Kinetics of Structural Transformations in Metal and Ceramic Systems

9817235 Khachaturyann这个理论奖致力于研究在相变中形成的共格微结构的演化问题。其长远目标是发展微观组织演化的虚拟样机，以便将来将计算机模拟集成到材料设计中。一是进一步发展适用于具有扩散相变和无扩散相变的弹性非均匀各向异性材料以及产生多种微观结构的复杂结晶学的模拟模型。这将需要在弹性和结构非均匀系统的弹性理论、相变理论和计算技术方面取得重大进展。第二个目标是对具有重要技术意义的系统--Ni-Al高温合金和Ti-Al(45-52%Al)合金进行三维模拟。将研究外加应力和输入参数的变化对组织的影响，目的是找到最大限度地减缓粗化动力学和组织控制的最佳制度。%该理论奖致力于研究相变过程中形成的共格微结构的演化问题。其长远目标是发展微观组织演化的虚拟样机，以便将来将计算机模拟集成到材料设计中。一是进一步发展适用于具有扩散相变和无扩散相变的弹性非均匀各向异性材料以及产生多种微观结构的复杂结晶学的模拟模型。这将需要在弹性和结构非均匀系统的弹性理论、相变理论和计算技术方面取得重大进展。第二个目标是对具有重要技术意义的系统--Ni-Al高温合金和Ti-Al(45-52%Al)合金进行三维模拟。将研究外加应力和输入参数的变化对组织的影响，目的是找到最大限度地减缓粗化动力学和组织控制的最佳制度。***

9817235KhachaturyanThis theoretical award addresses the problems of evolution of the coherent microstructure formed in phase transformations. The long-term goal is development of virtual prototyping of microstructure evolution for future integration of computer simulation in materials design.There are two overall objectives. The first is to further develop simulation models with applicability to elastically inhomogeneous anisotropic materials with diffusional and diffusionless phase transformations and with complex crystallography producing multi-variant microstructure. This will require a significant advancement in the theory of elasticity of elastically and structurally inhomogeneous systems, in the theory of phase transformations and in computational techniques.The second objective is to conduct three dimensional simulations of technologically important systems, the Ni-Al superalloys and the Ti-Al (45-52% Al) alloys. The effect of applied stress and variation of input parameters on the microstructure will be investigated with the goal of finding optimal regimes for maximum slowdown in coarsening kinetics and microstructure control. %%%This theoretical award addresses the problems of evolution of the coherent microstructure formed in phase transformations. The long-term goal is development of virtual prototyping of microstructure evolution for future integration of computer simulation in materials design.There are two overall objectives. The first is to further develop simulation models with applicability to elastically inhomogeneous anisotropic materials with diffusional and diffusionless phase transformations and with complex crystallography producing multi-variant microstructure. This will require a significant advancement in the theory of elasticity of elastically and structurally inhomogeneous systems, in the theory of phase transformations and in computational techniques.The second objective is to conduct three dimensional simulations of technologically important systems, the Ni-Al superalloys and the Ti-Al (45-52% Al) alloys. The effect of applied stress and variation of input parameters on the microstructure will be investigated with the goal of finding optimal regimes for maximum slowdown in coarsening kinetics and microstructure control. ***