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

74 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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10.1016/j.jnucmat.2004.04.069

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title = "Dynamic observation of the collapse process of a stacking fault tetrahedron by moving dislocations",

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.",

author = "Yoshitaka Matsukawa and Zinkle, {Steven J.}",

note = "Funding Information: This research was sponsored by office of Fusion Energy Sciences, US Department of Energy, under contract DE-ACO5-00OR22725 with UT-Battelle, LLC. We are grateful to Kathy Yarborough for specimen preparation, Cecil Carmichael for furnace operation, and Dr Neal Evans for maintenance of TEM. Also, we thank Drs Stas Golubov, Yuri Osetsky, Roger Stoller, Thak Sang Byun, Nao Hashimoto, Joe Horton, and Jim Bentley in ORNL, and Dr Kazuto Arakawa in Shimane University for valuable comments.; Proceedings of the 11th Conference on Fusion Research ; Conference date: 07-12-2003 Through 12-12-2003",

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doi = "10.1016/j.jnucmat.2004.04.069",

language = "English",

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T1 - Dynamic observation of the collapse process of a stacking fault tetrahedron by moving dislocations

AU - Matsukawa, Yoshitaka

AU - Zinkle, Steven J.

N1 - Funding Information: This research was sponsored by office of Fusion Energy Sciences, US Department of Energy, under contract DE-ACO5-00OR22725 with UT-Battelle, LLC. We are grateful to Kathy Yarborough for specimen preparation, Cecil Carmichael for furnace operation, and Dr Neal Evans for maintenance of TEM. Also, we thank Drs Stas Golubov, Yuri Osetsky, Roger Stoller, Thak Sang Byun, Nao Hashimoto, Joe Horton, and Jim Bentley in ORNL, and Dr Kazuto Arakawa in Shimane University for valuable comments.

PY - 2004/8/1

Y1 - 2004/8/1

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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U2 - 10.1016/j.jnucmat.2004.04.069

DO - 10.1016/j.jnucmat.2004.04.069

M3 - Conference article

AN - SCOPUS:3342930524

SN - 0022-3115

VL - 329-333

SP - 919

EP - 923

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 PART B

T2 - Proceedings of the 11th Conference on Fusion Research

Y2 - 7 December 2003 through 12 December 2003

ER -

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

Abstract

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