Theme
A Study of High-performed and High-strengthened Materials with Microstructure

    　　　Nickel-based superalloys are widely used in the industries manufacturing jet engines, gas turbines and nuclear reactors. Many of these alloys are strengthened by fine particles of L12 type ordered gamma prime phase precipitated coherently with the matrix. Therefore, the control and prediction of gamma prime precipitate morphology is indispensable to the development of advanced heat resistant alloys and to the determination of its macroscopic parameter and behavior. However, the effect of stress applied, environmental temperature and crystal orientation on the morphology of gamma prime precipitate and its evolution has not been clarified yet.
    　　　In this study, in order to clarify the macro/micro-scopic characteristic feature of nickel-based superalloys, we formulated the homogenization method for the materials obeying the constitutive equation with strain and strain rate dependency and developed corresponding finite element method which has been employed for the characterization of the micro- to macroscopic mechanical behavior of the alloy with gamma prime precipitation, taking into account microstructural evolution process. The effect of such morphologies as size, shapes, volume fraction and spatial distributions of gamma prime precipitates and the crystallographic orientations of nickel on the macroscopic mechanical characteristics of the alloy has been investigated. It has been clarified that the elastic properties are not substantially affected by the gamma prime morphologies, whereas they significantly depend on the crystallographic orientation. In inelastic range, however, it has been elucidated that the microscopic deformation behavior depending in the complex way on the morphology manifest itself on the strong microscopic structural dependent macroscopic characteristics feature. Subsequently, the method developed has been applied to the estimation of the nonuniform macroscopic deformation behavior of nickel-based superalloy.
  1. A Study of High-performed and High-strengthened Materials with Microstructure

    2. Yoshikazu HIGA
    Doctoral Dissertation, Graduate School of Science and Technology, Kobe Univ.,(In Japanese) (2000/08).
  2. A Study of Brinell Hardness Test of Porous Materials

    3. Moriaki GOYA, Yoshikazu HIGA, Kiyohiro MIYAGI, Toshiyasu SUEYOSHI and Masao TOKITA,
    Trans. JSME, Vol. 64A, No. 624, (1998), pp. 2100-2106.(In Japanese)
  3. Modeling and Estimation of Deformation Behavior of Particle Reinforced Metal-Matrix Composite

    4. Yoshihiro TOMITA, Yoshikazu HIGA and Takehiro FUJIMOTO
    Int. J. Mech. Sci., 42(11), (2000), pp. 2249-2260.
  4. Modeling and Computational Simulation of Deformation Behavior of Particulate-Reinforced Composite Materials by Homogenization Method

    5. Yoshikazu HIGA and Yoshihiro TOMITA,
    Trans. JSME, Vol. 66A, No. 648, (2000), pp. 1441-1446.(In Japanese)
  5. An Estimation of Multiscale Analysis for Composite Materials based of Eigenstrains and Its Application

    6. Yoshikazu HIGA, Hiroyuki YOSHIKUNI and Yoshihiro TOMITA,
    Trans. JSME, Vol. 67A, No. 656, (2001), pp. 638-643.(In Japanese)
  6. Multiscale Characterization of Deformation Behavior of Particulate-Reinforced Metal-Matrix Composite

    7. Yoshihiro TOMITA and Yoshikazu HIGA
    Computational Mechanics of Solid Materials at Large Strains, (2003/03), 259-268., Kluwer Academic Pub.
  7. Computational Simulation of Characteristic Length Dependent Deformation Behavior of Polycrystalline Metals

    8. Yoshikazu HIGA, Yukihide SAWADA and Yoshihiro TOMITA,
    Trans. JSME, Vol. 69A, No. 679, (2003), pp. 523-529.(In Japanese)
  8. Computational Modeling and Characterization of Materials with Periodic Microstructure

    9. Yoshikazu HIGA, Hiroshi KITAGAWA and Yoshihiro TOMITA
    IUTAM Symposium on Mesoscopic Dynamics in Fracture Process & Materials Strength, SOLID MECHANICS AND ITS APPLICATIONS, Kluwer Academic Pub, Dordrecht. (in press).
  1. Modeling of Material Property with Micro Structure by Homogenization Method and its Application

    2. Takahiro YAMASHITA, Yoshihiro TOMITA, Yoji SHIBUTANI and Yoshikazu HIGA
    Proceedings of the 73th JSME KANSAI Regular Meeting, No.984-1(1998/03/23-24), pp.5_43-44, KOBE Univ.
  2. Computational Simulation of Deformation Behavior of Ni-based Superalloys Single Crystal with g'-Phase Precipitates

    3. Yoshikazu HIGA, Takahiro YAMASHITA, Hiromasa YAMASHITA, Yoshihiro TOMITA and Toru GOTO
    Proceedings of the 75th JSME Spring Annual Meeting, No.98-1-1(1998/03/31-04/03), pp.193-194, TOKYO Eng. Univ.
  3. Toward the High-performed and High-strengthened Materials with Microstructures

