In-situ observation of the migration and growth of helium bubbles in aluminum

Ono, Kotaro; Furuno, S.; Hojou, K.; Kino, Takao; Izui, K.; Takaoka, Osamu; Kubo, Naoki; Mizuno, Kaoru; Ito, Kazuaki

doi:10.1016/0022-3115(92)90678-e

Cited by 27 publications

(10 citation statements)

References 11 publications

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“…Work with in situ ion irradiation of metals in TEM showed a Brownian motion of helium bubbles in the metal [8,9]. But in this case the mechanism of bubble growth and motion is not only a result of the temperature, it is a combination of the irradiation effects and the temperature.…”

Section: Introductionmentioning

confidence: 92%

Helium bubbles formation in aluminum: Bulk diffusion and near-surface diffusion using TEM observations

Glam¹,

Eliezer²,

Moreno³

et al. 2009

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 92%

Helium bubbles formation in aluminum: Bulk diffusion and near-surface diffusion using TEM observations

Glam¹,

Eliezer²,

Moreno³

et al. 2009

Journal of Nuclear Materials

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“…Hetherly et al touched upon loop punching in the context of preferential bubble nucleation at twist grain boundary in Cu and Au 12 . Although investigations on He migration and clustering, and bubble migration and coalescence in FCC metals such as Ni 15 , 16 , Al 13 , and Cu 12 , 14 were conducted, the detailed bubble growth process, especially a fundamental understanding on the punching mechanism is still at lack. Hence, in this work, we aim to elaborate on He bubble growth in Cu–He system using MD simulations, and report a novel atomistic process involving incipient plasticity of punching dissociated prismatic dislocation loop (DPDL) during bubble growth, which then assists microstructure evolution.…”

Section: Introductionmentioning

confidence: 99%

Dissociated prismatic loop punching by bubble growth in FCC metals

Jin

Gao

Zhang

et al. 2021

Sci Rep

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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.

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“…30 In situ TEM He implantation has previously been performed on several pure metals. [31][32][33][34][35][36][37][38][39][40][41] In situ TEM annealing has been employed to determine cavity growth mechanisms in He-implanted metals. 40,[42][43][44] We present new experimental results of in situ TEM He implantation and subsequent in situ TEM annealing in Pd, a face-centered cubic metal.…”

Section: Introductionmentioning

confidence: 99%

“…[31][32][33][34][35][36][37][38][39][40][41] In situ TEM annealing has been employed to determine cavity growth mechanisms in He-implanted metals. 40,[42][43][44] We present new experimental results of in situ TEM He implantation and subsequent in situ TEM annealing in Pd, a face-centered cubic metal. We include a thorough discussion of how in situ ion implantation and in situ annealing data could help improve models of cavity nucleation and growth and help pursue a physics-based mechanistic understanding of noble gas behavior within solids in extreme environments.…”

Section: Introductionmentioning

confidence: 99%

Using In Situ TEM Helium Implantation and Annealing to Study Cavity Nucleation and Growth

Taylor

Sugar

Robinson

et al. 2020

JOM

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Noble gases are generated within solids in nuclear environments and coalesce to form gas stabilized voids or cavities. Ion implantation has become a prevalent technique for probing how gas accumulation affects microstructural and mechanical properties. Transmission electron microscopy (TEM) allows measurement of cavity density, size, and spatial distributions post-implantation. While post-implantation microstructural information is valuable for determining the physical origins of mechanical property degradation in these materials, dynamic microstructural changes can only be determined by in situ experimentation techniques. We present in situ TEM experiments performed on Pd, a model face-centered cubic metal that reveals real-time cavity evolution dynamics. Observations of cavity nucleation and evolution under extreme environments are discussed.

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In-situ observation of the migration and growth of helium bubbles in aluminum

Cited by 27 publications

References 11 publications

Helium bubbles formation in aluminum: Bulk diffusion and near-surface diffusion using TEM observations

Helium bubbles formation in aluminum: Bulk diffusion and near-surface diffusion using TEM observations

Dissociated prismatic loop punching by bubble growth in FCC metals

Using In Situ TEM Helium Implantation and Annealing to Study Cavity Nucleation and Growth

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