ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Mechanical Properties
Effect of Grain Boundary Carbide on Hydrogen Embrittlement in Stable Austenitic Stainless Steels
Kyung-Shik KimJee-Hyun KangSung-Joon Kim
Author information
JOURNALS OPEN ACCESS FULL-TEXT HTML

2019 Volume 59 Issue 6 Pages 1136-1144

Details
Abstract

The effect of grain boundary precipitates on hydrogen embrittlement was investigated with a stable austenitic stainless steel, Fe-20Cr-11Ni-5Mn-2Mo-0.5Si-0.3N-0.1C (wt.%). The steels were aged to form M23C6 along the grain boundaries and electrochemically charged with hydrogen. Based on the fractography and silver decoration results, it was found that hydrogen seemed to be concentrated at M23C6/austenite interfaces, and have promoted crack initiation and propagation. Accordingly, hydrogen-induced ductility loss was intensified in the aged alloys.

Information related to the author
© 2019 by The Iron and Steel Institute of Japan
Previous article Next article
feedback
Top