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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Anomalous strengthening by supersaturated solid solutions of selectively laser melted Al–Si-based alloys

http://hdl.handle.net/2237/00032650
http://hdl.handle.net/2237/00032650
47adc5eb-86f3-4301-947c-8196f389c5cb
名前 / ファイル ライセンス アクション
ADDMA_2019_1525.pdf ADDMA_2019_1525 (7.5 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-09-18
タイトル
タイトル Anomalous strengthening by supersaturated solid solutions of selectively laser melted Al–Si-based alloys
言語 en
著者 Takata, Naoki

× Takata, Naoki

WEKO 101334

en Takata, Naoki

Search repository
Liu, Mulin

× Liu, Mulin

WEKO 101335

en Liu, Mulin

Search repository
Kodaira, Hirohisa

× Kodaira, Hirohisa

WEKO 101336

en Kodaira, Hirohisa

Search repository
Suzuki, Asuka

× Suzuki, Asuka

WEKO 101337

en Suzuki, Asuka

Search repository
Kobashi, Makoto

× Kobashi, Makoto

WEKO 101338

en Kobashi, Makoto

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Additive manufacturing
キーワード
主題Scheme Other
主題 Aluminum alloy
キーワード
主題Scheme Other
主題 Strain hardening
キーワード
主題Scheme Other
主題 Rapid solidification
キーワード
主題Scheme Other
主題 Transmission electron microscopy
抄録
内容記述 To identify the dominant contributing factor in the anomalously high strength of Al–Si-based alloys fabricated by selective laser melting (SLM), microstructural characteristics of a SLM-built Al–10Si–0.3 Mg alloy (AlSi10Mg) and their changes upon annealing at elevated temperatures were investigated. The as-built AlSi10Mg alloy exhibits a peculiar microstructure comprising of a number of columnar α-Al (fcc) phase with concentrated Si in solution. Numerous nano-sized particles were observed within the α-Al matrix. At elevated temperatures, a number of Si phase (diamond structure) precipitates consumed the solute Si in the columnar α-Al phase, but the microstructure of the α-Al matrix changed slightly. After annealing at elevated temperatures, the tensile strength of the as-built AlSi10Mg alloy substantially decreased accompanied by a reduction in the strain hardening rate. The supersaturated solid solution of the α-Al phase containing numerous nano-sized particles enhanced the strain hardening, resulting in the anomalous strengthening of the SLM-built AlSi10Mg alloy. The microstructural features were formed due to rapid solidification at an extremely high cooling rate in the SLM process, which provides important insights into controlling the strength of Al–Si-based alloys fabricated by SLM.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開日: 2022/05/01
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.addma.2020.101152
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 2214-8604
書誌情報 en : Additive Manufacturing

巻 33, p. 101152, 発行日 2020-05
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