Understanding of macrosegregation mechanism through in situ observation of deformation in semi-solid alloys

• Project/Area Number: 24560910
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Metal making engineering
• Research Institution: Osaka University
• Principal Investigator: NAGIRA Tomoya 大阪大学, 工学(系)研究科(研究院), 助教 (00379124)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 固液共存体 / その場観察 / せん断変形 / 偏析 / 凝固割れ / マクロ偏析 / 鋳造割れ / 固液共存 / 割れ / バンド偏析

Outline of Final Research Achievements

Deformation of semi-solid alloys causes casting defects including macrosegregation and cracking. In this study, in situ observation of semi-solid deformation in Al-Cu and Fe-C alloys was carried out using time-resolved X-ray imaging in order to elucidate the semi-solid deformation mechanisms. It was found that the shear strain rate was localized and the solid fraction decreased at the shear domain. The impact of solid morphology on shear band was examined by comparing with in situ observation of deformation in water-particle mixtures. The Impacts of the solid fraction and the shear strain rate on the deformed microstructure and the shear band in the metallic alloys were also examined.

Research Products

• [Journal Article] Impact of melt convection induced by ultrasonic wave on dendrite growth in Sn-Bi alloys (2015)
  • Author(s): Tomoya Nagira, Noriaki Nakatsuka, Hideyuki Yasuda, Kentaro Uesugi, Akihisa Takeuchi and Yoshio Suzuki
  • Journal Title: Materials Letters Volume: 150 Pages: 135-138
  • DOI: 10.1016/j.matlet.2015.02.069
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] In-situ observation of deformation in semi-solid Fe-C alloys at high shear rate (2014)
  • Author(s): T. Nagira, S. Morita, H. Yokota, H. Yasuda, C. M. Gourlay, M. Yoshiya,, A. Sugiyama, K, Uesugi, Y. Takeuchi, Y. Suzuki
  • Journal Title: Metallurgical and Materials Transactions A Volume: 45A Issue: 12 Pages: 1415-1424
  • DOI: 10.1007/s11661-014-2489-5
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Time-resolved X-ray imaging of deformation in semi-solid alloys at high solid fraction (2014)
  • Author(s): Tomoya NAGIRA, Shugo MORITA, Shingo YANAI, Hideyuki YASUDA, Christopher M. GOURLAY, Masato YOSHIYA, Akira SUGIYAMA, Kentaro UESUGI
  • Journal Title: roceedings of Modeling of Casting and Solidification Processes(MCSP2014) Volume: なし Pages: 261-264
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] <i>In Situ</i> Observation of Solidification Behaviors in Carbon Steels Using Synchrotron X-ray Imaging (2014)
  • Author(s): 柳楽知也、安田秀幸、吉矢真人
  • Journal Title: Materia Japan Volume: 53 Issue: 10 Pages: 467-470
  • DOI: 10.2320/materia.53.467
  • NAID: 130004698792
  • ISSN: 1340-2625, 1884-5843
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synchrotron radiography studies of shear-induced dilation in semi-solid Al alloys and steels (2014)
  • Author(s): C.M. Gourlay, C. O’Sullivan, J. Fonseca, L. Yuan, K.M. Kareh, T. Nagira, and H. Yasuda
  • Journal Title: Recent Experimental and Numerical Developments in Semisolid Deformation Volume: 66 Issue: 8 Pages: 1415-1524
  • DOI: 10.1007/s11837-014-1034-8
  • Peer Reviewed
