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Hydrogen Susceptibility of Nanostructured Bainitic Steels


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Authors

Peet, MJ 
Hojo, T 

Abstract

jats:titleAbstract</jats:title> jats:pNanostructured steels with an ultimate tensile strength of 1.6 GPa were produced with austenite content varying from 0 to 35 vol pct. The effect on the mechanical properties was assessed after saturating the steel with hydrogen. Elongation was reduced to 2 to 5 pct and UTS to 65 to 70 pct of prior value. Thermal desorption measurements confirmed the higher solubility of hydrogen in the steel with higher austenite content. The level of hydrogen saturation was found to correlate to the total area of grain boundaries rather than to the volume fraction of retained austenite.</jats:p>

Description

Keywords

TRIP-aided steel, ultra high strength steel, retained austenite, hydrogen, bainite

Journal Title

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

Conference Name

Journal ISSN

1073-5623
1543-1940

Volume Title

47

Publisher

Springer Science and Business Media LLC