Microstructural creep model for superalloys under complex thermomechanical loads (C04)

复杂热机械载荷下高温合金的微观结构蠕变模型 (C04)

• 批准号: 211503879
• 金额: --
• 依托单位: Abteilung Mikromechanische und makroskopische Modellierung
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/211503879?language=en
• 关键词: Microstructural; creep; model; superalloys; under

Project C4 aims at clarifying various questions related to the physical metallurgy of superalloys. A 3D dislocation dynamics model will be used to find out whether recovery processes induced by dislocation climb control the deformation kinetics under creep conditions and which microstructural influences are to be expected. Furthermore, the role of slowly diffusing central d-shell elements on creep solid solution strengthening will be clarified. Microstructure and dislocation climb will be integrated into a continuum crystal-plasticity-creep-model, a non-local formulation of which will also be used to study and describe scale effects that occur during micro and nanoindentation

C4项目旨在澄清与高温合金物理冶金有关的各种问题。三维位错动力学模型将被用来研究位错攀移引起的回复过程是否控制蠕变条件下的变形动力学，以及预期的微观组织影响。此外，还将阐明缓慢扩散的中心d壳元在蠕变固溶强化中的作用。微结构和位错攀移将被集成到连续晶体塑性蠕变模型中，该模型的非局部公式也将被用来研究和描述在微压痕和纳米压痕过程中发生的尺度效应