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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Deformation twinning, one of the major deformation modes in a crystalline material, has typically been analyzed using generalized planar fault energy (GPFE) curves. Despite the significance of these curves in understanding the twin nucleation and its effect on the mechanical properties of crystals, their experimental validity is lacking. In this comparative study based on the first-principles calculation, molecular dynamics simulation, and quantitative in-situ tensile testing of Al nanowires inside a transmission electron microscopy system, we present both a theoretical and an experimental approach that enable the measurement of a part of the twin formation energy of the perfect Al crystal. The proposed experimental method is also regarded as an indirect but quantitative means for validating the GPFE theory.
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참고문헌 (39)
참고문헌 신청
P. M. Anderson / 2017 / Theory of dislocations / Cambridge University Press
P. E. Blöchl / 1994 / Projector augmented-wave method / Phys. Rev. B 50:17953~17979
C. Brandl / 2007 / General-stacking-fault energies in highly strained metallic environments: Ab initio calculations / Phys. Rev. B 76:54124~54124
J. W. Christian / 1970 / Dislocations and stacking faults / Rep. Prog. Phys. 33:307~411
G. L. W. Cross / 2006 / healing and shakedown in sharp-asperity nanoindentation / Nat. Mater 5:370~376
P. E. Blöchl / 1994 / Projector augmented-wave method / Phys. Rev. B 50:17953~17979
C. Brandl / 2007 / General-stacking-fault energies in highly strained metallic environments: Ab initio calculations / Phys. Rev. B 76:54124~54124
J. W. Christian / 1970 / Dislocations and stacking faults / Rep. Prog. Phys. 33:307~411
G. L. W. Cross / 2006 / healing and shakedown in sharp-asperity nanoindentation / Nat. Mater 5:370~376
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