On the experimental validation of a mesoscopic grain boundary sliding-controlled flow model for structural superplasticity
On the experimental validation of a mesoscopic grain boundary sliding-controlled flow model for structural superplasticity
复制标题
结构超塑性细观晶界滑控流动模型的实验验证
DOI：
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复制
发表时间：
2013
影响因子：
4.5
通讯作者：
K. A. Padmanabhan
中科院分区：
文献类型：
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作者：
Sriharsha Sripathi;K. A. Padmanabhan
许多作者提出了不同的机制来控制不同材料的超塑性流动速率。从计算工作和美学的角度来看，这是非常可取的解释现象，独立的材料/系统考虑，在一个共同的基础上。为此，人们提出了一种细观晶界滑移控制变形模型，用以描述各种材料的超塑性流动。在本文中，一个严格的数值计算程序的实验验证的模型，它考虑到所有的物理要求的模型，提出。通过分析属于不同材料类别的许多系统的实验数据，并将分析结果与实验结果相匹配，建立了新程序的合理性。
Different mechanisms have been suggested by many authors as controlling the rate of superplastic flow in different materials. From the viewpoint of computational effort and aesthetics, it is highly desirable to explain the phenomenon, independent of the material/system considered, on a common basis. With this aim, a mesoscopic grain boundary sliding-controlled deformation model was proposed sometime ago as being responsible for superplastic flow in materials of different kinds. In this paper, a rigorous numerical computational procedure for the experimental validation of the model, which takes into account all the physical requirements of the model, is presented. The soundness of the new procedure is established by analysing the experimental data pertaining to many systems belonging to different classes of materials, and matching the results of the analysis with the experimental findings.