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Hydrogen Induced Crack and Phase Transformation in Hydrogen Presstutd Tensile Test of 316L Stainless Steel
- Authors
- Baek, Un Bong; Choe, Byung Hak; Shim, Jong Hun; Kim, Young Uk; Kim, Young Suk; Kim, Sung Soo; Nam, Sung Hoon; Hong, Keyyong
- Issue Date
- 2월-2015
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- hydrogen induced crack; stainless steel; deformed twin; planar slip; forbidden diffraction; phase transformation
- Citation
- KOREAN JOURNAL OF METALS AND MATERIALS, v.53, no.2, pp 82 - 89
- Pages
- 8
- Journal Title
- KOREAN JOURNAL OF METALS AND MATERIALS
- Volume
- 53
- Number
- 2
- Start Page
- 82
- End Page
- 89
- ISSN
- 1738-8228
2288-8241
- Abstract
- The aim of this investigation is to prove the mechanism of hydrogen induced crack (HIC) of 316L stainless steels in hydrogen pressured tensile test. Microstructures like twin, planar slip, and abnormal phase transformation around the HIC were analyzed by transmission electron microscopy. Deformation twin accompanied by planar slip could be related to the main cause of HIC in the hydrogen pressured tensile condition, because intragranular HICs were mainly observed along the boundaries of twins and planar slip lines. An abnormal forbidden diffraction was also accompanied by HIC in the hydrogen attacked area. Examination of the HIC mechanism in austenitic stainless steel can be applied to the fitness of use for alloys with the possibility of various susceptible cracks in a hydrogen and stress atmosphere.
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