Flow behavior modeling and processing maps for P91 steel during hot deformation

被引：0
作者：
Chen, Zhiying [1 ]
Zhang, Ying [2 ]
Ren, Yunlai [3 ]
Wang, Ying [4 ]
机构：
[1] Shanghai Univ Engn Sci, Sch Mech & Automot Engn, Shanghai 201620, Peoples R China
[2] Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai 201620, Peoples R China
[3] Shanghai Dianji Univ, Sch Mech Engn, Shanghai 201306, Peoples R China
[4] Shanghai Dianji Univ, Sch Mat Engn, Shanghai 201306, Peoples R China
来源：
INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES | 2019年 / 26卷 / 02期
基金：
中国国家自然科学基金;
关键词：
P91; steel; Hot deformation; Flow stress; Constitutive equation; Processing map; CONSTITUTIVE ANALYSIS; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TEMPERATURE; EQUATION; SERVICE; STRESS; ALLOY;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Constitutive analysis and processing maps have been performed from hot compression tests on P91 steel over a range of temperatures between 950 degrees C to 1200 degrees C and strain rates of 0.05 to 1 s(-1). Hyperbolic sine type of constitutive equation has been established. The activation energy Q is 441.864 k J mol(-1), larger than the austenite lattice self-diffusion activation energy. The processing maps have been developed based on the dynamic materials model (DMM) and Prasad's instability criterion. The optimum hot deformation regions at 0.7 strain have at the temperature of 1000-1175 degrees C and strain rate of 0.05-0.14 s(-1); at the temperature of 1100-1200 degrees C and strain rate of 0.14-1 s(-1).
引用
收藏
页码：105 / 111
页数：7
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