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Hydrogen-induced toughness drop in weld coarse-grained heat-affected zones of linepipe steel
- Lee, Jung-A;
- Lee, Dong-Hyun;
- Seok, Moo-Young;
- Baek, Un Bong;
- Lee, Yun-Hee;
- ... Jang, Jae-il;
- 외 1명
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31초록
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.
키워드
Steel; Hydrogen; Toughness; Heat-affected zone; HIGH-STRENGTH STEELS; PIPELINE STEEL; EMBRITTLEMENT; MICROSTRUCTURE; CRACKING
- 제목
- Hydrogen-induced toughness drop in weld coarse-grained heat-affected zones of linepipe steel
- 저자
- Lee, Jung-A; Lee, Dong-Hyun; Seok, Moo-Young; Baek, Un Bong; Lee, Yun-Hee; Nahm, Seung Hoon; Jang, Jae-il
- 발행일
- 2013-08
- 유형
- Article
- 권
- 82
- 페이지
- 17 ~ 22