What is it about?
In this publication we review more than 40 years of research on the effects of nickel additions to low alloy steels regarding sulfide stress cracking resistance.
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Why is it important?
Nickel additions to low alloy steels improve strength, toughness and fatigue life, while lowering ductile-brittle transition temperatures with l
Perspectives
We strongly believe that ISO 15156 should not impose a limit on nickel (or any other main alloying element such as Cr and Mo). The standard should, in our view, impose a strict metallurgical control to assure the absence of fresh untempered martensite, which is the causative factor of most sulfide stress cracking failures.
Dr Mariano Iannuzzi
Norwegian University of Science and Technology
Read the Original
This page is a summary of: Sulfide stress cracking of nickel-containing low-alloy steels, Corrosion Reviews, January 2014, De Gruyter,
DOI: 10.1515/corrrev-2014-0027.
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Resources
Nickel steels - About Corrosion
Publication Blog Post
Active path corrosion
Illustration of a possible crack initiation mechanism at Eoc.
Effect of nickel on phase transformation kinetics
This blog post illustrates how nickel retards diffusion assisted transformations, improving hardenability.
Are cracks born from pits
This blog post discusses the conditions that lead to environmental crack initiation in sour environments.
Contributors
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