Dynamic observation of the collapse process of a stacking fault tetrahedron by moving dislocations

Yoshitaka Matsukawa; Steven J. Zinkle

doi:10.1016/j.jnucmat.2004.04.069

Dynamic observation of the collapse process of a stacking fault tetrahedron by moving dislocations

Yoshitaka Matsukawa, Steven J. Zinkle

Materials Design Division

Research output: Contribution to journal › Conference article › peer-review

63 Citations (Scopus)

Abstract

Dynamic observation of the microstructure of quenched gold during deformation in a transmission electron microscope revealed that stacking fault tetrahedra (SFTs) having perfect pyramid structure were collapsed by direct interaction with moving screw dislocations. Although a recent molecular dynamics computer simulation study found that truncation of SFT before interaction with moving dislocations is a necessary condition for the SFT collapse, the present experimental results clearly show that truncation of SFT is not a crucial factor for the collapse mechanism.

Original language	English
Pages (from-to)	919-923
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	329-333
Issue number	1-3 PART B
DOIs	https://doi.org/10.1016/j.jnucmat.2004.04.069
Publication status	Published - 2004 Aug 1
Event	Proceedings of the 11th Conference on Fusion Research - Kyoto, Japan Duration: 2003 Dec 7 → 2003 Dec 12

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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abstract = "Dynamic observation of the microstructure of quenched gold during deformation in a transmission electron microscope revealed that stacking fault tetrahedra (SFTs) having perfect pyramid structure were collapsed by direct interaction with moving screw dislocations. Although a recent molecular dynamics computer simulation study found that truncation of SFT before interaction with moving dislocations is a necessary condition for the SFT collapse, the present experimental results clearly show that truncation of SFT is not a crucial factor for the collapse mechanism.",

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AU - Matsukawa, Yoshitaka

AU - Zinkle, Steven J.

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N2 - Dynamic observation of the microstructure of quenched gold during deformation in a transmission electron microscope revealed that stacking fault tetrahedra (SFTs) having perfect pyramid structure were collapsed by direct interaction with moving screw dislocations. Although a recent molecular dynamics computer simulation study found that truncation of SFT before interaction with moving dislocations is a necessary condition for the SFT collapse, the present experimental results clearly show that truncation of SFT is not a crucial factor for the collapse mechanism.

AB - Dynamic observation of the microstructure of quenched gold during deformation in a transmission electron microscope revealed that stacking fault tetrahedra (SFTs) having perfect pyramid structure were collapsed by direct interaction with moving screw dislocations. Although a recent molecular dynamics computer simulation study found that truncation of SFT before interaction with moving dislocations is a necessary condition for the SFT collapse, the present experimental results clearly show that truncation of SFT is not a crucial factor for the collapse mechanism.

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