時間分解X線トモグラフィを用いたTiB<sub>2</sub>添加により等軸晶化したAl-Cu合金の凝固過程の定量解析
書誌事項
- タイトル別名
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- Quantitative analysis of solidification of equiaxed grains in Al-Cu alloy refined by inoculant TiB<sub>2</sub> particles with using time-resolved X-ray tomography
- 時間分解X線トモグラフィを用いたTiB₂添加により等軸晶化したAl-Cu合金の凝固過程の定量解析
- ジカン ブンカイ Xセン トモグラフィ オ モチイタ TiB ₂ テンカ ニ ヨリ トウ ジクショウカ シタ Al-Cu ゴウキン ノ ギョウコ カテイ ノ テイリョウ カイセキ
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<p>Time-resolved X-ray tomography was performed to observe three-dimensional equiaxed-grain structure in Al-15mass%Cu alloy refined by inoculant TiB2 particles. The time resolution of as short as 0.5 s was achieved by using a pink X-ray beam at a beamline BL28B2 of SPring-8. A filtering method using a phase field model was used for improving quality of reconstructed images, and consequently motion of equiaxed grains were observed in-situ. The time and spatial resolutions allowed to analyze the three-dimensional microstructural evolution. Nucleation events of α-Al preferably occurred in the melt of the bottom part, where the temperature was lower. The dendritic grains were formed during floating after the nucleation because of the buoyancy force. The floating equiaxed grains were stacked due to the floating, and the solid fraction of the stacked regions ranged from 0.11 to 0.19. The observations suggested that the coherency point of dendritic grains was less than 0.2. The observations also showed the grain motion influenced the formation of equiaxed grain structure.</p>
収録刊行物
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- 軽金属
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軽金属 70 (8), 339-346, 2020-08-15
一般社団法人 軽金属学会
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詳細情報 詳細情報について
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- CRID
- 1390004222619591936
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- NII論文ID
- 130007904614
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- NII書誌ID
- AN00069773
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- ISSN
- 18808018
- 04515994
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- NDL書誌ID
- 030570777
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