    4. - Modeling and Numerical Simulation of Deformation Behavior in Ni-based Superalloys with g' Precipitates -
    Yoshikazu HIGA and Yoshihiro TOMITA
    Proceedings of the 47th JSMS Meeting - Poster and Pannel Discussion -, (1998/05/21-22). p.7, MEIJOH Univ.
  4. Computational Simulation of Large Deformation in Polycrystalline Plates

    5. Naoki YAMAMOTO, Yoshikazu HIGA and Yoshihiro TOMITA
    Proceedings of the 11th JSME Comp. Mech. Div.(CMD) Meeting, No.98-2(1998/11/18-20). p.89-90, KANSAI Univ.
  5. Estimation of Mechanical Properties of Elastic Solid Containing Inclusion with Any Geometry

    6. Hiroyuki YOSHIKUNI, Yoshihiro TOMITA and Yoshikazu HIGA
    Proceedings of the 11th JSME Comp. Mech. Div. Meeting, No.98-2(1998/11/18-20). p.99-100, KANSAI Univ.
  6. Computational Simulation of Deformation Behavior of Ni-based Superalloy with g'-Phase Precipitates: - Modeling by Homogenization Method Taking into Account for Plastic Anisotropy -

    7. Yoshikazu HIGA and Yoshihiro TOMITA
    Proceedings of the JSME Mat. & Mech. Div. Meeting '98(M&M'98), Vol.A, No.98-5(1998/11/21-22), pp.155-156, KUMAMOTO Univ.
  7. Modeling and Computational Simulation of Deformation Behavior of Ni-based Superalloy with g'-Phase Precipitates

    8. Yoshikazu HIGA and Yoshihiro TOMITA
    The 22th NCP Symposium, (1998/12/04-05), p.45-46, KKR HIROSHIMA.
  8. Estimation for Mechanical Properties of Ni-based Heat Resistant Alloys with g'-Phase Precipitates
    Yoshihiro TOMITA, Yoshikazu HIGA, Toru GOTOH(Fukui Univ. Tech.) and Hiroshi ISHIKAWA(MHI)
    Sponsoring small and medium business industrial science exchange meetings/ Proc. Ind. Sci. Exchange Meetings '99, (1999/02/04), p.36-39, Kobe Univ.
  9. Computational Prediction of Mechanical Properties of Nickel-based Superalloy with Gamma Prime Phase Precipitates

    10. Yoshikazu HIGA and Yoshihiro TOMITA
    Advance Materials and Modeling of Mechanical Behaviour, (Edits. F. Ellyin, J. W. Provan), The 8th International Conference on Mechanical Behavior of Materials, Vol.III(1999/05/16-21), pp.1095-1099. Victoria, British Columbia, CANADA
  10. Modeling of Material Property with Micro Structure by Homogenization Method and its Application

    11. Yoshikazu HIGA, Yuan XI and Yoshihiro TOMITA
    The 48th, PMD Committee, The 1stPMD Meeting, (1999/09/20), JSMS KYOTO.
  11. Estimation of Mechanical Properties of Elastic Solid with Microstructure based on Eigenstrain

    12. Hiroyuki YOSHIKUNI, Yoshikazu HIGA and Yoshihiro TOMITA
    The JSME Mat. & Mech. Div. Meeting '99, (1999/10/09-11), KYOTO Univ.
  12. Modeling and Computational Simulation of Deformation Behavior of Particulate-Reinforced Composite Materials by Homogenization Method

    13. Yoshikazu HIGA and Yoshihiro TOMITA
    The 24th Composite Material Symp., Quater century Aniversary of JCMS, (1999/11/18-19), pp.75-76, Osaka City Univ.
  13. Three-dimensional Simulation of Deformation Behavior of Ni-based Superalloy with Gamma Prime Phase Precipitates

    14. Yoshikazu HIGA and Yoshihiro TOMITA
    Proceedings of the 12th JSME CMD Meeting '99, No.99-5(1999/11/24-26), pp.85-86, Matsuyama-shi Community Center.
  14. Deformation Behavior of Polycrystalline Solids Obeying Non-Schmid Law

    15. Naoki YAMAMOTO, Yoshikazu HIGA and Yoshihiro TOMITA
    Proceedings of the 12th JSME CMD Meeting '99, No.99-5(1999/11/24-26), pp.87-88, Matsuyama-shi Community Center.
  15. Analysis of Deformation Behavior of Ni-based Superalloy with g'-phase precipitates using Homogenization Method.

