A constitutive equation coupling the grain size during the high temperature deformation of Ti-6.62Al-5.14Sn-1.82Zr alloy

被引：1

作者：

Luo, J. ^{[1
]}

Li, M. Q. ^{[1
]}

Hu, Y. Q. ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China

来源：

PRICM 6: SIXTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-3 | 2007年 / 561-565卷

关键词：

titanium alloy; constitutive equation; high temperature deformation; grain size; fuzzy neural network;

D O I：

10.4028/www.scientific.net/MSF.561-565.155

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A constitutive equation has been established to describe the effect of grain size on the deformation behavior of Ti-6.62Al-5.14Sn-1.82Zr alloy during the high temperature. In this paper, firstly a steady flow stress model is proposed, and a function relating to the grain size is introduced to modify the steady flow stress model. Meanwhile, a microstructure model established by the fuzzy neural network method is applied to calculate the grain size of prior a phase during the high temperature deformation of Ti-6.62Al-5.14Sn-1.82Zr alloy. The calculated flow stress using the present constitutive equation shows a good agreement with the experimental flow stress of the Ti-6.62Al-5.14Sn-1.82Zr alloy. The relative maximum error was not more than 15%.

引用

页码：155 / 158

页数：4

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