Microstructural Scales of Superplastic Flow: Experimental Study and Constitutive Modeling

9634179慕克吉，A.拟议的研究将在不同的微观结构尺度上研究超塑性流动：宏观(整个变形体积)、细观(粒群)和微观(晶体缺陷)。其科学目标是建立反映超塑性变形在不同微观结构尺度上发生的多轴本构关系。对这些不同微观结构尺度上的超塑性行为的基本了解将有助于开发超塑性流动的定量模型。实验工作与分析模型的平衡以及与应用问题的相关性是很好的。这项研究的成功将对控制工业成形参数、降低成形温度和开发新的工业成形工艺具有重要的工程意义。***

9634179 Mukherjee, A. The proposed research will study superplastic flow on different microstructural scales: macro (entire deformed volume), meso (grain groups) and micro (crystalline defects). The scientific goal is to develop a multi-axial constitutive law which reflects the occurrence of superplastic deformation on different microstructural scales. Fundamental understanding of superplastic behavior at these different microstructural scales will enable development of quantitative models for superplastic flow. The balance of experimental work with analytical modeling and the relevance to applied problems is excellent. The successful performance of this research will have significant engineering impact on the control of industrial forming parameters, reduction in forming temperature and the development of new industrial forming processes. ***