TiAl基合金动态再结晶临界模型建立

Zhipeng Wan; Yu Sun; Lianxi Hu; Huan Yu

TiAl基合金动态再结晶临界模型建立

Translated title of the contribution: Modeling of the Critical Conditions on Dynamic Recrystallization for TiAl-based Alloy

Zhipeng Wan
, Yu Sun
, Lianxi Hu^*
, Huan Yu

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

6 Scopus citations

Abstract

The flow stress behavior of powder metallurgy (PM) Ti-47Al-2Nb-2Cr alloy during hot deformation was investigated at 950~1150 °C and strain rates of 0.001~0.1 s^-1. The influence of deformation parameters on the critical conditions of the dynamic recrystallization behavior was studied. Based on the analysis of flow stress curves under different hot processing parameters, the critical strain (ε_c) and critical stress (σ_c) are obtained with the help of the critical condition theory proposed by Poliak and Jonas. It is also shown that the critical condition model is established by employing the strain rate and temperature compensation factor (Z): ε_c=1.2×10^-3Z^0.147. The occurrence of dynamic recrystallization behavior is promoted with the increasing of deformation temperature or the decreasing of strain rate. Moreover, the reliability of the established model is verified by the observation of deformed microstructure.

Translated title of the contribution	Modeling of the Critical Conditions on Dynamic Recrystallization for TiAl-based Alloy
Original language	Chinese (Traditional)
Pages (from-to)	835-839
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	47
Issue number	3
State	Published - 1 Mar 2018

Cite this

@article{55b037765f39401cb4101dbfc202b112,

title = "TiAl基合金动态再结晶临界模型建立",

abstract = "The flow stress behavior of powder metallurgy (PM) Ti-47Al-2Nb-2Cr alloy during hot deformation was investigated at 950\textasciitilde{}1150 °C and strain rates of 0.001\textasciitilde{}0.1 s-1. The influence of deformation parameters on the critical conditions of the dynamic recrystallization behavior was studied. Based on the analysis of flow stress curves under different hot processing parameters, the critical strain (εc) and critical stress (σc) are obtained with the help of the critical condition theory proposed by Poliak and Jonas. It is also shown that the critical condition model is established by employing the strain rate and temperature compensation factor (Z): εc=1.2×10-3Z0.147. The occurrence of dynamic recrystallization behavior is promoted with the increasing of deformation temperature or the decreasing of strain rate. Moreover, the reliability of the established model is verified by the observation of deformed microstructure.",

keywords = "Critical strain, Dynamic recrystallization, Ti-47Al-2Nb-2Cr alloy, Z parameter",

author = "Zhipeng Wan and Yu Sun and Lianxi Hu and Huan Yu",

year = "2018",

month = mar,

day = "1",

language = "繁体中文",

volume = "47",

pages = "835--839",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "3",

}

TY - JOUR

T1 - TiAl基合金动态再结晶临界模型建立

AU - Wan, Zhipeng

AU - Sun, Yu

AU - Hu, Lianxi

AU - Yu, Huan

PY - 2018/3/1

Y1 - 2018/3/1

N2 - The flow stress behavior of powder metallurgy (PM) Ti-47Al-2Nb-2Cr alloy during hot deformation was investigated at 950~1150 °C and strain rates of 0.001~0.1 s-1. The influence of deformation parameters on the critical conditions of the dynamic recrystallization behavior was studied. Based on the analysis of flow stress curves under different hot processing parameters, the critical strain (εc) and critical stress (σc) are obtained with the help of the critical condition theory proposed by Poliak and Jonas. It is also shown that the critical condition model is established by employing the strain rate and temperature compensation factor (Z): εc=1.2×10-3Z0.147. The occurrence of dynamic recrystallization behavior is promoted with the increasing of deformation temperature or the decreasing of strain rate. Moreover, the reliability of the established model is verified by the observation of deformed microstructure.

AB - The flow stress behavior of powder metallurgy (PM) Ti-47Al-2Nb-2Cr alloy during hot deformation was investigated at 950~1150 °C and strain rates of 0.001~0.1 s-1. The influence of deformation parameters on the critical conditions of the dynamic recrystallization behavior was studied. Based on the analysis of flow stress curves under different hot processing parameters, the critical strain (εc) and critical stress (σc) are obtained with the help of the critical condition theory proposed by Poliak and Jonas. It is also shown that the critical condition model is established by employing the strain rate and temperature compensation factor (Z): εc=1.2×10-3Z0.147. The occurrence of dynamic recrystallization behavior is promoted with the increasing of deformation temperature or the decreasing of strain rate. Moreover, the reliability of the established model is verified by the observation of deformed microstructure.

KW - Critical strain

KW - Dynamic recrystallization

KW - Ti-47Al-2Nb-2Cr alloy

KW - Z parameter

UR - https://www.scopus.com/pages/publications/85053714371

M3 - 文章

AN - SCOPUS:85053714371

SN - 1002-185X

VL - 47

SP - 835

EP - 839

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 3

ER -

TiAl基合金动态再结晶临界模型建立

Abstract

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