    16. Yoshikazu HIGA
    191th Mechanical Engineering Meeting, No.00-11(2000/07/12), Osaka-Kagaku-Gijyutsu Center, Osaka.
  16. Computational Simulation of Torsional Deformation Behavior of Axisymmetric Polycrystalline Materials

    17. Yukihide SAWADA, Yoshikazu HIGA, Naoki YAMAMOTO and Yoshihiro TOMITA
    JSME Annual Meeting' y2k, (2000/08/01-04), Meijo Univ., Nagoya, Aichi, JAPAN
  17. Multiscale Modeling and Estimation of Deformation Behavior of Metal-Matrix Composite

    18. Yoshihiro TOMITA and Yoshikazu HIGA
    Advances In Computational Engineering & Sciences, (Atluri, S. N. and Brust, F. W. Eds.), Vol.II, pp.1745-1750, Tech Science Press, (2000).
    International Conference for Computational Engineering Science 2000, ICES2K, (2000/08/21-25), Los Angeles, CA, USA
  18. Computational Modeling of Deformation Behavior of Nickel-Based Superalloy with Gamma-Prime-Phase Precipitates

    19. Yoshikazu HIGA and Yoshihiro TOMITA
    Advances In Computational Engineering & Sciences, (Atluri, S. N. and Brust, F. W. Eds.), Vol.II, pp.1116-1121, Tech Science Press, (2000).
    International Conference for Computational Engineering Science 2000, ICES2K, (2000/08/21-25), Los Angeles, CA, USA
  19. An accurate estimation of multiscale mechanical properties for composite materials based on eigenstrain theory and its applications

    20. Yoshikazu HIGA and Yoshihiro TOMITA(Kobe Univ.)
    JSME 13th Computational Mechanics Divisions Conference Y2K, (2000/11/28-30), Toyohashi University of Technology.
  20. Computational Simulation and Modeling of Characteristic Length Scale Dependent Deformation Behavior of Nickel-based Superalloy

    21. Yoshikazu HIGA and Yoshihiro TOMITA(Kobe Univ.)
    JSME 13th Computational Mechanics Divisions Conference Y2K, (2000/11/28-30), Toyohashi University of Technology.
  21. Multiscale Modeling and Simulation of Deformation Behavior of Nickel-based Superalloy

    22. Yoshikazu HIGA and Yoshihiro TOMITA(Kobe Univ.)
    The 24th NCP Symposium, (2000/12/08-09), Kohyasan WAKAYAMA.
  22. Finite Element Strategies for Evaluation of Mechanical Characteristics of Material with Mesoscopic Structures

    23. Yoshihiro TOMITA(Kobe Univ.), Yoshikazu HIGA, Yoshio ABE(Nippon Steel Co.), Masaaki FUJIOKA and Yukito HAGIWARA
    The 3rd Supermetal Symposium, (2001/01/29-30), National Olympics Memorial Youth Center, TOKYO.
  23. Computational Simulation and Modeling of Deformation Behavior of Ni-based Superalloy using Homogenization Method

    24. Yoshikazu HIGA and Yoshihiro TOMITA(Kobe Univ.)
    The JSME Mat. & Mech. Div. Meeting '2001, (2001/08/01-03), Kitami Tech. Univ.
  24. Characteristic Length Dependent Micro- to Macroscopic Feature of Particle Reinforced Composite Materials

    25. Yoshihiro TOMITA(Kobe Univ.) and Yoshikazu HIGA
    8th International Conference on Composites Engineering(ICCE/8), (2001/08/05-11), Sheraton Mencey Hotel, Tenerife, Spain.
  25. Multiscale Characterization of Deformation Behavior of Metal-Matrix Composite under Plane Strain Conditions

    26. Yoshihiro TOMITA(Kobe Univ.) and Yoshikazu HIGA
    IUTAM Symposium Computational Mechanics of Solid Materials at Large Strains, (2001/08/20-24), University of Stuttgart, Germany.
  26. Computational simulation of characteristic length dependent deformation behavior of polycrystalline metals

    27. Yukihide SAWADA(Kobe Univ.), Yoshikazu HIGA and Yoshihiro TOMITA(Kobe Univ.)
    The JSME 14th Computational Mechanics Div. Conference '2001, (2001/11/28-30), Hokkaido Univ., Sapporo.
  27. Modeling and Computational Simulation of Characteristic Length Dependent Deformation Behavior of Nickel-based Superalloy with Gamma-Prime-Precipitates

    28. Yoshikazu HIGA, Hiroshi KITAGAWA and Yoshihiro TOMITA(Kobe Univ.)
    The JSME 14th Computational Mechanics Div. Conference '2001, (2001/11/28-30), Hokkaido Univ., Sapporo.
  28. Multiscale modelling for evaluation of mechanical characteristics of material with mesoscopic structures using finite element method

