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Detwinning through migration of twin boundaries in nanotwinned Cu films under in situ ion irradiation.
Du, Jinlong; Wu, Zaoming; Fu, Engang; Liang, Yanxiang; Wang, Xingjun; Wang, Peipei; Yu, Kaiyuan; Ding, Xiangdong; Li, Meimei; Kirk, Marquis.
  • Du J; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, P.R. China.
  • Wu Z; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, P.R. China.
  • Fu E; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, P.R. China.
  • Liang Y; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, P.R. China.
  • Wang X; State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing, P.R. China.
  • Wang P; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, P.R. China.
  • Yu K; Department of Materials Science and Engineering, China University of Petroleum, Beijing, P.R. China.
  • Ding X; State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, P.R. China.
  • Li M; Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL, USA.
  • Kirk M; Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL, USA.
Sci Technol Adv Mater ; 19(1): 212-220, 2018.
Article en En | MEDLINE | ID: mdl-29535796
The mechanism of radiation-induced detwinning is different from that of deformation detwinning as the former is dominated by supersaturated radiation-induced defects while the latter is usually triggered by global stress. In situ Kr ion irradiation was performed to study the detwinning mechanism of nanotwinned Cu films with various twin thicknesses. Two types of incoherent twin boundaries (ITBs), so-called fixed ITBs and free ITBs, are characterized based on their structural features, and the difference in their migration behavior is investigated. It is observed that detwinning during radiation is attributed to the frequent migration of free ITBs, while the migration of fixed ITBs is absent. Statistics shows that the migration distance of free ITBs is thickness and dose dependent. Potential migration mechanisms are discussed.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2018 Tipo del documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2018 Tipo del documento: Article