Grain Scale Crystal Plasticity Model with Slip and Microtwinning for a Third Generation Ni‐Base Disk Alloy

Song, Jin E.

doi:10.1002/9781118516430.ch18

Cited by 2 publications

References 17 publications

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Efficient Methodologies for Determining Temperature-Dependent Parameters of a Ni-Base Superalloy Crystal Viscoplasticity Model for Cyclic Loadings

Kirka

Smith

Neu

2014

Journal of Engineering Materials and Technology

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The prediction of temperature-dependent fatigue deformation and damage in directionally solidified and single-crystal nickel-base superalloy components used in the hot section of gas turbine engines requires a constitutive model that accounts for the crystal orientation in addition to the changing deformation mechanisms and rate dependencies from room temperature to extremes of the use temperature (e.g., 1050 °C). Crystal viscoplasticity (CVP) models are ideal for accounting for all of these dependencies. However, as the models become more physically realistic in capturing the true cyclic deformation mechanisms, increases the requirements to achieve an accurate model calibration. As a result, CVP models have yet to become viable for life analysis in industry. To make CVP models an industry relevant tool, the calibration times must be reduced. This paper explores methods to reduce the calibration time. First, a series of special calibration experiments are conceived and conducted on each relevant orientation and microstructure. Second, a set of parameterization protocols are used to minimize parameter interdependencies that reduce the amount of iteration required during the calibration. These experimental and calibration protocols are exercised using the CVP model of Shenoy et al. (2005, “Thermomechanical Fatigue Behavior of a Directionally Solidified Ni-Base Superalloy,” ASME J. Eng. Mater. Technol., 127(3), pp. 325–336) by calibrating a directionally solidified Ni-base superalloy across an industry relevant temperature range of 20 °C to 1050 °C.

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Efficient Methodologies for Determining Temperature-Dependent Parameters of a Ni-Base Superalloy Crystal Viscoplasticity Model for Cyclic Loadings

Kirka

Smith

Neu

2014

Journal of Engineering Materials and Technology

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Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment

Pitts

2019

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Values of the dislocation evolution parameters used in the thin beambending simulations to compare the approaches of calculating the plastic velocity gradient derivative. These parameters, for the CDD dislocation evolution model, Eq (2.67) and Eq (2.68), are appropriate for an FCC material and are slight modified from the values determined by [177] for nickel based on fitting conducted as supplemental

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Grain Scale Crystal Plasticity Model with Slip and Microtwinning for a Third Generation Ni‐Base Disk Alloy

Cited by 2 publications

References 17 publications

Efficient Methodologies for Determining Temperature-Dependent Parameters of a Ni-Base Superalloy Crystal Viscoplasticity Model for Cyclic Loadings

Efficient Methodologies for Determining Temperature-Dependent Parameters of a Ni-Base Superalloy Crystal Viscoplasticity Model for Cyclic Loadings

Modeling and Simulation of Microstructure Evolution and Deformation in an Irradiated Environment

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