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Creation of high-fatigue-resistant thin-film structures by controlling nano-crystalline microstructure and fatigue-life prediction

Research Project

Project/Area Number 24360049
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionMeijo University

Principal Investigator

TANAKA Keisuke  名城大学, 理工学部, 教授 (80026244)

Co-Investigator(Kenkyū-buntansha) KIMACHI Hirohisa  名城大学, 理工学部, 教授 (30324453)
FUJIYAMA Kazunari  名城大学, 理工学部, 教授 (20410772)
FUJII Tomoyuki  静岡大学, 工学(系)研究科, 助教 (30377840)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2012: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Keywords機械材料・材料力学 / 疲労 / 破壊力学 / 薄膜 / ニッケルナノ結晶 / 電着法 / X線プロフィル解析 / ナノ結晶 / 切欠き効果 / 微小構造 / LIGA / き裂進展 / 材料力学 / 疲労損傷機構 / 微視力学
Outline of Final Research Achievements

Multilayer thin films were produced to have a core layer of ultrafine crystals sandwiched by nano-crystalline surface layers, where the surface layers improve the resistance to crack nucleation resistance and the core layer blocks crack propagation. The fatigue strength was improved by nano-crystalline surface layers, unless no inter-layer separation did not take place. Intermediate layers will be required to achieve high resistance against fatigue. Various notched specimens made of nanocrystals were produced by UV-LIGA process. The reduction of fatigue strength due to notches was predicted by the point stress model. Nano-crystallization can improve the fatigue strength of notched samples, while, at the same time, increases the notch sensitivity. Nano-crystalline samples are very much sensitive to micro defects. Bulk samples with millimeter thickness produced by long-period electrodeposition will be useful for further detailed investigations of fatigue mechanisms of nano-crystals.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (10 results)

All 2015 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results)

  • [Journal Article] 電着法により創製したニッケルナノ結晶薄膜の微視構造のX線評価2015

    • Author(s)
      田中啓介,小池祐基,佐野勝基,田中浩人,町屋修太郎,菖蒲敬久,來海博央
    • Journal Title

      材料

      Volume: 64 Pages: 500-508

    • NAID

      130005087884

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] ニッケルナノ結晶粒径分布のX線プロファイル解析と透過電顕による評価2013

    • Author(s)
      佐野勝基、田中浩人、田中啓介、來海博央
    • Journal Title

      第47回X線材料強度に関するシンポジウム講演論文集

      Volume: 47 Pages: 51-56

    • Related Report
      2013 Annual Research Report
  • [Journal Article] ナノ結晶ニッケル電着薄膜の疲労特性に及ぼす膜厚の影響2012

    • Author(s)
      田中啓介
    • Journal Title

      材料

      Volume: 61 Pages: 946-952

    • NAID

      130003326884

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] Fatigue Porperties of Nano-Crystalline Nickel Films made by Electrodeposition2015

    • Author(s)
      K. Tanaka, H. Kimachi
    • Organizer
      International Conference on Advacnced Technology in Experimental Mechanics 2015
    • Place of Presentation
      Loisir Hotel, Toyohashi
    • Year and Date
      2015-10-04 – 2015-10-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] 電着法によるニッケルナノ結晶バルク材の創製と力学特性評価2015

    • Author(s)
      佐野勝基,小林大純,田中啓介,來海博央
    • Organizer
      日本材料学会,東海支部,学術講演会
    • Place of Presentation
      名城大学MSAT 名古屋、
    • Year and Date
      2015-03-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] UV-LIGAプロセスによるナノ結晶薄膜試験片の創製と切欠き疲労強度評価2014

    • Author(s)
      永田寛茂,長谷川弘幸,田中啓介,來海博央
    • Organizer
      日本材料学会,第32回疲労シンポジウム
    • Place of Presentation
      高山市民文化会館、高山、岐阜
    • Year and Date
      2014-11-06 – 2014-11-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] ニッケルナノ結晶構造のX線回折プロファイル解析による評価2014

    • Author(s)
      小池祐基,佐野勝基,藤山一成,町屋修太郎,菖蒲敬久
    • Organizer
      日本材料学会第48回X線材料強度に関するシンポジウム
    • Place of Presentation
      エル・おおさか
    • Year and Date
      2014-07-24 – 2014-07-25
    • Related Report
      2014 Annual Research Report
  • [Presentation] UV-LIGAプロセスによるニッケルナノ結晶薄膜試験片の創製と疲労特性評価2014

    • Author(s)
      長谷川弘幸、田中啓介、、來海博央
    • Organizer
      日本材料学会 東海支部 第8回学術講演会
    • Place of Presentation
      名古屋
    • Related Report
      2013 Annual Research Report
  • [Presentation] 結晶粒制御した多層薄膜の疲労特性2013

    • Author(s)
      長谷川弘幸
    • Organizer
      日本材料学会東海支部 第7回学術講演会
    • Place of Presentation
      名古屋工業大学(名古屋市)
    • Year and Date
      2013-03-04
    • Related Report
      2012 Annual Research Report
  • [Presentation] 電着ニッケル薄膜のX線回折法による粒径と転位密度の測定2012

    • Author(s)
      田中浩人
    • Organizer
      日本材料学会 第46回X線材料強度に関するシンポジウム
    • Place of Presentation
      日本材料学会(京都市)
    • Year and Date
      2012-07-06
    • Related Report
      2012 Annual Research Report

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Published: 2012-04-24   Modified: 2019-07-29  

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