Integration of the system free energy concept and the Phase-field method for the risk-based materials design

系统自由能概念与相场方法的集成用于基于风险的材料设计

基本信息

  • 批准号:
    14350368
  • 负责人:
  • 金额:
    $ 8.96万
  • 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:
    2002
  • 资助国家:
    日本
  • 起止时间:
    2002 至 2004
  • 项目状态:
    已结题

项目摘要

The main purpose of this research is to predict the microstructural evolution of metallic materials showing a complex microstructure on the basis of the integration method of the system free energy concept and the Phase-field method. The system free energy is represented by the chemical free energy, the interfacial energy and the elastic strain energy, and it can predict the stable microstructure of the materials at a given time. On the other hand, the Phase-field method is based on the field variables as a function of the field indicating the state of microstructure, and the microstructural evolution is represented by the time evolution of the varialbles. In this study, high Cr ferritic steels were treated, because they show the most complex microstructure among metallic materials and hence they are suitable for the purpose of this study. For the ferritic steels, the TTP(Time-Temperature-Precipitation) diagram was constructed for Fe-C-Cr-Co-W-Mo system, and the phase boundary between the coherent and incoherent Laves phases was determined for Fe-C-Cr-W system. Also, The phase-field simulation was carried out for the recrystallization of iron. Through these results, it was found that microstructural evolution can be estimated when the change in the system free energy was evaluated quantitatively with a sequence of time. From this point of view, the system free energy was evaluated quantitatively for the martensite structure. As a result, the contribution of the interfacial energies such as grain boundary energy and packet boundary energy were found to be about one tenth of the elastic strain energy in the martensite phase. Furthermore, it was found that about 80% of the elastic strain energy was released by the tempering at 1053K for 1h. In conclusion, the most important thing for the risk based materials design is to evaluate the system free energy change quantitatively and it makes easy for the phase-filed simulation.
本研究的主要目的是基于系统自由能概念和相场方法相结合的方法来预测具有复杂微观结构的金属材料的微观组织演变。系统自由能用化学自由能、界面能和弹性应变能来表示,它可以预测材料在给定时刻的稳定微观结构。另一方面,相场法是基于场变量作为指示微观组织状态的场的函数,微观组织的演化由变量的时间演化来表示。在这项研究中,高铬铁素体钢是金属材料中组织最复杂的,因此适合于本研究的目的。对于铁素体钢,建立了Fe-C-Cr-Co-W-Mo系的TTP(时间-温度-析出)图,确定了Fe-C-Cr-W系的共格Laves相和非共格Laves相之间的相界。并对铁的再结晶过程进行了相场模拟。通过这些结果发现,当用时间序列定量地评价体系自由能的变化时,可以估计微观结构的演变。从这一点出发,定量计算了马氏体组织的体系自由能。结果表明,晶界能和包界面能等界面能的贡献约为马氏体相弹性应变能的十分之一。此外,还发现在1053K回火1h后,大约80%的弹性应变能被释放。综上所述,基于风险的材料设计最重要的是定量评估体系的自由能变化,这为相场模拟提供了方便。

项目成果

期刊论文数量(29)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Dependence of Solvus Temperature of the Laves Phase on (Mo+W+Re) Contents in High Cr Ferritic Steels
高铬铁素体钢中 Laves 相固溶温度对 (Mo W Re) 含量的依赖性
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Y.Murata;M.Kamiya;A.M.Abdel-Daiem;T.Koyama;M.Morinaga;R.Hashizume
  • 通讯作者:
    R.Hashizume
Diffusion of Refractory Elements in N-A1-X (X : Re,W) Ternary Alloys
N-A1-X(X:Re,W)三元合金中难熔元素的扩散
Md.Monirzzaman, Y.Murata, M.Morinaga, R.Hashizume et al.: "Alloy Design of Ni-Based Single Crystal Superalloys for the Combination of Strength and Surface Stability at Elevated Temperatures."ISIJ International. Vol.43, No.8. 1244-1252 (2003)
Md.Monirzzaman、Y.Murata、M.Morinaga、R.Hashizume 等人:“在高温下结合强度和表面稳定性的镍基单晶高温合金的合金设计。”ISIJ International。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
M.Nakai, Y.Murata, M.Morinaga, R.Hashizume: "Effect of Impurity Sulfur on the Formation of Cr_2O_3 and SiO2 at the Early Stage of Steam Oxidation in both Ferritic and Sustenitic Steels"Materials Transaction. Vol.44, No.9. 1830-1838 (2003)
M.Nakai,Y.Murata,M.Morinaga,R.Hashizume:“铁素体钢和奥氏体钢蒸汽氧化早期阶段杂质硫对 Cr_2O_3 和 SiO2 形成的影响”材料交易。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Hydrogen Dissolution into 10% Chromium Ferritic Steels during High-Temperature Steam Oxidation
氢%20溶解%20成%2010%%20铬%20铁素体%20钢%20期间%20高温%20蒸汽%20氧化
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    M.Nakai;K.Nagai;Y.Murata;M.Morinaga;S.Matsuda;M.Kanno
  • 通讯作者:
    M.Kanno
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MURATA Yoshinori其他文献

MURATA Yoshinori的其他文献

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{{ truncateString('MURATA Yoshinori', 18)}}的其他基金

Analysis of inhomogeneous microstructural evolution in metallic materials with the aid of system free energy
借助系统自由能分析金属材料的不均匀微观结构演化
  • 批准号:
    24656407
  • 财政年份:
    2012
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Detection and quantity of vascular bundles in oil palm trunk using cell wall birefringence on exposure to polarized light
利用偏振光下细胞壁双折射检测油棕树干中维管束的数量
  • 批准号:
    23580463
  • 财政年份:
    2011
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Comprehensive understanding of the energy change of hierarchic structural materials by the analogy of the probability resonance and its application to materials design
用概率共振类比全面认识多级结构材料的能量变化及其在材料设计中的应用
  • 批准号:
    20360312
  • 财政年份:
    2008
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Quantification of Hierarchal Microstructures of Metallic Materials and the Prediction of the strength by Homogenization Method
金属材料的分级微观结构的量化和均质化方法的强度预测
  • 批准号:
    17360337
  • 财政年份:
    2005
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Trial to Develop High strength Nickel-based Alloys possessing. High resistance to both Hot-corrosion and Thermal Fatigue by a Heat Treated Process producing a Composite Structure
尝试开发高强度镍基合金。
  • 批准号:
    10555230
  • 财政年份:
    1998
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Hot Corrosion Resistance of Nickel Based Alloys Evaluated by a Molecular Orbital Calculation.
通过分子轨道计算评估镍基合金的热腐蚀性能。
  • 批准号:
    08650815
  • 财政年份:
    1996
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Construction of a New Method for the Design of Transition-metal-based Alloys with the Aid of a d-electrons Theory
借助d电子理论构建过渡金属基合金设计新方法
  • 批准号:
    03402046
  • 财政年份:
    1991
  • 资助金额:
    $ 8.96万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (A)

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