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Mariano Iannuzzi

Effect of Thermal Treatments on the Localized Corrosion Behavior of Alloy 718 (UNS N07718)

December 2, 2013 by Mariano Iannuzzi

What is the localized corrosion resistance of the Nickel alloy 718 (UNS N07718) in oxidizing chloride containing environments like seawater? This articles gives some clues.

Filed Under: Abstracts, Corrosion Resistant Alloys, Critical potentials, Fundamentals, Localized corrosion, Nickel Alloys Tagged With: ASTM G48, CORROSION/14, CRA, EAC, localized corrosion, materials selection, nickel alloys, Oil&Gas

Added Markdown support for comments

December 1, 2013 by Mariano Iannuzzi

You can now add and format comments using the Markdown syntax.

Filed Under: Announcements, Wordpress Tagged With: markdown

Corrosion Journal Style Manual

December 1, 2013 by Mariano Iannuzzi

NACE International’s Corrosion Journal: Style Manual.

Filed Under: Miscellaneous, Publication resources Tagged With: NACE, style manual

Maximum allowable service temperatures and the ASTM G48 test

November 29, 2013 by Mariano Iannuzzi

Can we use the ASTM G48 test to establish the maximum allowable temperature of a metal or alloy in an oxidizing environment like seawater?
This post discusses how the ferric chloride electrolyte of the ASTM G48 test compares with other oxidizing environments such as seawater.

Filed Under: ASTM, Fundamentals, Localized corrosion, Nickel Alloys, Stainless steels, Temperature Tagged With: ASTM G48, CPT, CRA, localized corrosion, materials selection, Oil&Gas, seawater

Guide to corrosion resistant nickel alloys

November 27, 2013 by Mariano Iannuzzi

Very interesting article by Haynes Int. on nickel alloys: LINK.

Filed Under: Corrosion Resistant Alloys, Nickel Alloys Tagged With: materials selection, nickel alloys

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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