    29. Yoshihiro TOMITA(Kobe Univ.), Yoshikazu HIGA, Yukihide SAWADA(Kobe Univ.), Yoshio ABE(Nippon Steel Co.), Masa-aki FUJIOKA and Shuji AIHARA
    The 4th Supermetal Symposium, (2001/12/18-19), National Olympics Memorial Youth Center, TOKYO.
  29. Crack Opening Behavior in Amorphous Metal; - Comparative Study of Large Scale MD and Elasto-Viscoplastic FEM -

    30. Ryosuke MATSUMOTO, Hiroshi KITAGAWA, Akihiro NAKATANI and Yoshikazu HIGA
    Proceedings of the 77th JSME KANSAI Regular Meeting, No.024-1(2002/03/22-23), pp.7_9-10, Kobe Univ. Mercantile Marine.
  30. Computational Simulation of Characteristic Length Dependent Deformation Behavior of Nickel-based Superalloy using Homogenization Method

    31. Yoshikazu HIGA, Hiroshi KITAGAWA and Yoshihiro TOMITA(Kobe Univ.)
    4th U.S. National Congress of Applied Mechanics, (2002/06/23-28), Virginia Polytechnic Institute & State Univ., Blacksburg, VA., USA.
  31. Evaluation of Mechanical Characteristics for Ceramic Materials by Nanoindentation Testing; -Nano-Hardness for Si3N4 and its Estimation using Continuum Dislocation Model-

    32. Yoshikazu HIGA, Masahiro ITADANI, Hiroshi KITAGAWA and Akihiro NAKATANI
    JSME Mat. & Mech. Div. Meeting '02(M&M2002), (2002/10/12-14), Yamaguchi Univ., Yamaguchi.
  32. Computational Analysis for Deformation Behavior of Polycrystalline Metals based on the Strain Gradient Crystal Plasticity

    33. Yoshikazu HIGA, Tatsuhiko NAMAKURA(Kobe Univ.) and Yoshihiro TOMITA(Kobe Univ.)
    The JSME 15th Computational Mechanics Div. Conference '2002, (2002/11/02-04), Kagoshima Univ., Kagoshima.
  33. Inverse Problem Interpretation for Nano-indentation Test on Ceramics using a Prismatic Dislocation Model

    34. Masahiro ITADANI, Yoshikazu HIGA, Akihiro NAKATANI and Hiroshi KITAGAWA
    Proceedings of the 78th JSME KANSAI Regular Meeting, No.034-1(2003/03/22-23), pp.5_41-42, Osaka Inst. Univ.
  34. Elastic Wave Propagation in Heterogeneous Media

    35. Masatoshi YAMASHITA, Akihiro NAKATANI, Yoshikazu HIGA and Hiroshi KITAGAWA
    Proceedings of the 78th JSME KANSAI Regular Meeting, No.034-1(2003/03/22-23), pp.5_51-52, Osaka Inst. Univ.
  35. Computational Modeling and Characterization of Materials with Periodic Microstructure Using Asymptotic Homogenization Method

    36. Yoshikazu HIGA, Hiroshi KITAGAWA and Yoshihiro TOMITA(Kobe Univ.)
    IUTAM Symposium on Mesoscopic Dynamics in Fracture Process and Materials Strength, (2003/07/06-11), Hotel Osaka Sun Palace, Osaka, Japan.
  36. Effect of Heterogeneity of Grain Size on Deformation Behavior of Polycrystalline Metals

    37. Shin-ya NAGANO, Tatsuhiko NAKAMURA, Yoshikazu HIGA, Tadashi HASEBE and Yoshihiro TOMITA
    The JSME 16th Computational Mechanics Div. Conference '2003, (2003/11/22-24), Kobe Univ., Kobe.
  37. Computational Simulation of the Deformation Behavior of Polycrystalline Metals; - Effect of the Collective Behavior of Grains -

    38. Tatsuhiko NAKAMURA, Yoshikazu HIGA, Tadashi HASEBE and Yoshihiro TOMITA
    The JSME 16th Computational Mechanics Div. Conference '2003, (2003/11/22-24), Kobe Univ., Kobe.
  38. Computational Analysis of Deformation Characteristic of Super-Fine-Grain Dual Phase Steel using Crystal Plasticity Homogenization Method

    39. Yoshikazu HIGA
    JSME Computational Mech. Div. A-TS01-15, "Mutiscale Computational Solid Mechanics", (2003/11/25), Kobe Univ., Kobe.
  39. Knoop Hardness Testing for Amorphous Thin Film and Estimation of Deformation Region around the Indentation using Nanoindentation Test

    40. Naoto FUJINAGA, Yoshikazu HIGA, Akihiro NAKATANI and Hiroshi KITAGAWA
    Proceedings of the 79th JSME KANSAI Regular Meeting, No.044-1(2004/03/22-23), pp.8_25-26, Osaka Pref. Univ.

Last Update 2004/04/02

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