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Title: Investigation of high-energy ion-irradiated MA957 using synchrotron radiation under in-situ tension

In this paper, an MA957 oxide dispersion-strengthened (ODS) alloy was irradiated with high-energy ions in the Argonne Tandem Linac Accelerator System. Fe ions at an energy of 84 MeV bombarded MA957 tensile specimens, creating a damage region similar to 7.5 μm in depth; the peak damage (similar to 40 dpa) was estimated to be at similar to 7 μm from the surface. Following the irradiation, in-situ high-energy X-ray diffraction measurements were performed at the Advanced Photon Source in order to study the dynamic deformation behavior of the specimens after ion irradiation damage. In-situ X-ray measurements taken during tensile testing of the ion-irradiated MA957 revealed a difference in loading behavior between the irradiated and un-irradiated regions of the specimen. At equivalent applied stresses, lower lattice strains were found in the radiation-damaged region than those in the un-irradiated region. This might be associated with a higher level of Type II stresses as a result of radiation hardening. The study has demonstrated the feasibility of combining high-energy ion radiation and high-energy synchrotron X-ray diffraction to study materials' radiation damage in a dynamic manner.
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [1] ;  [1] ;  [4] ;  [1] ;  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States); Xi'an Jiaotong Univ., Shaanxi (China)
  3. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  4. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States); Kyushu Univ., Fukuoka (Japan)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; AC-02-06CH11357
Published Article
Journal Name:
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 1996-1944
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; in situ tensile test; oxide dispersion-strengthened (ODS); ion irradiation; synchrotron radiation
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1357253