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Evaluation Reliability of Hybrid Surface Modification Material by Carburizing and Fine Particle Peening

Research Project

Project/Area Number 10650103
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionMeijo University

Principal Investigator

EGAMI Noboru  Meijo University/Faculty of Science and Technology Professor, 理工学部, 教授 (80076629)

Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2000: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1999: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsHybrid Surface Modification / Fine Particle Peening / Fatigue / S-N Cueve / Crack initiation Life / Mechanical Properties / Diffraction Pattern of Product / Fracture Mechanics / 表面改賃 / 複合処理 / 浸炭窒化 / 残留応力 / 疲労強度 / 応力拡大係数幅 / 浸炭処理 / 疲労き裂 / 圧縮残留応力
Research Abstract

(1)This study examines the effect of hybrid surface modification by vacuum carburizing and fine particle peening on fatigue strength behaviors of SCM415 material. We used quenched, vacuum carburized and hybrid, vacuum carburized and fine particle peened, specimen made of SCM415 and measured their hardness distribution, mechanical properties, fatigue strength and crack propagation. In terms of the fatigue behaviors, we investigated the relationship between the crack propagation rate da/dN and stress intensity factor range ΔK, da/dN and effective stress intensity factor range ΔKeff, as well as the fatigue crack initiation life N_i and crack failure life N_f of specimens. The results show specimens with hybrid surface modification are effective in the prevention of fatigue crack initiation and fatigue crack propagation.
(2)This study examines numerical analysis of particle velocity and temperature distribution of struck material surface in fine particle peening. When the particle is accelerated using a direct-pressure type, the velocity of a 50μm particle, just before striking the metal surface, was calculated to be 222m/s. In applying air pressure, the acceleration of fine particles show significant increase compared to larger sizes. Moreover, the experimental values agree well with the calculated ones. On the other hand, the temperature distributions show the maximum surface temperature to be 1000K and cools instantly.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 江上登 他4名: "微粒子ピーニングを施したSCM415真空浸炭材のハイブリッド表面改質効果"日本機械学会論文集A編. 66-650. 1936-1942 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 加賀谷忠治,江上登: "微粒子の高速衝突現象を利用した表面創製の動向"電気製鋼. 71-1. 51-58 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 江上登: "微粒子高速衝突による表面改質材の疲労強度特性"表面技術. 52-2. 173-176 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 江上登 他2名: "微粒子ピーニングを施したSCM415浸炭窒化材のハイブリッド表面改質効果"名城大学総合研究所紀要. 6(掲載決定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Egami, N., Kagaya, C., Inoue, N., Takeshita, H., and Mizutani, H.: "Hybrid Surface Modification of SCM415 Material by Vacuum Carburizing and Fine Particle Peening"Trans, JSME,A. Vol.66, No.650. 1936-1942 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kagaya, C., and Egami, N.: "Trends Surface Origination Using High Velocity Impact Phenomena of Fine Particles"Electric Furnace Steel. Vol.71, No.1. 51-58 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Egami, N.: "Fatigue Strength Properties of Surface Modification Steel by Fine Particle Bombarding"HYOMEN GIJUTSU, SFSJ. Vol.52, No.2. 173-176 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Egami, N., Kagaya, C., Takesita, H.: Bulletin of Research Institute of Meijo University. No6. 1-8 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 江上登 他4名: "微粒子ピーニングを施したSCM415真空浸炭材のハイブリッド表面改質効果"日本機械学会論文集A編. 66-650. 1936-1942 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 加賀谷忠治,江上登: "微粒子の高速衝突現象を利用した表面創製の動向"電気製鋼. 71-1. 51-58 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 江上登: "微粒子高速衝突による表面改質材の疲労強度特性"表面技術. 52-2. 173-176 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 江上登 他2名: "微粒子ピーニングを施したSCM415浸炭窒化材のハイブリッド表面改質効果"名城大学総合研究所紀要. 6(掲載決定). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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