Modeling of Microstructrual Evolution during Rapid Thermal Processing

快速热处理过程中微观结构演化的建模

• 批准号: 9112251
• 负责人: Raymond Thompson
• 金额: $ 42.03万
• 依托单位: University of Alabama at Birmingham
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-11-01 至 1995-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112251&HistoricalAwards=false
• 关键词: Modeling; Microstructrual; Evolution; during; Rapid

Theoretical and experimental studies are conducted on metal alloy microstructural evolution during rapid thermal cycling. Particle dissolution, grain growth, liquid film formation, and subsequent solidification of intergranular liquid are considered. A physical model of the process is being developed, computer simulation employed, and experimental verification pursued. Analytical transmission electron microscopy is the primary microanalytical technique. The completed research should produce a computational model of microstructural evolution during a complete thermal cycle typical of a weld heat-affected zone. %%% Many multiphase alloys are subjected to rapid thermal processing, such as welding and surface modification through high energy beam melting or thermal spraying. This research will provide a verified computational model applicable to these processes.

对快速热循环过程中金属合金微观结构的演变进行了理论和实验研究。 考虑了颗粒溶解、晶粒生长、液膜形成以及随后晶间液体的凝固。 正在开发该过程的物理模型，采用计算机模拟，并进行实验验证。 分析透射电子显微镜是主要的微量分析技术。 已完成的研究应产生焊接热影响区典型的完整热循环期间微观结构演变的计算模型。 %%% 许多多相合金要进行快速热处理，例如通过高能束熔化或热喷涂进行焊接和表面改性。 这项研究将提供一个适用于这些过程的经过验证的计算模型。