Fatigue Behavior of Cold-Worked 304 Stainless Steels under In-Situ Irradiation at 300°C
| Autor: | Norikazu Yamamoto, Yoshiharu Murase, Johsei Nagakawa |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
In situ
Materials science Mechanical Engineering Metallurgy Significant difference Fracture mechanics engineering.material Condensed Matter Physics Strain induced martensite Mechanics of Materials Martensite engineering Fracture (geology) General Materials Science Irradiation Austenitic stainless steel |
| Zdroj: | MATERIALS TRANSACTIONS. 49:2243-2246 |
| ISSN: | 1347-5320 1345-9678 |
| Popis: | Stress-controlled fatigue tests were performed for 5% and 15% cold-worked 304 stainless steels under in-situ irradiation with 17 MeV protons at 300°C. Increase of fatigue life with prolonged crack propagation length under in-situ irradiation was detected for 5% cold-worked specimens, whereas no significant difference was observed in fatigue life or crack propagation length between in-situ irradiation and unirradiated conditions for 15% cold-worked specimens. Fractographic analysis of the fatigue fracture surface suggested more significant participation of strain-induced martensite in fatigue behavior for 15% cold-worked specimens. The strain-induced martensite in 15% cold-worked specimens would play an important role in reducing the in-situ irradiation effect on fatigue behavior based on the interaction between radiation-induced defect clusters and moving dislocations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|