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RISReduced Order Constitutive Modeling of Directionally Solidified Ni Base Superalloys
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Temperaturedependent crystal viscoplasticity models are ideal for modeling largegrained, directionally solidified Nibase superalloys but are computationally expensive. This work explores the use of reducedorder models that ...
Thermomechanical Fatigue of Mar M247: Extension of a Unified Constitutive and Life Model to Higher Temperatures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The predictive capability of the Sehitoglu–Boismier unified constitutive and life model for MarM247 Nibase superalloy is extended from a maximum temperature of 871 آ°C to 1038 آ°C. The unified constitutive model ...
Efficient Methodologies for Determining Temperature Dependent Parameters of a Ni Base Superalloy Crystal Viscoplasticity Model for Cyclic Loadings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The prediction of temperaturedependent fatigue deformation and damage in directionally solidified and singlecrystal nickelbase superalloy components used in the hot section of gas turbine engines requires a constitutive ...