• [Journal Article] Flowering of Continuous Casting Process for Steel in Japan and New Fundamental Seeds to the Future (2014)
  • Author(s): 川本正幸、柳楽知也
  • Journal Title: Tetsu-to-Hagane Volume: 100 Issue: 4 Pages: 472-484
  • DOI: 10.2355/tetsutohagane.100.472
  • NAID: 130003395148
  • ISSN: 0021-1575, 1883-2954
  • Peer Reviewed
• [Journal Article] Image-based Analysis of semisolid deformation for Al-In and Fe-C alloys (2014)
  • Author(s): Shingo Yanai, Shugo Morita, Tokuji Ito, Kohei Morishita, Tomoya Nagira, Hideyuki Yasuda
  • Journal Title: Proceedings of Modeling of Casting and Solidification Processes(MCSP2014) Volume: なし Pages: 265-268
  • Peer Reviewed
• [Journal Article] A Macroscopic Model of Semisolid Deformation including Rearrangement of Solid Grains (2014)
  • Author(s): S. Morita, T. Ito, T. Uchida, T. Nagira, K. Morishita, H. Yasuda, C. M. Gourlay, M. Yoshiya
  • Journal Title: Proceedings of Modeling of Casting and Solidification Processes(MCSP2014) Volume: なし Pages: 269-272
  • Peer Reviewed
• [Journal Article] 凝固現象のその場観察技術とその応用 (2014)
  • Author(s): 安田秀幸、柳樂知也、吉矢真人、杉山明、中塚憲章、森田周吾
  • Journal Title: ふぇらむ Volume: 19 Pages: 121-125
• [Journal Article] Characterization of Shear Deformation Based on In-situ Observation of Deformation in Semi-solid Al–Cu Alloys and Water-particle Mixture (2013)
  • Author(s): T. Nagira, H. Yokota, S. Morita, H. Yasuda, M. Yoshiya, C.M. Gourlay, A. Sugiyama, K. Uesugi, K. Umetani
  • Journal Title: ISIJ International Volume: 53 Issue: 7 Pages: 1195-1201
  • DOI: 10.2355/isijinternational.53.1195
  • NAID: 130003366205
  • ISSN: 0915-1559, 1347-5460
  • Peer Reviewed
• [Journal Article] In situ study of granular micromechanics in semi-solid carbon steels (2013)
  • Author(s): J. Fonseca, C. O'Sullivan, T. Nagira, H. Yasuda, C.M. Gourlay
  • Journal Title: Acta Materialia Volume: 61 Issue: 11 Pages: 4169-4179
  • DOI: 10.1016/j.actamat.2013.03.043
  • Peer Reviewed
• [Journal Article] Al-Cu合金の固液共存体のせん断ひずみの局在化とせん断帯形成 (2013)
  • Author(s): 柳楽知也、安田秀幸、森田周吾、横田大和、吉矢真人、C.M.Gourlay、杉山明、上杉健太朗
  • Journal Title: まてりあ Volume: 52 Pages: 207-207
• [Journal Article] Characterization of Shear Deformation Based on In-situ Observation of Deformation in Semi-Solid Al-Cu Alloys and Water-Particle Mixture (2013)
  • Author(s): 柳楽知也、横田大和、森田周吾、安田秀幸、吉矢真人、C.M. Gourlay、杉山明、上杉健太朗、梅谷啓二
  • Journal Title: Tetsu-to-Hagane Volume: 99 Issue: 2 Pages: 141-148
  • DOI: 10.2355/tetsutohagane.99.141
  • NAID: 130003372503
  • ISSN: 0021-1575, 1883-2954
  • Peer Reviewed
• [Journal Article] 放射光を利用した金属合金における固液共存体のせん断変形のその場観察 (2012)
  • Author(s): 柳楽知也、安田秀幸、C.M. Gourlay、杉山明、吉矢真人、上杉健太朗、梅谷啓二
  • Journal Title: まてりあ Volume: 51 Pages: 561-568
  • NAID: 10031127733
  • Peer Reviewed
• [Journal Article] 金属の固液共存状態におけるせん断変形による偏析形成のその場観察 (2012)
  • Author(s): 柳楽知也、安田秀幸、C.M. Gourlay、杉山明、吉矢真人、上杉健太朗、梅谷啓二
  • Journal Title: 放射光 Volume: 25 Pages: 275-284
  • NAID: 10030877105
  • Peer Reviewed
• [Journal Article] In-situ observation of shear deformation in semi-solid Al-Cu alloys (2012)
  • Author(s): T. Nagira, S. Morita, H. Yasuda, C.M. Gourlay, A. Sugiyama, M. Yoshiya, K. Uesugi, K. Umetani
  • Journal Title: Proc. Visual-JW2012 Volume: なし Pages: 215-216
