Evaluation of localized deformaton at low strain levels in austenitic stainless steel irradiated by proton

Takashi Tanno, Akira Hasegawa, Shuto Sasaki, Shuhei Nogami, Manabu Satou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

After neutron irradiation, austenitic stainless steel, which is used for in-core components in nuclear power plants, exhibits localized deformation. This phenomenon is not observed in unirradiated stainless steel. This irradiation-induced localized deformation is one factor that affects irradiation-assisted stress corrosion cracking. This study investigates localized deformation behavior caused by irradiation at low strain levels. Solution-annealed 316L stainless steels were irradiated at 300°C to 0.1-1 dpa by 1 or 2 MeV protons from an accelerator. After irradiation, plastic strains of up to 10% were introduced step by step in vacuum at 300°C. Microstructural observations revealed that elastic strain was induced at the grain boundary by stopping coarse slipping. Electron backscattered diffraction analysis was performed on the specimen surface at each plastic strain level. It revealed a characteristic behavior of the local strain concentration as the plastic strain and the dpa level increased.

Original languageEnglish
Title of host publication14th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
Pages1289-1293
Number of pages5
Volume2
Publication statusPublished - 2009 Dec 1
Event714th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009 - Virginia Beach, VA, United States
Duration: 2009 Aug 232009 Aug 27

Other

Other714th International Conference on Environmental Degradation of Materials in Nuclear Power Systems Water Reactors 2009
CountryUnited States
CityVirginia Beach, VA
Period09/8/2309/8/27

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Environmental Engineering

Fingerprint Dive into the research topics of 'Evaluation of localized deformaton at low strain levels in austenitic stainless steel irradiated by proton'. Together they form a unique fingerprint.

Cite this