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Degradation Analysis of Engineering Materials in Air Using White Light and Precise Optical Filter

Research Project

Project/Area Number 17K18817
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Mechanics of materials, Production engineering, Design engineering, and related fields
Research InstitutionTohoku University

Principal Investigator

MIURA HIDEO  東北大学, 工学研究科, 教授 (90361112)

Research Collaborator Suzuki Ken  東北大学, 大学院工学研究科, 准教授
Murakoshi Takuya  東北大学, 大学院工学研究科, 大学院学生
Shinozaki Taichi  東北大学, 大学院工学研究科, 大学院学生
Sakamoto Hayato  東北大学, 大学院工学研究科, 大学院学生
Suzuki Wataru  東北大学, 大学院工学研究科, 大学院学生
Sawase Akari  東北大学, 工学部, 学生
Kasama Shin  東北大学, 工学部, 学生
Cheng Lei  北京科学技術大学
Cai Qingwu  北京科学技術大学, 教授
Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords機械材料・材料力学 / 解析・評価 / 構造・機能材料 / 非破壊検査
Outline of Final Research Achievements

The strength of heat-resistant alloys at elevated temperatures was found to decrease drastically due to the disappearance of the initially formed strengthening texture, which was caused by the stress-induced acceleration of atomic diffusion of component elements of the alloys. It is very important, therefore, to clarify the degradation mechanism quantitatively and to develop the effective method for monitoring the micro texture change. Thus, a novel observation method of the micro texture change was developed by applying the wavelength dependence of the optical reflectance of each element. For example, the reflectance of nickel starts to decrease drastically when the wavelength of the irradiated laser is shorter than 450 nm. By scanning a laser beams with different wavelength on the surface of the alloys, it is possible to detect the change of the local composition of the alloys qualitatively.

Academic Significance and Societal Importance of the Research Achievements

従来の構造材料の劣化損傷評価では電子顕微鏡の利用は不可欠であり,大気中で観察することは不可能である.本開発手法は,高輝度白色光を光源とし,構造材料表面に照射して特定の波長帯域の反射光の強度分布のみを選択的に分析することで材料表面の微細組織変化を非破壊評価するものである.したがって,大気中での観察を前提にしており,稼働中の機器に使用されている各種構造材料の組織変化に基づく劣化損傷状態を非破壊非接触で観察可能であることから,レーザ光で材料表面の元素分布の可視化という学術的な意義だけでなく,工学分野における各種構造材料の非破壊非接触での劣化損傷評価という極めて高い有用性があるものと期待している.

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (15 results)

All 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] 北京科学技術大学(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Disappearance of Martensitic Strengthened-Micro-Texture in Modified 9Cr-1Mo Steel Caused by Stress-Induced Acceleration of Atomic Diffusion at Elevated Temperatures2018

    • Author(s)
      Taichi Shinozaki, Ken Suzuki, and Hideo Miura
    • Journal Title

      Key Engineering Materials

      Volume: 774 Pages: 31-35

    • DOI

      10.4028/www.scientific.net/kem.774.31

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of prior microstructures and deformation parameters on the ultra-refining uniformity of Ti-Mo ferritic steel2018

    • Author(s)
      Lei Cheng, Wei Yu, Qingwu Cai, Jinlong Lv, Hideo Miura
    • Journal Title

      Materials Science and Engineering: A

      Volume: 733 Pages: 108-116

    • DOI

      10.1016/j.msea.2018.07.006

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of Damage Evolution in Nickel-Base Heat-Resistant Alloy Under Creep-Fatigue Loading Conditions2017

    • Author(s)
      Ken Suzuki, Takuya Murakoshi, Hiroki Sasaki, Hideo Miura
    • Journal Title

      ASME 2017 International Mechanical Engineering Congress and Exposition

      Volume: I

    • DOI

      10.1115/imece2017-72139

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Degradation of the Strength of Grains and Grain Boundaries of Ni-Base Superalloy under Creep and Creep-Fatigue Loadings2017

    • Author(s)
      Takuya Murakoshi, Hayato Sakamoto, Taichi Shinozaki, Ken Suzuki and Hideo Miura
    • Journal Title

      Advances in Fracture and Damage Mechanics

      Volume: XVI Pages: 31-34

    • DOI

      10.4028/www.scientific.net/kem.754.31

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Non-destructive evaluation of degradation of materials using reflectance spectrum of metallic elements2019

    • Author(s)
      Shin Kasama, Ken Suzuki, Hideo Miura
    • Organizer
      ZJU-TU Workshop on Advanced Materials and Manufacture
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 金属元素固有反射スペクトルを用いた構造材料劣化損傷非破壊検査技術2019

    • Author(s)
      笠間 新,鈴木 研,三浦 英生
    • Organizer
      日本機械学会東北学生会第49回卒業研究発表講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Observation of the Change of Micro Texture of Ni-base Alloy under Creep Loadings by Scanning a Laser Beam2018

    • Author(s)
      Hideo Miura
    • Organizer
      Asia-Pacific Conference on Fracture and Strength 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Degradation of the Strength of Grains and Grain Boundaries of Ni-Base Superalloy under Creep and Creep-Fatigue Loadings2017

    • Author(s)
      Hideo Miura
    • Organizer
      16th International Conference on Fracture and Damage Mechanics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] CREEP-DAMAGE-INDUCED DETERIORATION OF THE STRENGTH OF NI-BASE SUPERALLOY DUE TO THE CHANGE OF ITS MICROSTRUCTURE2017

    • Author(s)
      Hayato Sakamoto
    • Organizer
      ASME2017 International Mechanical Engineering Congress and Exposition
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Grain Boundary Damage of Ni-based Alloy617 Under Creep-Fatigue Loading at Elevated Temperatures2017

    • Author(s)
      Wataru Suzuki
    • Organizer
      1st CityU-TU Joint Workshop on Advanced Materials and Manufacture
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ni基耐熱合金におけるクリープ初期損傷メカニズムの解明2017

    • Author(s)
      澤瀬燈
    • Organizer
      日本機械学会東北支部第53期秋季講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Ni基超合金Alloy617の高温クリープ疲労損傷過程における結晶粒界損傷機構の検討2017

    • Author(s)
      鈴木亘
    • Organizer
      日本機械学会東北学生会第48回学生員卒業研究発表講演会
    • Related Report
      2017 Research-status Report
  • [Remarks] 三浦・鈴木研究室 東北大学工学研究科附属先端材料強度科学研究センター

    • URL

      http://www.miura.rift.mech.tohoku.ac.jp

    • Related Report
      2018 Annual Research Report
  • [Remarks] 東北大学 三浦・鈴木研究室

    • URL

      http://www.miura.rift.mech.tohoku.ac.jp

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-07-21   Modified: 2020-03-30  

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