Hot deformation behavior of extruded AZ80 magnesium alloy

被引：32
作者：
Li, Hui-zhong [1 ,2 ,3 ]
Wei, Xiao-yan [1 ]
Ouyang, Jie [1 ]
Jiang, Jun [1 ]
Li, Yi [1 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[3] Cent S Univ, Minist Educ, Key Lab Nonferrous Met Mat Sci & Engn, Changsha 410083, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2013年 / 23卷 / 11期
关键词：
AZ80 magnesium alloys; hot deformation; processing map; Z parameter; MECHANICAL-PROPERTIES; FLOW-STRESS; MICROSTRUCTURE; TEMPERATURE; WORKING;
D O I：
10.1016/S1003-6326(13)62850-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The hot deformation behavior of extruded AZ80 magnesium alloy was studied through hot compression tests performed at temperatures ranging from 250 to 450 degrees C with strain rates varying from 0.001 to 10 s(-1). The flow stress was corrected due to the deformation heating. The Zener-Hollomon parameter (Z parameter) and processing map were established to describe the hot deformation behavior. The results indicate that the applicable deformation should be conducted at the strain rate of 0.1 s(-1) and the temperature range of 350-400 degrees C. Besides, the relationship between the microstructure evolution and Z parameter was also discussed. High temperature and low strain rate result in a low Z parameter, which leads to full dynamic recrystallization (DRX) and large DRX grain size in the microstructure. Considering processing map and microstructure, the hot deformation should be carried out at the temperature of 400 degrees C and the strain rate of 0.1 s(-1).
引用
收藏
页码：3180 / 3185
页数：6
相关论文
共 19 条
[1]   Influence of initial microstructure on the hot working flow stress of Mg-3Al-1Zn [J].
Beer, A. G. ;
Barnett, M. R. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 423 (1-2) :292-299
[2]   On the recrystallization behavior of homogenized AZ81 magnesium alloy: The effect of mechanical twins and γ precipitates [J].
Changizian, P. ;
Zarei-Hanzaki, A. ;
Abedi, H. R. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 558 :44-51
[3]   Influence of aging on microstructure and mechanical properties of AZ80 and ZK60 magnesium alloys [J].
Li Yan ;
Zhang Zhi-min ;
Xue Yong .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2011, 21 (04) :739-744
[4]   Transformation mechanism of lamellar microstructure of AZ80 wrought Mg alloy during warm deformation [J].
Li Zhao-zhi ;
Yang Ya-qin ;
Zhang Zhi-min .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2008, 18 :S156-S159
[5]   Constitutive relationship for high temperature deformation of powder metallurgy Ti-47Al-2Cr-2Nb-0.2W alloy [J].
Liang, Xiao-peng ;
Liu, Yong ;
Li, Hui-zhong ;
Zhou, Can-xu ;
Xu, Guo-fu .
MATERIALS & DESIGN, 2012, 37 :40-47
[6]   Deformation behavior of Mg-8Al magnesium alloy compressed at medium and high temperatures [J].
Lou, Yan ;
Li, Luoxing ;
Zhou, Jia ;
Na, Luan .
MATERIALS CHARACTERIZATION, 2011, 62 (03) :346-353
[7]   Effect of strain, strain rate and temperature on workability of AZ80 wrought magnesium alloy [J].
Lu Wen-quan ;
Quan Guo-zheng ;
Yu Chun-tang ;
Zhao Lei ;
Zhou Jie .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2012, 22 :S650-S655
[8]   Constitutive equations to predict high temperature flow stress in a Ti-modified austenitic stainless steel [J].
Mandal, Sumantra ;
Rakesh, V. ;
Sivaprasad, P. V. ;
Venugopal, S. ;
Kasiviswanathan, K. V. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 500 (1-2) :114-121
[9]   Development of dynamic recrystallization theory [J].
McQueen, HJ .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 387 :203-208
[10]   A one-parameter approach to determining the critical conditions for the initiation of dynamic recrystallization [J].
Poliak, EI ;
Jonas, JJ .
ACTA MATERIALIA, 1996, 44 (01) :127-136
12