期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 712, 期 -, 页码 687-695出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.04.116
关键词
Ni3Al-based alloy; Hot deformation behavior; Constitutive equation; Processing map; Dynamic recrystallization
资金
- China National Funds for Distinguished Young Scientists [51325401]
- National Natural Science Foundation of China [U1660201, 51474156]
- National High Technology Research and Development Program of China [2015AA042504]
To study the hot deformation behavior of Ni3Al-based alloy, hot compression tests were conducted in the temperature range of 1050-1250 degrees C with the strain rates from 0.01 to 10 s(-1). With the increase in deformation temperature and the decrease in strain rate, flow stress of the Ni3Al-based alloy would be decreased. Based on the obtained constitutive equation, the calculated values of peak flow stress are in good agreement with the experimental ones, and the activation deformation energy is determined as 802.71 kJ/mol. Moreover, by dynamic material model (DMM), processing maps of the hot-deformed Ni3Al-based alloys are established. It is indicated that the optimum processing parameters for the studied alloy correspond to deformation temperature of 1250 degrees C and strain rates from 0.01 to 0.1 s(-1). Specimens deformed under the optimum processing conditions exhibit fine and uniform grains, which is a typical dynamic recrystallization (DRX) microstructure. The DRX degree could be effectively enhanced with the increase of deformation temperature and the decrease of strain rate. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据