期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 516, 期 1-2, 页码 131-137出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2009.03.029
关键词
Aluminum alloy with erbium; Hot deformation; DRV; Microstructure; Zener-Hollomon parameter
类别
资金
- National 973 Project [2005CB623706]
- 863 Project [2006AA03A207]
- NSFC [50525413]
- PHR (IHLB)
The hot deformation behavior of an Al-5.7 wt.%Mg alloy with erbium was studied by compressive deformation tests in the strain rate range of 0.001-10 s(-1) and temperature range of 300-500 degrees C. The constitutive equations were presented considering the values of A and beta as a function of strain in the exponential function form. The error of predicted and measured data was less than 9%. Dynamic recrystallization was restrained by precipitate with Er and dynamic recovery dominated in the hot deformation. The mechanism of dynamic recovery was dislocation movement and the development of microstructure during deformation can be characterized by the Z parameter, and then the relationship between subgrains and deformation parameters have been also established. (C) 2009 Elsevier B.V. All rights reserved.
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