Title of article
Hydrogen-induced toughness drop in weld coarse-grained heat-affected zones of linepipe steel
Author/Authors
Lee، نويسنده , , Jung-A and Lee، نويسنده , , Dong-Hyun and Seok، نويسنده , , Moo-Young and Baek، نويسنده , , Un Bong and Lee، نويسنده , , Yun-Hee and Nahm، نويسنده , , Seung Hoon and Jang، نويسنده , , Jae-il، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
6
From page
17
To page
22
Abstract
In this study, hydrogen effects on the impact toughness of simulated coarse-grained heat-affected zones (CGHAZs) in a linepipe steel were investigated in search of the possible “local brittle zone phenomenon” in hydrogen pipeline welds. After hydrogen charging, the inter-critically reheated and unaltered CGHAZ exhibited very low impact energies as well as occurrence of splitting. This hydrogen-induced toughness drop is discussed in terms of combined effects of brittle microstructures and hydrogen trapping.
Keywords
steel , Hydrogen , Toughness , Heat-affected zone
Journal title
Materials Characterization
Serial Year
2013
Journal title
Materials Characterization
Record number
2268891
Link To Document