The effect of deformation on the change of hydrogen diffusion in C-Mn-Si-P Trip 800 steel

Hydrogen diffusion characteristics were studied in C - Mn - Si - P TRIP 800 steel. The steel was tested in as-received state and in states after 5 and 10 % tensile deformation. The steel microstructure consisted predominantly of ferrite, bainite and retained austenite. The tensile deformation result...

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Bibliographic Details
Published in:Metalurgija Vol. 55; no. 3; pp. 361 - 364
Main Authors: P. Váňová, J. Sojka, T. Kulová, V. Vodárek, M. Sozańska, B. Chmiela, J. Lelątko
Format: Journal Article
Language:English
Published: Croatian Metallurgical Society 01-01-2016
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Summary:Hydrogen diffusion characteristics were studied in C - Mn - Si - P TRIP 800 steel. The steel was tested in as-received state and in states after 5 and 10 % tensile deformation. The steel microstructure consisted predominantly of ferrite, bainite and retained austenite. The tensile deformation resulted in a decrease of the retained austenite content. Hydrogen diffusion characteristics were studied by means of electrochemical permeation method for two current densities in build-up transients. Hydrogen diffusion coefficients of the studied TRIP steel varied from 1,6・10-7cm2・s-1 for the as-received state to 1,3・10-6 cm2・s-1 for the state after 5 % tensile deformation. The hydrogen diffusion coefficients increased markedly during the second build-up transient reflecting thus the fact that hydrogen trapping was less pronounced.
ISSN:0543-5846
1334-2576