Clarification and Functionalization of Micro -and Mezzo structure near Boundary between Different Phase in Single-crystalline Super Metals

单晶超级金属异相边界附近微观和中层结构的澄清和功能化

基本信息

  • 批准号:
    11450044
  • 负责人:
  • 金额:
    $ 5.63万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
  • 财政年份:
    1999
  • 资助国家:
    日本
  • 起止时间:
    1999 至 2000
  • 项目状态:
    已结题

项目摘要

In order to obtain the high performance material through the control of the microstructure of the materials the computational strategies to relate the microstructure and its evolution due to macroscopic deformation has been generalized to adopt the present problems. Subsequently, the methods have been applied to the problems associated with the evaluation of the macroscopic characteristic feature of the material with microstructures. The followings are the main results.(1) Subdivisions Method employing the eigen strain fields has been modified to obtain an accurate solution and the method has been used to evaluate the overall properties of short fiber reinforced composites and clarified the proper arrangement of reinforcement to realize the desired characteristic feature of the composite.(2) With a computational model employing the strain gradient constitutive equation for plastic deformation of the matrix material and a homogenization method, the effects of the volume fraction, size and distribution pattern of reinforced particles and direction of particle distribution with respect to applied stress on the macroscopic characteristic feature of the composites were clarified. The main mechanism of the increase of the deformation resistance in the plastic range is the high strain gradient in the matrix material, which increases with decreasing distance between the particles. These all suggest the way of an enhancement of resistance of the deformation behavior.(3) A three dimensional homogenization method employing the constitutive equation based on the crystal plasticity theory has been developed and the effect of the volume fraction of γ´ phase and the difference of crystalline directions of γ'/γ phases on the characteristic feature of the alloy. It is significantly affected by the strain distribution due to the inhomogeneous deformation induced by the γ´ phase precipitation on a microscopic scale
为了通过控制材料的微观结构来获得高性能材料,将微观结构及其在宏观变形下的演变的计算策略推广到目前的问题。随后,将该方法应用于具有微观结构的材料的宏观特性评价问题。以下是主要结果。(1)对采用本征应变场的细分法进行了改进,得到了精确的解,并将该方法用于评价短纤维增强复合材料的整体性能,明确了适当的增强排列,以实现复合材料所期望的特性特征。(2)采用基于基体材料塑性变形应变梯度本构方程的计算模型和均质化方法,阐明了增强颗粒的体积分数、尺寸和分布模式以及颗粒分布方向相对于外加应力对复合材料宏观特性的影响。塑性范围内变形抗力增大的主要机制是基体材料的高应变梯度,应变梯度随颗粒间距的减小而增大。这些都提出了提高变形抗力的方法。(3)建立了基于晶体塑性理论的本构方程三维均匀化方法,探讨了γ′相体积分数和γ′/γ相结晶方向差异对合金特征特征的影响。在微观尺度上,由于γ′相析出引起的变形不均匀,应变分布对其性能有显著影响

项目成果

期刊论文数量(74)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Yoshihiro Tomita: "Modeling and Estimation of Deformation Behavior of Particle Reinforced Metal-Matrix Composite"Int.J.Mech.Sci.. 42・11. 2249-2260 (2000)
富田义博:“颗粒增强金属基复合材料变形行为的建模和估计”Int.J.Mech.Sci.. 2249-2260 (2000)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Xi Yuan: "A non-local model of materials with microstructure based on asymptotic homogenization method"MSR International. (In press). (2001)
席媛:“一种基于渐进均质化方法的微结构材料非局域模型”MSR International。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Yoshihiro Tomita, Yoshikazu Higa, Takehiro Fujimoto: "Modeling and Estimation of Deformation Behavior of Particle Reinforced Metal-Matrix Composite"Int.J.Mech.Sci.. 42-11. 2249-2260 (2000)
Yoshihiro Tomita、Yoshikazu Higa、Takehiro Fujimoto:“颗粒增强金属基复合材料变形行为的建模和估计”Int.J.Mech.Sci. 42-11。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Xi Yuan Yoshihiro Tomita: "A non-local model of materials with microstructure based on asymptotic homogenization method"MSR International. (in press). (2001)
西元 Yoshihiro Tomita:“基于渐近均质化方法的具有微观结构的材料的非局域模型”MSR International。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Yoshikazu Higa: "Computational Modeling of deformation Behavior of Mickel-based Superalloy with Gamma Prime Phase Precipitates"Proc.AEPA2K. (印刷中). (2000)
Yoshikazu Higa:“具有伽马相沉淀的米克尔基高温合金的变形行为的计算模型”Proc.AEPA2K(出版中)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
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TOMITA Yoshihiro其他文献

TOMITA Yoshihiro的其他文献

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{{ truncateString('TOMITA Yoshihiro', 18)}}的其他基金

Strengthening and Functionalization of Polymer by Controlling the Morphology, Strength and Boundary Layer of Microscopic Filler
通过控制微观填料的形态、强度和边界层来增强和功能化聚合物
  • 批准号:
    22360054
  • 财政年份:
    2010
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Construction of Seamless Model for Material Microstructural Evolution and Prediction of Material Characteristics
材料微观结构演化无缝模型的构建和材料特性的预测
  • 批准号:
    18360061
  • 财政年份:
    2006
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Multiscale Model of Transformation Induced Plasticity and its Application to Morphogenesis with High Functional
相变诱导可塑性的多尺度模型及其在高功能形态发生中的应用
  • 批准号:
    14350059
  • 财政年份:
    2002
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Modelling of Deformation Behavior of Mesoscopic Scale of Materials and Its Application to Design of Functional Materia
材料细观尺度变形行为建模及其在功能材料设计中的应用
  • 批准号:
    07455053
  • 财政年份:
    1995
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Modelling of Deformation Behavior of Micro-Mezo-Macroscopic Scale of Glassy Polymers
玻璃态聚合物微观-介观-宏观尺度变形行为的建模
  • 批准号:
    07555032
  • 财政年份:
    1995
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Construction and Application of Wrinkling Limit Diagram (WLD)
起皱极限图(WLD)的构建及应用
  • 批准号:
    05555034
  • 财政年份:
    1993
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)
Microscopic deformation mechanism and its application to the evaluation of macroscopic deformation behavior of fiber reinforced composite materials
微观变形机制及其在纤维增强复合材料宏观变形行为评价中的应用
  • 批准号:
    04452123
  • 财政年份:
    1992
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Investigation and Prediction of Onset of Plastic Instabilities and Flow local izations under Dynamic Loading Condition
动态加载条件下塑性不稳定性和流动局部化发生的研究和预测
  • 批准号:
    62550075
  • 财政年份:
    1987
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

相似海外基金

Realization of High-performance Materials Through Control of Mezoscopic Structure of Materials
通过控制材料的介观结构实现高性能材料
  • 批准号:
    10555031
  • 财政年份:
    1998
  • 资助金额:
    $ 5.63万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
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