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Materials 2016, 9(1), 15; doi:10.3390/ma9010015

Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension

1
Nuclear Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA
2
Department of Nuclear Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
3
Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
4
Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
5
International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, Fukuoka 819-0395, Japan
6
Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Jie Lian
Received: 31 October 2015 / Revised: 18 December 2015 / Accepted: 24 December 2015 / Published: 2 January 2016
(This article belongs to the Special Issue Nuclear Materials 2015)
View Full-Text   |   Download PDF [2943 KB, uploaded 12 May 2017]   |  

Abstract

In this study, 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 ~7.5 μm in depth; the peak damage (~40 dpa) was estimated to be at ~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. View Full-Text
Keywords: synchrotron radiation; oxide dispersion-strengthened (ODS); ion irradiation; in situ tensile test synchrotron radiation; oxide dispersion-strengthened (ODS); ion irradiation; in situ tensile test
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MDPI and ACS Style

Mo, K.; Yun, D.; Miao, Y.; Liu, X.; Pellin, M.; Almer, J.; Park, J.-S.; Stubbins, J.F.; Zhu, S.; Yacout, A.M. Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension. Materials 2016, 9, 15.

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