  • Peer Reviewed
• [Presentation] 鉄鋼材料の固液共存体における変形挙動のその場観察および力学挙動の評価 (2015)
  • Author(s): 柳楽知也、柳井森吾、伊藤徳地、安田秀幸、森下浩平、吉矢真人
  • Organizer: 日本鉄鋼協会第169回春季講演大会
  • Place of Presentation: 東京大学駒場Ⅰキャンパス、東京都
  • Year and Date: 2015-03-18 – 2015-03-20
• [Presentation] 放射光を利用した鉄鋼材料の固液共存体の変形及び力学挙動の解明 (2015)
  • Author(s): 柳楽知也
  • Organizer: 第152回製鋼部会
  • Place of Presentation: 愛知製鋼企業年金基金体育館多目的ホール、愛知県
  • Year and Date: 2015-03-12 – 2015-03-13
  • Invited
• [Presentation] Image-based Analysis of semisolid deformation for Al-In and Fe-C alloys (2014)
  • Author(s): Shingo Yanai, Shugo Morita, Tokuji Ito, Kohei Morishita, Tomoya Nagira, Hideyuki Yasuda
  • Organizer: Proceedings of Modeling of Casting and Solidification Processes(MCSP2014)
  • Place of Presentation: Senri Life Science Center, Osaka
  • Year and Date: 2014-11-24 – 2014-11-26
• [Presentation] A Macroscopic Model of Semisolid Deformation including Rearrangement of Solid Grains (2014)
  • Author(s): S. Morita, T. Ito, T. Uchida, T. Nagira, K. Morishita, H. Yasuda, C. M. Gourlay, M. Yoshiya
  • Organizer: Proceedings of Modeling of Casting and Solidification Processes(MCSP2014)
  • Place of Presentation: Senri Life Science Center, Osaka
  • Year and Date: 2014-11-24 – 2014-11-26
• [Presentation] Time-resolved X-ray imaging of deformation in semi-solid alloys at high solid fraction (2014)
  • Author(s): Tomoya NAGIRA, Shugo MORITA, Shingo YANAI, Hideyuki YASUDA, Christopher M. GOURLAY, Masato YOSHIYA, Akira SUGIYAMA, Kentaro UESUGI
  • Organizer: 9th Pacific Rim International Conference on Modeling of Casting and Solidification Processes (MCSP2014)
  • Place of Presentation: Senri Life Science Center, Osaka
  • Year and Date: 2014-11-24 – 2014-11-26
  • Invited
• [Presentation] 二流体モデルを用いたマクロモデルにおいて固相粒子の衝突・再配列がせん断帯に形成するマクロ偏析に与える影響 (2014)
  • Author(s): 森田周吾、内田辰徳、伊藤徳地、安田秀幸、森下浩平、柳楽知也、吉矢真人
  • Organizer: 日本金属学会2014年秋季講演大会
  • Place of Presentation: 名古屋大学、名古屋
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] 高固相率の固液共存体における固相粒子の再配列・変形におよぼす合金系の影響 (2014)
  • Author(s): 柳井森吾、森田周吾、伊藤徳地、安田秀幸、柳楽知也
  • Organizer: 日本金属学会2014年秋季講演大会
  • Place of Presentation: 名古屋大学、名古屋
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] 固液共存体の変形過程における粒子スケー ルでの組織観察とせん断応力の評価 (2014)
  • Author(s): 柳楽知也、森田周吾、柳井森吾、伊藤徳地、安田秀幸、吉矢真人、杉山明、C.M. Gourlay、上杉健太朗
  • Organizer: 日本金属学会2014年秋季講演大会
  • Place of Presentation: 名古屋大学、名古屋
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] 高固相率の固液共存体の変形マクロモデルにおける固相粒間の相互作用の検討 (2014)
  • Author(s): 森田周吾、伊藤徳地、安田秀幸、森下浩平、柳楽知也、吉矢真人
  • Organizer: 日本鉄鋼協会第168回秋季講演大会
  • Place of Presentation: 名古屋大学、名古屋
  • Year and Date: 2014-09-24 – 2014-09-26
• [Presentation] Direct Observation of High-solid Fraction Deformation in Carbon Steel (2014)
  • Author(s): T. Nagira, S. Morita, H. Yokota, H. Yasuda, C.M. Gourlay, M. Yoshiya, A. Sugiyama and K. Uesugi
  • Organizer: 4th International Conference on Advances in Solidification Processes
  • Place of Presentation: Old Windsor, U.K
  • Year and Date: 2014-07-08 – 2014-07-11
• [Presentation] 高固相率での固液共存体の変形挙動のその場観察とモデル実験による力学特性の評価 (2014)
  • Author(s): 柳楽知也、横田大和、森田周吾、吉矢真人、安田秀幸
  • Organizer: 日本学術振興会 製鋼19委員会 凝固プロセス研究会第64回会議
  • Place of Presentation: 大阪大学、大阪
