Structural relationship among amorphous, quasicrystal, and crystal in metallic glasses

• Project/Area Number: 22760499
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Physical properties of metals
• Research Institution: Tohoku University
• Principal Investigator: HIRATA Akihiko 東北大学, 原子分子材料科学高等研究機構, 助教 (90350488)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 金属ガラス / ナノ構造 / ナノ結晶化 / 透過電子顕微鏡 / 複雑構造 / 透過型電子顕微鏡

Research Abstract

A structural relationship among amorphous, quasicrystal, and crystal in metallic glasses was investigated by means of transmission electron microscopy. Angstrom-beam electron diffraction technique was first developed using a scanning transmission electron microscope to take local structural information from glass states. We examined local atomic structures of a quasicrystal-forming Zr-Pt glass using this technique and then found that the observed icosahedra in the glass state are distorted compared with those in the quasicrystal.

Research Products

• [Journal Article] Structural origins of the excellent glass forming ability of Pd_<40> Ni_<40> P_<20> (2012)
  • Author(s): P. F. Guan, T. Fujita, A. Hirata, Y. H. Liu, M. W. Chen
  • Journal Title: Phys. Rev. Lett. Volume: 108 Pages: 175501-175501
  • Peer Reviewed
• [Journal Article] Deposition of multicomponent metallic glass films by single-target magnetron sputtering (2012)
  • Author(s): Y. H. Liu, T. Fujita, A. Hirata, S. Li, H. W. Liu, W. Zhang, A. Inoue, M. W. Chen
  • Journal Title: Intermetallics Volume: 21 Pages: 105-114
  • Peer Reviewed
• [Journal Article] Experimental Characterization of Nanoscale Mechanical Heterogeneity in a Metallic Glass (2011)
  • Author(s): Y. H. Liu, D. Wang, K. Nakajima, W. Zhang, A. Hirata, T. Nishi, A. Inoue, M. W. Chen
  • Journal Title: Phys. Rev. Lett. Volume: 106 Pages: 125504-125504
  • Peer Reviewed
• [Journal Article] Direct observation of local atomic order in a metallic glass (2011)
  • Author(s): Akihiko Hirata, Pengfei Guan, Takeshi Fujita, Yoshihiko Hirotsu, Akihisa Inoue, Alain Reza Yavari, Toshio Sakurai, Mingwei Chen
  • Journal Title: Nature Materials Volume: 10 Pages: 28-33
  • Peer Reviewed
• [Journal Article] 収差補正STEMを用いたオングストロームビーム電子回折による金属ガラスの局所構造解析 (2011)
  • Author(s): 平田秋彦, 陳明偉
  • Journal Title: 日本結晶学会誌 Volume: 53 Pages: 326-331
  • NAID: 10029829695
  • Peer Reviewed
• [Journal Article] 金属ガラスの電子線局所構造解析 (2011)
  • Author(s): 弘津禎彦, 平田秋彦
  • Journal Title: 顕微鏡 Volume: 45 Pages: 250-256
  • NAID: 10019938510
  • Peer Reviewed
• [Journal Article] Structure Analyses of Fe-based Metallic Glasses by Electron Diffraction (2010)
  • Author(s): Akihiko Hirata, Yoshihiko Hirotsu
  • Journal Title: Materials Volume: 3 Pages: 5263-5273
  • Peer Reviewed
• [Journal Article] Quasicrystal-like structure and its crystalline approximant in an Fe_<48> Cr_<15> Mo_<14> C_<15> B_6Tm_2 bulk metallic glass (2010)
  • Author(s): Akihiko Hirata, Yoshihiko Hirotsu, Kenji Amiya, Akihisa Inoue
  • Journal Title: Journals of alloys and compounds Volume: 504
  • Peer Reviewed
• [Journal Article] Quasicrystal-like structure and its crystalline approximant in an Fe_<48>Cr_<15>Mo_<14>C_<15>B_6Tm_2 bulk metallic glass (2010)
  • Author(s): Akihiko Hirata, Yoshihiko Hirotsu, Kenji Amiya, Akihisa Inoue
  • Journal Title: Journals of alloys and compounds Volume: 504
  • Peer Reviewed
• [Presentation] オングストロームビーム電子回折を用いた金属ガラスの局所構造解析 (2012)
  • Author(s): 平田秋彦
  • Organizer: 日本金属学会2012年春期大会
  • Place of Presentation: 横浜国立大学(横浜)
  • Year and Date: 2012-03-29
• [Presentation] Local structure analysis of metallic glasses using Angstrom-beam electron diffraction (2012)
  • Author(s): Akihiko Hirata
  • Organizer: The 10th Asia-Pacific Microscopy Conference
  • Place of Presentation: Perth Convention and Exhibition Centre(オーストラリアパース)
  • Year and Date: 2012-02-09
• [Presentation] Local structure analysis of metallic glasses using Angstrom-beam electron diffraction (2012)
  • Author(s): 平田秋彦
  • Organizer: The 10th Asia-Pacific Microscopy Conference
  • Place of Presentation: Perth Convention and Exhibition Centre(オーストラリア パース)(招待講演)
  • Year and Date: 2012-02-09
• [Presentation] オングストロームビーム電子回折を用いた金属ガラスの局所構造解析 (2012)
  • Author(s): 平田秋彦
  • Organizer: 大阪大学産業科学ナノテクノロジーセンター「第3回若手セミナー」
  • Place of Presentation: 大阪大学(大阪)
  • Year and Date: 2012-02-03
• [Presentation] オングストロームビーム電子回折を用いた金属ガラスの局所構造解析 (2012)
  • Author(s): 平田秋彦
  • Organizer: 大阪大学産業科学ナノテクノロジーセンター「第3回若手セミナー」
  • Place of Presentation: 大阪大学(大阪)(招待講演)
  • Year and Date: 2012-02-03
• [Presentation] Local structure analysis of metallic glasses using Angstrom-beam electron diffraction (2011)
  • Author(s): Akihiko Hirata
  • Organizer: International workshop of phase-change materials and disordered materials-towards new functional materials
  • Place of Presentation: 大阪科学技術センター(大阪)
  • Year and Date: 2011-11-12
• [Presentation] Local structure analysis of metallic glasses using Angstrom-beam electron diffraction (2011)
  • Author(s): 平田秋彦
  • Organizer: International workshop of phase-change materials and disordered materials-towards new functional materials
  • Place of Presentation: 大阪科学技術センター(大阪)(招待講演)
  • Year and Date: 2011-11-12
• [Remarks]
  • URL: http://www.wpi-aimr.tohoku.ac.jp/chen_labo/html-e/personal-Hirata.htm
• [Remarks]
  • URL: http://www.wpi-aimr.tohoku.ac.jp/chen_labo/html-e/personal-Hirata.htm
• [Remarks]
  • URL: http://www.wpi-aimr.tohoku.ac.jp/chen_labo/html-e/personal-Hirata.htm