Performance of two different constitutive models and microstructural evolution of GH4169 superalloy

Xiawei Yang; Wenya Li; Yaxin Xu; Xiurong Dong; Kaiwei Hu; Yangfan Zou

doi:10.3934/mbe.2019049

Performance of two different constitutive models and microstructural evolution of GH4169 superalloy

Xiawei Yang, Wenya Li, Yaxin Xu, Xiurong Dong, Kaiwei Hu, Yangfan Zou

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The hot compression tests of GH4169 superalloy were performed in the deformation temperature range of 970 to 1150 ℃ and at the strain rate range of 0.001 to 10 s⁻¹. The flow stress is dependent on temperature and strain rate. The flow stresses were respectively predicted by Arrhenius-type and artificial neural network (ANN) models, and the predicted flow stresses were compared with the experimental data. A processing map can be obtained using the dynamic material models (DMM). A three-dimensional (3D) FEM model was established to simulate the hot compression process of GH4169 superalloy. Investigation of the microstructure of the deformed specimen was carried out using theoretical analysis, experimental research and FEM simulation. And the FEM model of compression tests were verified by experimental data.

Original language	English
Pages (from-to)	1034-1055
Number of pages	22
Journal	Mathematical Biosciences and Engineering
Volume	16
Issue number	2
DOIs	https://doi.org/10.3934/mbe.2019049
State	Published - 2019

Keywords

Arrhenius-type equation model
FEM model
GH4169 superalloy
Hot deformation behavior
Processing map

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10.3934/mbe.2019049

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title = "Performance of two different constitutive models and microstructural evolution of GH4169 superalloy",

abstract = "The hot compression tests of GH4169 superalloy were performed in the deformation temperature range of 970 to 1150 ℃ and at the strain rate range of 0.001 to 10 s−1. The flow stress is dependent on temperature and strain rate. The flow stresses were respectively predicted by Arrhenius-type and artificial neural network (ANN) models, and the predicted flow stresses were compared with the experimental data. A processing map can be obtained using the dynamic material models (DMM). A three-dimensional (3D) FEM model was established to simulate the hot compression process of GH4169 superalloy. Investigation of the microstructure of the deformed specimen was carried out using theoretical analysis, experimental research and FEM simulation. And the FEM model of compression tests were verified by experimental data.",

keywords = "Arrhenius-type equation model, FEM model, GH4169 superalloy, Hot deformation behavior, Processing map",

author = "Xiawei Yang and Wenya Li and Yaxin Xu and Xiurong Dong and Kaiwei Hu and Yangfan Zou",

note = "Publisher Copyright: {\textcopyright} 2019 the Author(s), licensee AIMS Press.",

year = "2019",

doi = "10.3934/mbe.2019049",

language = "英语",

volume = "16",

pages = "1034--1055",

journal = "Mathematical Biosciences and Engineering",

issn = "1547-1063",

publisher = "American Institute of Mathematical Sciences",

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}

TY - JOUR

T1 - Performance of two different constitutive models and microstructural evolution of GH4169 superalloy

AU - Yang, Xiawei

AU - Li, Wenya

AU - Xu, Yaxin

AU - Dong, Xiurong

AU - Hu, Kaiwei

AU - Zou, Yangfan

PY - 2019

Y1 - 2019

N2 - The hot compression tests of GH4169 superalloy were performed in the deformation temperature range of 970 to 1150 ℃ and at the strain rate range of 0.001 to 10 s−1. The flow stress is dependent on temperature and strain rate. The flow stresses were respectively predicted by Arrhenius-type and artificial neural network (ANN) models, and the predicted flow stresses were compared with the experimental data. A processing map can be obtained using the dynamic material models (DMM). A three-dimensional (3D) FEM model was established to simulate the hot compression process of GH4169 superalloy. Investigation of the microstructure of the deformed specimen was carried out using theoretical analysis, experimental research and FEM simulation. And the FEM model of compression tests were verified by experimental data.

AB - The hot compression tests of GH4169 superalloy were performed in the deformation temperature range of 970 to 1150 ℃ and at the strain rate range of 0.001 to 10 s−1. The flow stress is dependent on temperature and strain rate. The flow stresses were respectively predicted by Arrhenius-type and artificial neural network (ANN) models, and the predicted flow stresses were compared with the experimental data. A processing map can be obtained using the dynamic material models (DMM). A three-dimensional (3D) FEM model was established to simulate the hot compression process of GH4169 superalloy. Investigation of the microstructure of the deformed specimen was carried out using theoretical analysis, experimental research and FEM simulation. And the FEM model of compression tests were verified by experimental data.

KW - Arrhenius-type equation model

KW - FEM model

KW - GH4169 superalloy

KW - Hot deformation behavior

KW - Processing map

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DO - 10.3934/mbe.2019049

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SN - 1547-1063

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EP - 1055

JO - Mathematical Biosciences and Engineering

JF - Mathematical Biosciences and Engineering

IS - 2

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Performance of two different constitutive models and microstructural evolution of GH4169 superalloy

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Keywords

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