Effect of processing parameters on flow behaviors and microstructure during high temperature deformation of GH4586 superalloy

Jiao Luo; Xiang yang Li; Cong Li; Miao quan Li

doi:10.1007/s11771-021-4606-0

Effect of processing parameters on flow behaviors and microstructure during high temperature deformation of GH4586 superalloy

Jiao Luo, Xiang yang Li, Cong Li, Miao quan Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

7 Scopus citations

Abstract

The apparent activation energy for deformation (Q) and strain rate sensitivity (m) of GH4586 superalloy are calculated and the variation trend is reasonably explained by the microstructure observations. Constitutive modelling of this superalloy is established and the processing maps at different strains are constructed. The results show that the Q value is in the range of 751.22–878.29 kJ/mol. At a temperature of 1060 °C, strain rate of 0.001 s⁻¹, and strain of 0.65, the m value of GH4586 superalloy reaches a maximum of 0.42. The optimal processing parameter of GH4586 superalloy is at a deformation temperature of 1050 °C and a strain rate of 0.001 s⁻¹. The domains of flow instability notably expand with increasing strain during high temperature deformation of GH4586 superalloy.

Translated title of the contribution	GH4586 合金高温变形过程中工艺参数对流动行为和微观组织的影响
Original language	English
Pages (from-to)	338-350
Number of pages	13
Journal	Journal of Central South University
Volume	28
Issue number	2
DOIs	https://doi.org/10.1007/s11771-021-4606-0
State	Published - Feb 2021

Keywords

apparent activation energy for deformation
constitutive model
GH4586 superalloy
processing maps
strain rate sensitivity

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10.1007/s11771-021-4606-0

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title = "Effect of processing parameters on flow behaviors and microstructure during high temperature deformation of GH4586 superalloy",

abstract = "The apparent activation energy for deformation (Q) and strain rate sensitivity (m) of GH4586 superalloy are calculated and the variation trend is reasonably explained by the microstructure observations. Constitutive modelling of this superalloy is established and the processing maps at different strains are constructed. The results show that the Q value is in the range of 751.22–878.29 kJ/mol. At a temperature of 1060 °C, strain rate of 0.001 s−1, and strain of 0.65, the m value of GH4586 superalloy reaches a maximum of 0.42. The optimal processing parameter of GH4586 superalloy is at a deformation temperature of 1050 °C and a strain rate of 0.001 s−1. The domains of flow instability notably expand with increasing strain during high temperature deformation of GH4586 superalloy.",

keywords = "apparent activation energy for deformation, constitutive model, GH4586 superalloy, processing maps, strain rate sensitivity",

author = "Jiao Luo and Li, {Xiang yang} and Cong Li and Li, {Miao quan}",

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doi = "10.1007/s11771-021-4606-0",

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AU - Luo, Jiao

AU - Li, Xiang yang

AU - Li, Cong

AU - Li, Miao quan

PY - 2021/2

Y1 - 2021/2

N2 - The apparent activation energy for deformation (Q) and strain rate sensitivity (m) of GH4586 superalloy are calculated and the variation trend is reasonably explained by the microstructure observations. Constitutive modelling of this superalloy is established and the processing maps at different strains are constructed. The results show that the Q value is in the range of 751.22–878.29 kJ/mol. At a temperature of 1060 °C, strain rate of 0.001 s−1, and strain of 0.65, the m value of GH4586 superalloy reaches a maximum of 0.42. The optimal processing parameter of GH4586 superalloy is at a deformation temperature of 1050 °C and a strain rate of 0.001 s−1. The domains of flow instability notably expand with increasing strain during high temperature deformation of GH4586 superalloy.

AB - The apparent activation energy for deformation (Q) and strain rate sensitivity (m) of GH4586 superalloy are calculated and the variation trend is reasonably explained by the microstructure observations. Constitutive modelling of this superalloy is established and the processing maps at different strains are constructed. The results show that the Q value is in the range of 751.22–878.29 kJ/mol. At a temperature of 1060 °C, strain rate of 0.001 s−1, and strain of 0.65, the m value of GH4586 superalloy reaches a maximum of 0.42. The optimal processing parameter of GH4586 superalloy is at a deformation temperature of 1050 °C and a strain rate of 0.001 s−1. The domains of flow instability notably expand with increasing strain during high temperature deformation of GH4586 superalloy.

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KW - constitutive model

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KW - processing maps

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Effect of processing parameters on flow behaviors and microstructure during high temperature deformation of GH4586 superalloy

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Keywords

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