Plastic deformation behavior and processing maps of a Ni-based superalloy

Zhang, Peng; Hu, Chao; Ding, Chaogang; Zhu, Qiang; Qin, Heyong

doi:10.1016/j.matdes.2014.09.062

Cited by 84 publications

(30 citation statements)

References 25 publications

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“…Based on the dynamic material modeling(DMM), the processing maps have been widely used to examine the hot deformation behavior of different types of metals and A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 alloys [18][19][20][21][22][23][24] since it was developed by Y.V.R.K. Prasad et al in 1984 [25].…”

Section: Introdutionmentioning

confidence: 99%

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

Jiang

Zhang

2015

Materials & Design

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Section: Introdutionmentioning

confidence: 99%

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

Jiang

Zhang

2015

Materials & Design

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“…Different approaches are available to model the plastic deformation. The constitutive models to simulate the plastic deformation, such as the power law [36,37,96,100] and hyperbolic sine law [56,95,99], require model parameters that capture the strain hardening behavior of the alloy. After fitting the experimental data, the effects from material chemistry, geometry, and testing conditions are no longer distinguished by the model parameters, and, therefore, the trained models can only be used under specific conditions.…”

Section: Plastic Deformationmentioning

confidence: 99%

“…There have been a variety of attempts to develop platforms and tools to support materials design for different kinds of material classes and applications. In particular, for Ni-based superalloys, there have been a variety design optimization strategies employed, including using trade-off diagrams [21,50,69,100] and search algorithms [40,86,87]. An essential part of all these designs is the control of the precipitation of the γ strengthening phase and the high temperature properties.…”

Section: Introductionmentioning

confidence: 99%

A Computational Framework for Material Design

Kattner

Campbell

2017

Integr Mater Manuf Innov

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A computational framework is proposed that enables the integration of experimental and computational data, a variety of user-selected models, and a computer algorithm to direct a design optimization. To demonstrate this framework, a sample design of a ternary Ni-Al-Cr alloy with a high work-to-necking ratio is presented. This design example illustrates how CALPHAD phase-based, composition and temperature-dependent phase equilibria calculations and precipitation models are coupled with models for elastic and plastic deformation to calculate the stress-strain curves. A genetic algorithm then directs the search within a specific set of composition and processing constraints for the ideal composition and processing profile to optimize the mechanical properties. The initial demonstration of the framework provides a potential solution to initiate the material design process in a large space of composition and processing conditions. This framework can also be used in similar material systems or adapted for other material classes.Keywords Ni-based superalloy · Integrated computational materials engineering · Genetic algorithm · Material design

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“…Then, in order to observe the distribution of defects such as dislocation, the specimens were cut into slices with the thickness of 5 mm firstly, and then the slices were eventually thinned into 20 μm by ion-thinning method. After the treatment, the microstructures of the specimens were observed by transmission electron microscope (TEM) [27].…”

Section: Thermal Deformation Behaviormentioning

confidence: 99%

“…Taking the natural logarithm of both sides of Equation (26) leads to: lnrsinhpασ s qs " lnn 3`n4 lnZ (27) lnrsinhpασ ss qs " lnn 5`n6 lnZ (28) Eventually, the values of the material constants are obtained from the plots of lnrsinhpασ s qs-lnZ and lnrsinhpασ ss qs-lnZ (Figure 15a,b). …”

Section: Part I Constitutive Model Based On Work Hardening and Dynammentioning

confidence: 99%

Constitutive Model Based on Dynamic Recrystallization Behavior during Thermal Deformation of a Nickel-Based Superalloy

Zhang

Chen

et al. 2016

Metals

Self Cite

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Abstract:The thermal deformation and dynamic recrystallization (DRX) behavior of a nickel-based superalloy were investigated by the thermal compression test. The experimental results show that the process parameters have great influence on the flow stress of the superalloy. In addition, there is an inflection point on the DRX softening stage of the work-hardening rate versus stress curve. DRX under the conditions of higher temperatures and lower strain rates easily occurs when the strain reaches a critical level. Based on the classical dislocation density theory and the DRX kinetics models, a two-stage constitutive model considering the effect of work hardening-dynamic recovery and DRX is developed for the superalloy. Comparisons between the predicted and experimental data indicate that the values predicted by the proposed constitutive model are in good agreement with the experimental results.

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Plastic deformation behavior and processing maps of a Ni-based superalloy

Cited by 84 publications

References 25 publications

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

A Computational Framework for Material Design

Constitutive Model Based on Dynamic Recrystallization Behavior during Thermal Deformation of a Nickel-Based Superalloy

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