Hot deformation behavior and establishment of constitutive equation of Ti-25Al-14Nb-2Mo-1Fe alloy

Jun Cheng; Yong Mao; Zhentao Yu; Jinlong Niu; Sen Yu; Wen Zhang

doi:10.13251/j.issn.0254-6051.2015.01.035

Hot deformation behavior and establishment of constitutive equation of Ti-25Al-14Nb-2Mo-1Fe alloy

Jun Cheng, Yong Mao, Zhentao Yu, Jinlong Niu, Sen Yu, Wen Zhang

School of Marine Science and Technology

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

8 Scopus citations

Abstract

The hot deformation behavior of Ti-25Al-14Nb-2Mo-1Fe alloy was investigated at deformation temperatures 950-1100℃ with strain rate 0.001-1 s^-1, and the height reduction of 50% by using isothermal simulative compression testing. The results show that the flow stress of the alloy is sensitive to the hot working parameters, such as deformation temperature and strain rate. The true stress-true strain curves exhibit a peak flow stress, flow softening and steady state flow behavior. The stress exponent (n) and the apparent activation energy (Q) for hot deformation is calculated based on a hyperbolic-sine Arrhenius-type equation and multiple regression method. Constitutive equation is established for high temperature deformation of the alloy.

Original language	English
Pages (from-to)	146-151
Number of pages	6
Journal	Jinshu Rechuli/Heat Treatment of Metals
Volume	40
Issue number	1
DOIs	https://doi.org/10.13251/j.issn.0254-6051.2015.01.035
State	Published - 25 Jan 2015

Keywords

Constitutive equation
Hot deformation
Linear regression
TiAlNb based alloy

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10.13251/j.issn.0254-6051.2015.01.035

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title = "Hot deformation behavior and establishment of constitutive equation of Ti-25Al-14Nb-2Mo-1Fe alloy",

abstract = "The hot deformation behavior of Ti-25Al-14Nb-2Mo-1Fe alloy was investigated at deformation temperatures 950-1100℃ with strain rate 0.001-1 s-1, and the height reduction of 50% by using isothermal simulative compression testing. The results show that the flow stress of the alloy is sensitive to the hot working parameters, such as deformation temperature and strain rate. The true stress-true strain curves exhibit a peak flow stress, flow softening and steady state flow behavior. The stress exponent (n) and the apparent activation energy (Q) for hot deformation is calculated based on a hyperbolic-sine Arrhenius-type equation and multiple regression method. Constitutive equation is established for high temperature deformation of the alloy.",

keywords = "Constitutive equation, Hot deformation, Linear regression, TiAlNb based alloy",

author = "Jun Cheng and Yong Mao and Zhentao Yu and Jinlong Niu and Sen Yu and Wen Zhang",

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TY - JOUR

T1 - Hot deformation behavior and establishment of constitutive equation of Ti-25Al-14Nb-2Mo-1Fe alloy

AU - Cheng, Jun

AU - Mao, Yong

AU - Yu, Zhentao

AU - Niu, Jinlong

AU - Yu, Sen

AU - Zhang, Wen

PY - 2015/1/25

Y1 - 2015/1/25

N2 - The hot deformation behavior of Ti-25Al-14Nb-2Mo-1Fe alloy was investigated at deformation temperatures 950-1100℃ with strain rate 0.001-1 s-1, and the height reduction of 50% by using isothermal simulative compression testing. The results show that the flow stress of the alloy is sensitive to the hot working parameters, such as deformation temperature and strain rate. The true stress-true strain curves exhibit a peak flow stress, flow softening and steady state flow behavior. The stress exponent (n) and the apparent activation energy (Q) for hot deformation is calculated based on a hyperbolic-sine Arrhenius-type equation and multiple regression method. Constitutive equation is established for high temperature deformation of the alloy.

AB - The hot deformation behavior of Ti-25Al-14Nb-2Mo-1Fe alloy was investigated at deformation temperatures 950-1100℃ with strain rate 0.001-1 s-1, and the height reduction of 50% by using isothermal simulative compression testing. The results show that the flow stress of the alloy is sensitive to the hot working parameters, such as deformation temperature and strain rate. The true stress-true strain curves exhibit a peak flow stress, flow softening and steady state flow behavior. The stress exponent (n) and the apparent activation energy (Q) for hot deformation is calculated based on a hyperbolic-sine Arrhenius-type equation and multiple regression method. Constitutive equation is established for high temperature deformation of the alloy.

KW - Constitutive equation

KW - Hot deformation

KW - Linear regression

KW - TiAlNb based alloy

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U2 - 10.13251/j.issn.0254-6051.2015.01.035

DO - 10.13251/j.issn.0254-6051.2015.01.035

M3 - 文章

AN - SCOPUS:84923825213

SN - 0254-6051

VL - 40

SP - 146

EP - 151

JO - Jinshu Rechuli/Heat Treatment of Metals

JF - Jinshu Rechuli/Heat Treatment of Metals

IS - 1

ER -

Hot deformation behavior and establishment of constitutive equation of Ti-25Al-14Nb-2Mo-1Fe alloy

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