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Environmentally Assisted Cracking

Call for Abstracts – 2020 MSE Congress

January 15, 2020 by Mariano Iannuzzi

We are calling for abstracts for the Environmentally assisted cracking of high-strength materials Symposium at the 2020 MSE Congress.

Filed Under: Announcements, Call for papers, Hydrogen Embrittlement Tagged With: Announcements, conferences

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

Is it a pit or is it a crack?

January 16, 2019 by Mariano Iannuzzi

This article describes current industry practices to catalog features observed after sulfide stress cracking testing. The article also introduces a quantitative criterion to determine the maximum allowable defect size based on fracture mechanics principles.

Filed Under: Sulfide Stress Cracking Tagged With: low alloy steels, Oil&Gas, ssc, sulfide stress cracking

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

Materials and corrosion trends in offshore and subsea oil and gas production – Publication

August 8, 2017 by Mariano Iannuzzi

In this article, we discuss materials and corrosion research topics that could have a transformative effect on the business. In particular, we discuss how scientists and engineers could push the boundaries of existing technologies, learning from the experience gained by other industries such as the nuclear, aerospace, and defense sectors.

Filed Under: Hydrogen Embrittlement, Journal Articles, Nickel Alloys, Stainless steels, Stress corrosion cracking, Sulfide Stress Cracking Tagged With: corrosion resistant alloys, hydrogen, Hydrogen Stress Cracking, localized corrosion, materials selection, nanoindentation, oil & gas, sour service

The history of NACE MR-0175, ISO 15156, and the 1% nickel limit – Timeline

May 21, 2017 by Mariano Iannuzzi

This blog entry presents the development of the NACE MR-0175 in a historical perspective alongside research advancements in physical metallurgy and sulfide stress cracking.

Filed Under: Environmentally Assisted Cracking, Hydrogen Embrittlement, Oil & Gas, OpenLab!, Sulfide Stress Cracking, Timelines Tagged With: iso 15156, sour service, ssc, sulfide stress cracking, timelines

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