Hot deformation behavior of Hastelly C276 superalloy

被引：22
|
作者：
Lu Yan-ling [1 ]
Liu Jin-xi [1 ,2 ]
Li Xiao-ke [1 ]
Liang Jian-ping [1 ]
Li Zhi-jun [1 ]
Wu Guan-yuan [1 ]
Zhou Xing-tai [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[2] Chongqing Jiaotong Univ, Coll Mechatron & Automobile Engn, Chongqing 400074, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷
基金：
中国国家自然科学基金;
关键词：
C276; superalloy; hot tension deformation; flow stress; constitutive equation; FLOW;
D O I：
10.1016/S1003-6326(12)61688-4
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Hot tensile behavior of C276 superalloy was studied in the deformation temperature range of 650-750 degrees C with the strain rate range of 0.35-35 mm/s. The results show that deformation temperature and strain rate both have significant influence on the flow stress. The flow stress decreases with the increase of deformation temperature, while increases with the increase of strain rate. The deformation of C276 superalloy exhibits dynamic recovery feature in the case of deformation temperature of 700 degrees C. However, when the deformation temperature increases to 750 degrees C, dynamic recrystallization behavior may occur. The flow stress of C276 alloy during hot deformation process can be characterized by Zener-Hollomon parameter including the Arrhenius term and the deformation activation energy is 327.66 kJ/mol. Therefore, a scientific basis is provided for the reasonable choice of processing parameters of C276 superalloy.
引用
收藏
页码：S84 / S88
页数：5
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