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Hydrogen Stress Cracking

Hydrogen Embrittlement of Nickel Alloy Steels

June 11, 2014 by Mariano Iannuzzi

This post illustrates a possible sulfide stress cracking mechanisms at the open circuit potential for low alloy steels.

Filed Under: Announcements, Low alloy steels, Sulfide Stress Cracking Tagged With: carbon steel, hydrogen embrittlement, Hydrogen Stress Cracking, Oil&Gas, ssc

Hydrogen diffusion control during stress corrosion cracking of magnesium alloy AZ31B in chloride solutions – Abstract

November 26, 2013 by Mariano Iannuzzi

SCC of AZ31B alloy was studied in NaCl solutions at different potentials and chloride concentrations using the slow strain rate technique. A combination of pre-exposure tests followed by immediate straining or straining after a dry air exposure delay helped to weight the relative importance of anodic damage accumulation versus increased hydrogen charging during open-circuit potential pre-exposure. The dependence of ductility with pre-exposure time and the fracture surface of embrittled samples suggest that hydrogen embrittlement of AZ31B was controlled by hydrogen diffusion.

Filed Under: Abstracts, Environmentally Assisted Cracking, Magnesium alloys, Stress corrosion cracking Tagged With: CORROSION/14, EAC, HSC, Hydrogen Stress Cracking, Magnesium alloys, SCC, Stress Corrosion Cracking

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