Direct evidence of the dynamic growth of nanotwinned copper grain upon electron beam irradiation

Chunwang Zhao; Yizhong Huang; Zhaoshi Dong; Jiajie Shen

doi:10.1021/acs.cgd.0c00651

Direct evidence of the dynamic growth of nanotwinned copper grain upon electron beam irradiation

Chunwang Zhao^*, Yizhong Huang^*, Zhaoshi Dong, Jiajie Shen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Dynamic growth behaviors of nanotwinned Cu (nt-Cu) grain upon electron beam irradiation were investigated by in situ transmission electron microscopy. Direct evidence shows that nt-Cu grain grows in a successive mode of new crystalline lattice lamella shared coherently with the surface of the existing twin but oriented differently from each other. As such, a growth mechanism of epitaxial twinning is proposed. Interestingly, the reorientation of the face-centered cubic structure (FCC), the reversible phase transformation from FCC to hexagonal close-packed (HCP) structure, and FCC → HCP → body-centered tetragonal successive phase transformation were observed directly during the growth process of the nt-Cu grain.

Original language	English
Pages (from-to)	6493-6501
Number of pages	9
Journal	Crystal Growth and Design
Volume	20
Issue number	10
DOIs	https://doi.org/10.1021/acs.cgd.0c00651
Publication status	Published - Oct 7 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 American Chemical Society.

ASJC Scopus Subject Areas

General Chemistry
General Materials Science
Condensed Matter Physics

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title = "Direct evidence of the dynamic growth of nanotwinned copper grain upon electron beam irradiation",

abstract = "Dynamic growth behaviors of nanotwinned Cu (nt-Cu) grain upon electron beam irradiation were investigated by in situ transmission electron microscopy. Direct evidence shows that nt-Cu grain grows in a successive mode of new crystalline lattice lamella shared coherently with the surface of the existing twin but oriented differently from each other. As such, a growth mechanism of epitaxial twinning is proposed. Interestingly, the reorientation of the face-centered cubic structure (FCC), the reversible phase transformation from FCC to hexagonal close-packed (HCP) structure, and FCC → HCP → body-centered tetragonal successive phase transformation were observed directly during the growth process of the nt-Cu grain.",

author = "Chunwang Zhao and Yizhong Huang and Zhaoshi Dong and Jiajie Shen",

note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

year = "2020",

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doi = "10.1021/acs.cgd.0c00651",

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T1 - Direct evidence of the dynamic growth of nanotwinned copper grain upon electron beam irradiation

AU - Zhao, Chunwang

AU - Huang, Yizhong

AU - Dong, Zhaoshi

AU - Shen, Jiajie

PY - 2020/10/7

Y1 - 2020/10/7

N2 - Dynamic growth behaviors of nanotwinned Cu (nt-Cu) grain upon electron beam irradiation were investigated by in situ transmission electron microscopy. Direct evidence shows that nt-Cu grain grows in a successive mode of new crystalline lattice lamella shared coherently with the surface of the existing twin but oriented differently from each other. As such, a growth mechanism of epitaxial twinning is proposed. Interestingly, the reorientation of the face-centered cubic structure (FCC), the reversible phase transformation from FCC to hexagonal close-packed (HCP) structure, and FCC → HCP → body-centered tetragonal successive phase transformation were observed directly during the growth process of the nt-Cu grain.

AB - Dynamic growth behaviors of nanotwinned Cu (nt-Cu) grain upon electron beam irradiation were investigated by in situ transmission electron microscopy. Direct evidence shows that nt-Cu grain grows in a successive mode of new crystalline lattice lamella shared coherently with the surface of the existing twin but oriented differently from each other. As such, a growth mechanism of epitaxial twinning is proposed. Interestingly, the reorientation of the face-centered cubic structure (FCC), the reversible phase transformation from FCC to hexagonal close-packed (HCP) structure, and FCC → HCP → body-centered tetragonal successive phase transformation were observed directly during the growth process of the nt-Cu grain.

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Direct evidence of the dynamic growth of nanotwinned copper grain upon electron beam irradiation

Abstract

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ASJC Scopus Subject Areas

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