: Hydrogen Embrittlement, Journal Articles, Low alloy steels, Oil & Gas, Physical Metallurgy, Uncategorized Tagged With: carbon steel, hydrogen embrittlement, industrial components, journal-articles, pipelines, publications

Hydrogen Embrittlement of Magnesium and Magnesium Alloys: A Review – Publication

February 6, 2017 by Mariano Iannuzzi

In this article, we present and debate the various hydrogen embrittlement and stress corrosion cracking mechanisms of magnesium and magnesium alloys.

Filed Under: Journal Articles, Magnesium alloys Tagged With: aerospace, hydrogen embrittlement, Magnesium alloys, Stress Corrosion Cracking

Are cracks born from pits?

January 31, 2016 by Mariano Iannuzzi

This article describes the different forms of environmentally assisted cracking that can affect low alloy steels and corrosion resistant alloys in the oil & gas industry.

Filed Under: Low alloy steels, Stress corrosion cracking, Sulfide Stress Cracking Tagged With: corrosion resistant alloys, CRA, hydrogen, hydrogen embrittlement, Hydrogen Stress Cracking, las, low alloy steels, Oil&Gas, SCC, ssc, sulfide stress cracking

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