Constitutive equations for elevated temperature flow behavior of commercial purity aluminum

被引：144
作者：
Ashtiani, H. R. Rezaei [1 ]
Parsa, M. H. [2 ]
Bisadi, H. [1 ]
机构：
[1] Iran Univ Sci & Technol, Sch Mech Engn, Dept Solid Mech, Tehran, Iran
[2] Univ Tehran, Sch Met & Mat Engn, Coll Engn, Tehran, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 545卷
关键词：
Hot deformation; Flow stress; Constitutive equation; Pure aluminum; STRESS; ALLOY; DEFORMATION; MODEL;
D O I：
10.1016/j.msea.2012.02.090
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In order to study the high-temperature flow stress of commercial purity aluminum (AA1070), isothermal hot compression tests were conducted at the deformation temperatures varying from 350 to 500 degrees C and strain rates ranging from 0.005 to 0.5 s(-1). The results showed that the flow stress of AA1070 was evidently affected by both the deformation temperature and strain rate. The influence of strain was also incorporated in the constitutive equation by considering the effects of strain on material constants which are consist of beta, alpha, n.A and activation energy Q. The predicted flow stress curves using the proposed constitutive equations well agree with the experimental results of the flow stress for AA1070. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：61 / 67
页数：7
相关论文
共 27 条
[1]   Modeling of high-temperature deformation of commercial pure aluminum (1050) [J].
Abo-Elkhier, M .
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2004, 13 (02) :241-247
[2]   AN INTERNAL VARIABLE CONSTITUTIVE MODEL FOR HOT-WORKING OF METALS [J].
BROWN, SB ;
KIM, KH ;
ANAND, L .
INTERNATIONAL JOURNAL OF PLASTICITY, 1989, 5 (02) :95-130
[3]   Constitutive equations for elevated temperature flow stress of Ti-6Al-4V alloy considering the effect of strain [J].
Cai, Jun ;
Li, Fuguo ;
Liu, Taiying ;
Chen, Bo ;
He, Min .
MATERIALS & DESIGN, 2011, 32 (03) :1144-1151
[4]  
Chen Z.Y., 2008, Acta Metallurgica Sinica (english letters), V21, P451
[5]   Prediction of the flow stress of A16061 at hot deformation conditions [J].
Gan Chunlei ;
Xue Yongdong ;
Wang Mengjun .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (12) :4199-4203
[6]   Mathematical modeling for high temperature flow behavior of as-cast Ti-45Al-8.5Nb-(W,B,Y) alloy [J].
He, Xiaoming ;
Yu, Zhongqi ;
Liu, Guiming ;
Wang, Wenge ;
Lai, Xinmin .
MATERIALS & DESIGN, 2009, 30 (01) :166-169
[7]  
Humphrey F., 2004, RECRYSTALLISATION RE
[8]  
Jonas J.J., 1969, Metall Rev, V14, P1, DOI [10.1179/095066069790138056, DOI 10.1179/095066069790138056]
[9]   Constitutive equations for high temperature flow stress prediction of Al-14Cu-7Ce alloy [J].
Li, Wei ;
Li, Hai ;
Wang, Zhixiu ;
Zheng, Ziqiao .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (12) :4098-4103
[10]   Constitutive modeling for elevated temperature flow behavior of 42CrMo steel [J].
Lin, Y. C. ;
Chen, Ming-Song ;
Zhong, Jue .
COMPUTATIONAL MATERIALS SCIENCE, 2008, 42 (03) :470-477
123