Effect of purity on the internal morphology of blisters on aluminum surfaces

Horikawa, Keitaro; Ishii, Akio

Results in Materials, 2024, 21, 100522

Number of Access:307（2025-07-01 19:02 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97797

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Title
Effect of purity on the internal morphology of blisters on aluminum surfaces
Creator
NRID
1000050314836 1000050314836
ORCID
0000-0003-4573-9952 0000-0003-4573-9952
researchmap permalink
read0118558 read0118558
Scopus Author ID
7102628912 7102628912
CreatorName
Horikawa, Keitaro
NRID
1000080773340 1000080773340
ORCID
0000-0002-9369-6259 0000-0002-9369-6259
researchmap permalink
a_ishii a_ishii
Scopus Author ID
7201558020 7201558020
CreatorName
Ishii, Akio
Subject
Aluminum
Blistering
Heat treatment
Hydrogen
Purity
Description
Horikawa K., Ishii A.. Effect of purity on the internal morphology of blisters on aluminum surfaces. Results in Materials 21, 100522 (2024); https://doi.org/10.1016/j.rinma.2023.100522.
Abstract
This study investigates the effect of purity of aluminum on the morphology of blisters formed on aluminum plates. To this end, aluminum samples with 99 % and 99.99 % purities are prepared, and blisters are generated on the sample surfaces through atmospheric heat treatment. Subsequently, the morphology of blisters on the surface and within the samples are examined using an ion-milling method and field-emission scanning electron microscopy (FE-SEM) with energy-dispersive X-ray spectroscopy. The FE-SEM images reveal that the shape and number density of the blisters vary with the purity of aluminum. The voids under the blisters are spherical when the purity of aluminum is greater than 99.99 % compared to flatter voids when the purity is 99 %. This morphological change is attributed to the local stress caused by neighboring impurity precipitates, and this is theoretically confirmed through Eshelby's ellipsoidal inclusion analysis.
Publisher
Elsevier B.V.
Source Title
Results in Materials
Volume (Issue)
21
Page
100522
Date of Issued
2024-03-01
Language
English
Handle URL
https://hdl.handle.net/11094/97797
eISSN
2590048X
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.rinma.2023.100522
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article