Grain refinement and superplasticity induced by hot compression of continuously-casted Mg-9Al-1Zn-1Ca and Mg-9Al-1Zn alloys

• 資料種別: 記事
• タイトル: Grain refinement and superplasticity induced by hot compression of continuously-casted Mg-9Al-1Zn-1Ca and Mg-9Al-1Zn alloys
• 著者・編者: Masataka Hakamada; Akira Watazu; Naobumi Saito 他
• 著者標目: Masataka Hakamada; Akira Watazu; Naobumi Saito
• タイトル（掲載誌）: Materials transactions
• 巻号年月日等（掲載誌）: 50(4) 2009.4
• 掲載巻: 50
• 掲載号: 4
• 掲載ページ: 711～718
• 掲載年月日（W3CDTF）: 2009-04
• ISSN（掲載誌）: 1345-9678
• ISSN-L（掲載誌）: 1345-9678
• 出版事項（掲載誌）: Sendai : The Japan Institute of Metals and Materials ; 2001-
• 出版地（国名コード）: JP
• 本文の言語コード: eng
• 件名標目: noncombustible magnesium alloy; second phase particle; forging; dynamic recrystallization; superplasticity; grain boundary sliding
• NDLC: ZP41
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z53-J286
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 10201284; http://id.ndl.go.jp/bib/10201284
• 整理区分コード: 632

• 要約等: Compression tests were conducted at the temperature of 573 K with the true strain rates of 0.1 s<SUP>−1</SUP> on Mg-9Al-1Zn-1Ca and Mg-9Al-1Zn (in mass%) alloys, and the dynamic recrystallization behaviors were examined. Superplastic deformation of the alloys at 573 K after the hot compression was also investigated. When the homogenized Mg-9Al-1Zn-1Ca alloy specimens were deformed to the true compressive strain of 1.6, a fully recrystallized microstructure with the grain size of approximately 5 μm was obtained. However, unrecrystallized regions were observed locally in the hot-compressed as-cast Mg-9Al-1Zn-1Ca and homogenized Mg-9Al-1Zn alloys, which is induced by initial microstructural heterogeneity. The superplastic deformation at 573 K of hot-compressed Mg-9Al-1Zn-1Ca was negligibly impaired by the second phase particles below the strain rates of 10<SUP>−2</SUP> s<SUP>−1</SUP> because the stress concentration due to the particles can be relaxed by diffusion. Microstructural observations of the hot-compressed Mg-9Al-1Zn alloy deformed to fracture suggested the detrimental effect of the unrecrystallized regions on the superplasticity.
• DOI: 10.2320/matertrans.mbw200819; https://doi.org/10.2320/matertrans.mbw200819
• オンライン閲覧公開範囲: インターネット公開
• 関連情報（URI）: http://id.ndl.go.jp/bib/10201284; https://ndlsearch.ndl.go.jp/books/R000000004-I10201284; https://www.jstage.jst.go.jp/article/matertrans/50/4/50_MBW200819/_pdf
• 参照: Microstructural study of forged magnesium pipes at room temperature; https://cir.nii.ac.jp/crid/1360285711725939712
• 参照: Using grain boundary engineering to evaluate the diffusion characteristics in ultrafine-grained Al–Mg and Al–Zn alloys; https://cir.nii.ac.jp/crid/1360011143649328384; Magnesium; https://cir.nii.ac.jp/crid/1360292620539021568; Exceptional superplasticity in an AZ61 magnesium alloy processed by extrusion and ECAP; https://cir.nii.ac.jp/crid/1361137043602316288; High-strain-rate superplasticity at low temperature in a ZK61 magnesium alloy produced by powder metallurgy; https://cir.nii.ac.jp/crid/1361137044323234816; Dislocation creep behavior in Mg–Al–Zn alloys; https://cir.nii.ac.jp/crid/1361137044700581760; Mechanical properties of Mg–Al–Ca alloy processed by hot extrusion; https://cir.nii.ac.jp/crid/1361418521046607232; Dynamic recrystallisation and the development of microstructure during the high temperature deformation of magnesium; https://cir.nii.ac.jp/crid/1362262946036235648; Creep and microstructure of magnesium-aluminum-calcium based alloys; https://cir.nii.ac.jp/crid/1362544419453036288; Creep resistant Mg-Al-Ca alloys: Computational thermodynamics and experimental investigation; https://cir.nii.ac.jp/crid/1362544420332185088; Mechanical properties at elevated temperature of a hot-deformed Mg–Al–Ca–Mn–Sr alloy; https://cir.nii.ac.jp/crid/1362825894441442944; Effects of Ca and Sr addition on mechanical properties of a cast AZ91 magnesium alloy at room and elevated temperature; https://cir.nii.ac.jp/crid/1362825895045585792; Effect of extrusion on microstructures, and mechanical and creep properties of Mg–Al–Sr and Mg–Al–Sr–Ca alloys; https://cir.nii.ac.jp/crid/1362825896010694912; Grain refinement of AZ31 and ZK60 Mg alloys — towards superplasticity studies; https://cir.nii.ac.jp/crid/1363107369209368704; Improvements in the metallography of as-cast AZ91 alloy; https://cir.nii.ac.jp/crid/1363107369826331136; Grain refinement in AZ91 magnesium alloy during thermomechanical processing; https://cir.nii.ac.jp/crid/1363388843412405248; Intergranular fracture at elevated temperature; https://cir.nii.ac.jp/crid/1363388844535249664; Failure of superplastic alloys; https://cir.nii.ac.jp/crid/1363670320174975744; Improved heat resistance of Mg-Al alloys by the Ca addition; https://cir.nii.ac.jp/crid/1364233268877553792; Size and distribution of particles and voids pre-existing in equal channel angular pressed 5083 Al alloy: their effect on cavitation during low-temperature superplastic deformation; https://cir.nii.ac.jp/crid/1364233269403927552; The thermomechanical processing of AlSiC particulate composites; https://cir.nii.ac.jp/crid/1364233270365979264; 難燃性マグネシウム合金の開発; https://cir.nii.ac.jp/crid/1390001204056121984; Forging Characteristics of AZ31 Mg Alloy; https://cir.nii.ac.jp/crid/1390001204245819648; Superplastic Deformation Behavior in Commercial Magnesium Alloy AZ61; https://cir.nii.ac.jp/crid/1390001204246118400; Tensile Properties from Room Temperature to 673 K of Mg-0.9mass%Ca Alloy Containing Lamella Mg2Ca; https://cir.nii.ac.jp/crid/1390001204248449664; Optimization of Rolling Conditions in Mg&ndash;Al&ndash;Ca Alloy Containing Insoluble Second Phase Particles; https://cir.nii.ac.jp/crid/1390001204249429248; Effects of Homogenization Annealing on Dynamic Recrystallization in Mg-Al-Ca-RE (Rare Earth) Alloy; https://cir.nii.ac.jp/crid/1390001204249723136; Mechanical Properties of Mg&ndash;Al&ndash;Ca Alloy Recycled by Solid&ndash;State Recycling; https://cir.nii.ac.jp/crid/1390001204250209920; Dynamic Recrystallization in Pure Magnesium; https://cir.nii.ac.jp/crid/1390282679222698240; Tensile Properties of Forged Mg-Al-Zn-Ca Alloy; https://cir.nii.ac.jp/crid/1390282679226536832
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• 書誌ID（NDLBibID）: 10201284; http://id.ndl.go.jp/bib/10201284
• NII論文ID: 10024813235