  • Year and Date: 2014-05-21
• [Presentation] モデル実験における固液共存体のせん断変形時に生じる力学挙動の固相率依存性 (2014)
  • Author(s): 柳楽知也、横田大和、金本拓、安田秀幸、森田周吾、吉矢真人、Christopher Gourlay
  • Organizer: 日本金属学会2014年春期講演大会
  • Place of Presentation: 東京工業大学、東京
• [Presentation] 凝固末期の固液共存体のせん断変形による組織変化のその場観察 (2013)
  • Author(s): 柳楽知也、森田周吾、横田大和、安田秀幸、杉山明、吉矢真人、Christopher Gourlay、上杉健太朗
  • Organizer: 日本鉄鋼協会第166回秋季講演大会
  • Place of Presentation: 金沢大学、石川
• [Presentation] 「X線イメージングを利用した高固相率の固液共存所体におけるせん断変形のその場観察 (2013)
  • Author(s): 柳楽知也、横田大和、森田周吾、安田秀幸、柳井森吾、吉矢真人、杉山明、Christopher Gourlay、上杉健太朗
  • Organizer: 日本金属学会2013年秋季大会
  • Place of Presentation: 金沢大学、石川
• [Presentation] In-situ Observation of Shear Deformation in Semi-solid Carbon Steel (2013)
  • Author(s): T. Nagira, S. Morita, H. Yokota, H. Yasuda, C. Gourlay, M. Yoshiya, A. Sugiyama, K. Uesugi, K. Umetani
  • Organizer: The 8th Pacific Rim Internationla Congress on Advanced Materials and Processing (PRICM-8)
  • Place of Presentation: Hawaii, USA
• [Presentation] A Macroscopic Model for the Band Segregation Induced by Shear Deformation (2013)
  • Author(s): S. Morita, T. Nagira, H. Yokota, H. Yasuda, C. Gourlay, M. Yoshiya
  • Organizer: The 8th Pacific Rim Internationla Congress on Advanced Materials and Processing (PRICM-8)
  • Place of Presentation: Hawaii, USA
• [Presentation] 鉄鋼材料の固液共存体のおけるせん断変形のその場観察とせん断変形組織の特徴 (2013)
  • Author(s): 柳楽知也、横田大和、森田周吾、安田秀幸、杉山明、C.M. Gourlay、吉矢真人、上杉健太朗
  • Organizer: 日本金属学会2013年春季大会
  • Place of Presentation: 東京理科大学、東京
• [Presentation] In-situ observation of shear deformation in semi-solid Al-Cu alloys (2012)
  • Author(s): T. Nagira, S. Morita, H. Yasuda, C.M. Gourlay, A. Sugiyama, M. Yoshiya, K. Uesugi, K. Umetani,
  • Organizer: ,2nd International workshop "In-situ Studies with Photons, Neutrons and Electrons Scattering
  • Place of Presentation: Hotel Hankyu Expo Park, Osaka
• [Presentation] 固液共存状態においてせん断速度がせん断変形組織に与える影響 (2012)
  • Author(s): 柳楽知也、森田周吾、横田大和、安田秀幸、杉山明、C.M. Gourlay、吉矢真人、上杉健太朗
  • Organizer: 日本鋳造工学会第161回全国講演大会
  • Place of Presentation: 岩手県民情報交流センター、盛岡
• [Presentation] 「水―ポリスチレン粒子混合体を用いた固液共存状態でのせん断変形の評価 (2012)
  • Author(s): 横田大和、柳楽知也、安田秀幸、森田周吾、吉矢真人、杉山明、C.M.Gourlay、上杉健太朗
  • Organizer: 日本金属学会2012年秋期講演大会
  • Place of Presentation: 愛媛大学、松山
• [Presentation] 鉄鋼材料の固液共存状態におけるせん断速度が変形挙動に与える影響 (2012)
  • Author(s): 柳楽知也、森田周吾、横田大和、安田秀幸、杉山明、C.M. Gourlay、吉矢真人、上杉健太朗
  • Organizer: 日本鉄鋼協会第164回秋季講演大会
  • Place of Presentation: 愛媛大学、松山
• [Presentation] Al-Cu合金の固液共存状態のせん断変形のその場観察と定量評価 (2012)
  • Author(s): 柳楽知也、森田周吾、横田大和、安田秀幸、吉矢真人、杉山明、C.M. Gourlay、上杉健太朗
  • Organizer: 日本金属学会2012年秋期講演大会
  • Place of Presentation: 愛媛大学、松山
• [Presentation] その場観察を利用した固液共存体のせん断変形に及ぼす固相率の影響
  • Author(s): 柳楽知也、横田大和、森田周吾、吉矢真人、安田秀幸、Christopher Gourlay、杉山明、上杉健太朗
  • Organizer: 日本鋳造工学会関西支部 秋季講演大会
  • Place of Presentation: 関西大学、大阪
• [Presentation] 放射光イメージングの鉄鋼材料の凝固、固液共存状態の変形への応用
  • Author(s): 柳楽知也
  • Organizer: H24年度第１回高温物性値フォーラム研究会
  • Place of Presentation: SPring-8放射光普及棟中講堂、兵庫
• [Book] Development in in-situ observation of deformation in semi-solid alloys using X-ray imaging (2014)
  • Author(s): Tomoya Nagira, Hideyuki Yasuda
  • Total Pages: 259
  • Publisher: Springer Publishing