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Damping Properties control of the Cu-base high damping alloys and their application to microparts

Research Project

Project/Area Number 15360362
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural/Functional materials
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

KAINUMA Ryosuke  Tohoku University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (20202004)

Co-Investigator(Kenkyū-buntansha) ISHIDA Kiyohito  New Industry Creation Hatchery Center, Professor, 未来科学技術共同研究センター, 教授 (20151368)
OHNUMA Ikuo  Tohoku University, Graduate School of Engineering, Research Associate, 大学院・工学研究科, 助手 (20250714)
WAKITA Masami  Chuo Spring Co.,LDT, Manager, 開発部, マネージャー(研究職)
SUZUKI Hidekazu  Chuo Spring Co.,LDT, Researcher, 開発部, 担当研究員(研究職)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥15,400,000 (Direct Cost: ¥15,400,000)
Fiscal Year 2004: ¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 2003: ¥9,700,000 (Direct Cost: ¥9,700,000)
KeywordsMartensitic transformation / High Ductility / Shape memory alloys / Cu-Mn-Al base alloys / Damping properties / マルテンサイト変態
Research Abstract

Up to now, a lot of damping materials, such as shape memory alloys, magnetic alloys, two-phase alloys and soft alloys, have been developed. The previous alloys, however, are not sufficient for practical applications, because of the low strength and poor dumping properties. Recently, the present research group has developed new Cu-based SM alloys with a high ductility and excellent dumping properties. In the present study, the mechanical and damping properties of these alloys were investigated and a possibility for practical damping materials in some industrial fields, such as microparts in some precision machines etc., was evaluated.
The obtained main results are as follows :
1.The Damping properties of many specimens with different grain size were examined by dynamic mechanical spectrometer (DMS) in the several conditions on strain and frequency in the applied vibration. It can be concluded that the specimens with large grain size show an excellent damping capacity.
2.The damping properties of some specimens with texture were also examined by DMS. It was found that the texture effectively improves the damping capacity.
3.The mechanical properties of these texture alloys were evaluated by cold rolling test. It was confirmed that these alloys have an enough formability which will be needed for the practical application.
4.An inserting sheet to decrease the vibration generated from speakers in audio system was fabricated on trial. The sheet shows excellent damping properties especially in low frequency field of the applied vibration.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (10 results)

All 2005 2004 2003 Other

All Journal Article (9 results) Publications (1 results)

  • [Journal Article] Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys2005

    • Author(s)
      N.Koeda
    • Journal Title

      Master.Trans 46

      Pages: 118-122

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys2005

    • Author(s)
      N.Koeda
    • Journal Title

      Mater.Trans. 46

      Pages: 118-122

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys2005

    • Author(s)
      N.Koeda
    • Journal Title

      Mater.Trans 46・1

      Pages: 118-122

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Characteristics of Cu-Al-Mn-based Shape Memory Alloys and their Applications2004

    • Author(s)
      Y.Sutou
    • Journal Title

      Mater.Sci.Eng.A 378

      Pages: 278-282

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Cu-Al-Mn-Based Shape Memory Alloys and Applications2003

    • Author(s)
      Y.Sutou
    • Journal Title

      Metals Master & Processes 15

      Pages: 131-148

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effect of Microstructure on Two-way Shape Memory Effect in Cu-Al-Mn Alloys2003

    • Author(s)
      T.Omori
    • Journal Title

      J.Phys.IV 112

      Pages: 507-510

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 高延性Cu-Al-Mn基形状記憶合金の制振特性2003

    • Author(s)
      大森俊洋
    • Journal Title

      銅と銅合金 42

      Pages: 198-201

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Cu-Al-Mn-Based Shape Memory Alloys and Their Applications2003

    • Author(s)
      Y.Sutou
    • Journal Title

      Metals Mater.& Processes 15

      Pages: 131-148

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Damping Properties of Ductile Cu-Al-Mn-Based Shape Memory Alloys2003

    • Author(s)
      T.Omori
    • Journal Title

      J.Japan Copper Brass Res.Assoc.(Japanese) 42

      Pages: 198-201

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] 大森俊洋: "高延性Cu-Al-Mn基形状記憶合金の制振特性"銅と銅合金. 42-1. 198-201 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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