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MATERIALS DEVELOPMENT AND MICROSTRUCTURAL CONTROL FOR IMPROVING FATIGUE FRACTURE PROPERTIES IN FILM MATERIALS

Research Project

Project/Area Number 10555032
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Materials/Mechanics of materials
Research InstitutionOKAYAMA UNIVERSITY

Principal Investigator

TORII Tashiyuki  OKAYAMA UNIVERSITY, FACULTY OF ENGINEERING, PROFESSOR, 工学部, 教授 (80033249)

Co-Investigator(Kenkyū-buntansha) SHIMIZU Kenichi  OKAYAMA UNIVERSITY, FACULTY OF ENGINEERING, ASSISTANT, 工学部, 助手 (50294434)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 1999: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1998: ¥10,800,000 (Direct Cost: ¥10,800,000)
KeywordsFILM MATERIALS / FATIGUE / GRAIN / MICROSTRUCTURE / ROLLING DIRECTION / FILM-BONDING / ANNEALING / FRACTURE MECHANICS / 組織 / 膜接合材
Research Abstract

(1) Using pure copper films, the two types of specimen that rolling direction was parallel and perpendicular to loading direction were prepared for a film fatigue testing. As a result, in the film loaded in the perpendicular direction to the rolling, slips and cracks were initiated at less number of cycles and lower stress amplitude, while a crack propagated slower because of the large crack closure. Also, there was a difference in crack observation on the specimen surface between the two types of specimen with the large aspect ratio of the grain stretched by rolling.
(2) Commercially-pure iron films with the thickness of 100μ m were annealed at 873K, 1073K and 1173K after rolling, and the two types of specimen that rolling direction was parallel and perpendicular to loading direction were prepared for a film fatigue testing. The crystallographic analysis using EBSD system showed that the anisotropy of rolling texture remained after annealing, and there was a difference between the two … More types of specimen in crack observation. When compared at the same stress intensity factor range, ΔK_<est>K, evaluated from the crack opening displacement, fatigue cracks propagated faster in the film loaded to the perpendicular direction to the rolling. This was probably because the slip plane was different in accordance with the relationship between the rolling and crack propagation directions.
(3) Commercial grade iron films were bonded to steel base plates by using epoxy resin or by diffusion. When using the epoxy resin, the compressive residual stress induced by a shrinkage deformation of the resin during the heat-curing and cooling process was larger in the 100 μm than the 50 μm thickness film, thus increasing the fatigue life in the 100 μm thickness film-bonded plates. On the other hand, under the same effective stress intensity factor range evaluated from crack opening displacements, ΔK_<est>, the fatigue crack propagation rate, da/dN, was almost the same for all the epoxy bonded specimens, but relatively larger in the resin-bonded than the diffusion-bonded film. This showed the lower fatigue crack propagation resistance of the film itself bonded by the epoxy resin layer. Less

Report

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

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 鳥居太始之: "膜接合材料の疲労き裂伝ぱ挙動に及ぼす樹脂接着層の影響"材料システム. 17巻. 89-95 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 鳥居太始之: "銅膜材の疲労破壊特性に及ぼす圧延方向の影響"日本機会学会論文集(A編). 65巻. 461-468 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tashiyuki TORII: "A Method of Film Fatigue Testing and Effects of Rolling Direction on Fatigue Properties in Copper Film"Proceedings of the Advances in Electronic Packaging-1999, ASME. Vol.1. 867-874 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tashiyuki TORII: "Effects of Residual Stress on Fatigue Crack Propagation Behavior in Film-Bonded plates Using Epoxy Resin"Proceedings of the Advanced Materials Development & Performance. Vol.1. 370-375 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tashiyuki TORII: "Effects of Adhesive Resin Layer on Fatigue Crack Propagation Behavior in Film-Bonded Plates"Materials System. Vol.17. 89-95 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tashiyuki TORII: "Effects of Rolling Direction on Fatigue Fracture Properties in Copper film"Transactions of JSME. Vol.65. 461-468 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tashiyuki TORII: "A Method of Film Fatigue Testing and Effects of Rolling direction on Fatigue Properties in Copper Film"Proceedings of the Advances in Electronic Packaging-1999, ASME. Vol.1. 867-874 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tashiyuki TORII: "Effects of Residual Stress on Fatigue Crack Propagation Behavior in Film-Bonded Plates Using Epoxy Resin"Proceedings of the Advanced Materials Development & Performances. Vol.1. 370-375 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 鳥居 太始之: "銅膜材の疲労破壊特性に及ぼす圧延方向の影響"日本機会学会論文集(A編). 65巻631号. 461-468 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tashiyuki TORII: "A Method of Film Fatigue Testing and Effects of Rolling Direction"Proceedings of the Advances in Electronic Packaging 1999 (InterPACK'99). Vol. 26-1. 867-874 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tashiyuki TORII: "Effects of Residual Stress on Fatigue Crack Propagation Behavior Film-Bonded Plates Using Epoxy Resin"Proceedings of the Advances Materials Development & Performance. Vol.1. 370-375 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 鳥居太始之: "銅膜材の疲労破壊特性に及ぼす圧延方向の影響" 日本機械学会論文集(A編). 65巻631号. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tashiyuki TORII: "A Method of Film Fatigue Testing and Effects of Rolling Direction on Fatigue Properties in Copper Film" The PACIFIC/ASME International,Intersociety Electronic Packaging Conference (InterPACK'99). (1999)

    • Related Report
      1998 Annual Research Report

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

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