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Microstructural observation on helium injected and creep ruptured JPCA by N. Yamamoto; H. Shiraishi; H. Kamitsubo; I. Kohno; T. Shikata; A. Hishinuma is a Materials Science article available to read on EtoBox.
What is Microstructural observation on helium injected and creep ruptured JPCA about?
Detailed and quantitative TEM observation was performed on high temperature helium injected and creep ruptured JPCA to seek the prominent TiC distribution developed for suppression of helium embrittlement. Three different preinjection treatments were adopted for changing the TiC distribution. Considerable degradation in creep rupture strength by helium occurred in solution-annealed specimens, although there was much less effect of other treatments which included aging prior to inj~tion. The concentration of helium at grain boundaries and the promotion of precipitation by helium during injection were responsible for the degradation. Therefore, the presence of TiC precipitates before helium introduction will help prevent degradation. On the other hand, the rupture elongation was reduced by helium after all treatments, although helium trapping by TiC precipitates in the matrix was successfully achieved. Consequently, the combined use of several methods may be necessary for further suppression of helium embrittlement.
Who reads Microstructural observation on helium injected and creep ruptured JPCA?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- N. Yamamoto; H. Shiraishi; H. Kamitsubo; I. Kohno; T. Shikata; A. Hishinuma
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-3115)
- Published
- 1986
- Language
- EN
- Field
- Materials Science (Physical Sciences)