Grain refinement and superplasticity of pipes processed by high-pressure sliding
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- Yongpeng Tang
- Department of Materials Science and Engineering, Kyushu University, Fukuoka, Japan
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- Koki Matsuda
- Department of Materials Science and Engineering, Kyushu University, Fukuoka, Japan
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- Yoichi Takizawa
- Technology Department, Nagano Forging Co., Ltd, Nagano, Japan
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- Manabu Yumoto
- Technology Department, Nagano Forging Co., Ltd, Nagano, Japan
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- Yoshiharu Otagiri
- Technology Department, Nagano Forging Co., Ltd, Nagano, Japan
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- Zenji Horita
- Department of Materials Science and Engineering, Kyushu University, Fukuoka, Japan
説明
<jats:p> The high-pressure sliding (HPS) process was applied for grain refinement of a pipe form of an Al-3wt%Mg-0.2wt%Sc alloy by developing two types of straining techniques (called in this study anvil sliding and mandrel sliding). To achieve a homogeneous microstructure throughout the cross-section of the pipe, the sample is rotated around the longitudinal axis every after sliding operation by introducing multi-pass technique, named multi-pass HPS (MP-HPS) as developed earlier for rods. The MP-HPS-processed sample shows ultrafine-grained structures with an average grain size of ∼260 and ∼300 nm after the HPS processing using anvil sliding and mandrel sliding. The samples also exhibit superplasticity with total elongations well more than 400%, respectively. A finite-element method is used to simulate the evolution of strain in the HPS processing and demonstrates that the simulation well represents the experimental results. </jats:p>
収録刊行物
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- Materials Science and Technology
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Materials Science and Technology 36 (7), 877-886, 2020-05
SAGE Publications
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詳細情報 詳細情報について
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- CRID
- 1363107368637421184
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- ISSN
- 17432847
- 02670836
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- データソース種別
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- Crossref
- KAKEN