Effect of cathodic hydrogen-charging current density on the hydrogen diffusivity in nanostructured bainitic steels

Kazum, Oluwole, and Kannan, M. Bobby (2017) Effect of cathodic hydrogen-charging current density on the hydrogen diffusivity in nanostructured bainitic steels. Materials Science and Technology, 33 (13). pp. 1548-1552.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://doi.org/10.1080/02670836.2017.134...
 
2
1


Abstract

The effect of cathodic hydrogen-charging current on the effective hydrogen diffusivity in nanostructured bainitic steels produced at transformation temperatures 200 degrees C (BS200) and 350 degrees C (BS350) was investigated and compared to that of mild steel. The effective hydrogen diffusivity at 10 mA cm(-2) was the lowest for BS200, followed by BS350 and mild steel, due to the finer microstructure and higher dislocation density in the bainitic ferrite of BS200. Increase in the hydrogen-charging current density, i.e. 20 and 30 mA cm(-2), increased the effective hydrogen diffusivity of mild steel by 37 and 135%, and BS350 by 49 and 150%, respectively. For BS200, the increase was not significant (2%) at 20 mA cm(-2), but increased by 34% at 30 mA cm(-2).

Item ID: 50470
Item Type: Article (Research - C1)
ISSN: 1743-2847
Keywords: Nanostructured bainitic steel, cathodic-charging current, hydrogen permeation, hydrogen diffusivity
Date Deposited: 20 Sep 2017 09:23
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 100%
SEO Codes: 86 MANUFACTURING > 8611 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) > 861103 Basic Iron and Steel Products @ 100%
Downloads: Total: 1
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page