Dissociated prismatic loop punching by bubble growth in FCC metals

Abstract Materials performance can be significantly degraded due to bubble generation. In this work, the bubble growth process is elaborated in Cu by atomistic modeling to bridge the gap of experimental observations. Upon continuous He implantation, bubble growth is accommodated first by nucleation...

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Main Authors:	Miaomiao Jin, Yipeng Gao, Yongfeng Zhang, Chao Jiang, Jian Gan
Format:	article
Language:	EN
Published:	Nature Portfolio 2021
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/0f47f72e746f4c558b0d459ee8bfe906
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spelling	oai:doaj.org-article:0f47f72e746f4c558b0d459ee8bfe9062021-12-02T17:40:47ZDissociated prismatic loop punching by bubble growth in FCC metals10.1038/s41598-021-92219-72045-2322https://doaj.org/article/0f47f72e746f4c558b0d459ee8bfe9062021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92219-7https://doaj.org/toc/2045-2322Abstract Materials performance can be significantly degraded due to bubble generation. In this work, the bubble growth process is elaborated in Cu by atomistic modeling to bridge the gap of experimental observations. Upon continuous He implantation, bubble growth is accommodated first by nucleation of dislocation network from bubble surface, then formation of dissociated prismatic dislocation loop (DPDL), and final DPDL emission in $$\langle 110\rangle$$ ⟨ 110 ⟩ directions. As the DPDL is found capable of collecting He atoms, this process is likely to assist the formation of self-organized bubble superlattice, which has been reported from experiments. Moreover, the pressurized bubble in solid state manifests the shape of an imperfect octahedron, built by Cu $$\{111\}$$ { 111 } surfaces, consistent with experiments. These atomistic details integrating experimental work fill the gap of mechanistic understanding of athermal bubble growth in Cu. Importantly, by associating with nanoindentation testings, DPDL punching by bubble growth arguably applies to various FCC (face-centered cubic) metals such as Au, Ag, Ni, and Al.Miaomiao JinYipeng GaoYongfeng ZhangChao JiangJian GanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Miaomiao Jin Yipeng Gao Yongfeng Zhang Chao Jiang Jian Gan Dissociated prismatic loop punching by bubble growth in FCC metals
description	Abstract Materials performance can be significantly degraded due to bubble generation. In this work, the bubble growth process is elaborated in Cu by atomistic modeling to bridge the gap of experimental observations. Upon continuous He implantation, bubble growth is accommodated first by nucleation of dislocation network from bubble surface, then formation of dissociated prismatic dislocation loop (DPDL), and final DPDL emission in $$\langle 110\rangle$$ ⟨ 110 ⟩ directions. As the DPDL is found capable of collecting He atoms, this process is likely to assist the formation of self-organized bubble superlattice, which has been reported from experiments. Moreover, the pressurized bubble in solid state manifests the shape of an imperfect octahedron, built by Cu $$\{111\}$$ { 111 } surfaces, consistent with experiments. These atomistic details integrating experimental work fill the gap of mechanistic understanding of athermal bubble growth in Cu. Importantly, by associating with nanoindentation testings, DPDL punching by bubble growth arguably applies to various FCC (face-centered cubic) metals such as Au, Ag, Ni, and Al.
format	article
author	Miaomiao Jin Yipeng Gao Yongfeng Zhang Chao Jiang Jian Gan
author_facet	Miaomiao Jin Yipeng Gao Yongfeng Zhang Chao Jiang Jian Gan
author_sort	Miaomiao Jin
title	Dissociated prismatic loop punching by bubble growth in FCC metals
title_short	Dissociated prismatic loop punching by bubble growth in FCC metals
title_full	Dissociated prismatic loop punching by bubble growth in FCC metals
title_fullStr	Dissociated prismatic loop punching by bubble growth in FCC metals
title_full_unstemmed	Dissociated prismatic loop punching by bubble growth in FCC metals
title_sort	dissociated prismatic loop punching by bubble growth in fcc metals
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0f47f72e746f4c558b0d459ee8bfe906
work_keys_str_mv	AT miaomiaojin dissociatedprismaticlooppunchingbybubblegrowthinfccmetals AT yipenggao dissociatedprismaticlooppunchingbybubblegrowthinfccmetals AT yongfengzhang dissociatedprismaticlooppunchingbybubblegrowthinfccmetals AT chaojiang dissociatedprismaticlooppunchingbybubblegrowthinfccmetals AT jiangan dissociatedprismaticlooppunchingbybubblegrowthinfccmetals
_version_	1718379747359064064

Dissociated prismatic loop punching by bubble growth in FCC metals

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