An Investigation of Hydrogen Environment Effect on the Strain Aging of Low Carbon Steel through Vickers Hardness Test

Volume 41, Issue 1 (January 2013)

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ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 11 December 2012
Page Count: 7

An Investigation of Hydrogen Environment Effect on the Strain Aging of Low-Carbon Steel through Vickers Hardness Test

Lee, Dongsun
Dept. of Mechanical Engineering Science, Graduate School of Engineering, Kyushu Univ., Nishi-ku, Fukuoka

Yamamoto, Aki-nori
Dept. of Mechanical Engineering Science, Graduate School of Engineering, Kyushu Univ., Nishi-ku, Fukuoka

Oda, Yasuji
Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu Univ., Nishi-ku, Fukuoka
The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka

Noguchi, Hiroshi
Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu Univ., Nishi-ku, Fukuoka
The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka

(Received 9 May 2011; accepted 31 July 2012)

Abstract

In recent years, increasing attention has been paid to the effect of a hydrogen environment on the fatigue limit of hydrogen-power systems and infrastructure. In carbon steel, strain aging is one of the important factors influencing non-propagating crack behavior, which is related to the fatigue limit. In the present study, to investigate the effects of hydrogen on the strain aging of low-carbon steel (0.13 % carbon steel), Vickers hardness tests were carried out on the carbon steel. A couple of 0.13 % carbon steel specimens with a large-scale plastic zone were aging heat-treated; one was a hydrogen-charged specimen, whereas the other was an uncharged specimen. The Vickers hardness of the hydrogen-charged specimen was found to be lower than that of the uncharged specimen. This observation implies that hydrogen inhibits strain-aging hardening of low-carbon steel. The observation also suggests that hydrogen could affect the non-propagating crack behavior through the inhibition of strain aging.

Keywords:
strain aging, hydrogen embrittlement, Vickers hardness

Paper ID: JTE20120190
DOI: 10.1520/JTE20120190
ASTM International is a member of CrossRef.

Author Title An Investigation of Hydrogen Environment Effect on the Strain Aging of Low-Carbon Steel through Vickers Hardness Test Symposium , 0000-00-00 Committee E04

		SEDL / Journals / Journal of Testing and Evaluation (JTE) / Citation Page Volume 41, Issue 1 (January 2013) Click here to download this paper now for $25 PDF (1.8M) View License Agreement ISSN: 1945-7553 CODEN: JTEVAB Published Online: 11 December 2012 Page Count: 7 An Investigation of Hydrogen Environment Effect on the Strain Aging of Low-Carbon Steel through Vickers Hardness Test Lee, Dongsun Dept. of Mechanical Engineering Science, Graduate School of Engineering, Kyushu Univ., Nishi-ku, Fukuoka Yamamoto, Aki-nori Dept. of Mechanical Engineering Science, Graduate School of Engineering, Kyushu Univ., Nishi-ku, Fukuoka Oda, Yasuji Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu Univ., Nishi-ku, Fukuoka The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka Noguchi, Hiroshi Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu Univ., Nishi-ku, Fukuoka The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka (Received 9 May 2011; accepted 31 July 2012) Abstract In recent years, increasing attention has been paid to the effect of a hydrogen environment on the fatigue limit of hydrogen-power systems and infrastructure. In carbon steel, strain aging is one of the important factors influencing non-propagating crack behavior, which is related to the fatigue limit. In the present study, to investigate the effects of hydrogen on the strain aging of low-carbon steel (0.13 % carbon steel), Vickers hardness tests were carried out on the carbon steel. A couple of 0.13 % carbon steel specimens with a large-scale plastic zone were aging heat-treated; one was a hydrogen-charged specimen, whereas the other was an uncharged specimen. The Vickers hardness of the hydrogen-charged specimen was found to be lower than that of the uncharged specimen. This observation implies that hydrogen inhibits strain-aging hardening of low-carbon steel. The observation also suggests that hydrogen could affect the non-propagating crack behavior through the inhibition of strain aging. Keywords: strain aging, hydrogen embrittlement, Vickers hardness Paper ID: JTE20120190 DOI: 10.1520/JTE20120190 ASTM International is a member of CrossRef. Author Title An Investigation of Hydrogen Environment Effect on the Strain Aging of Low-Carbon Steel through Vickers Hardness Test Symposium , 0000-00-00 Committee E04