Kinematics and Dynamics Model of GH4169 Alloy for Thermal Deformation

• Published in: Journal of iron and steel research, international Vol. 17; no. 7; pp. 75 - 78
• Main Authors: WANG, Zhong-tang, ZHANG, Shi-hong, CHENG, Ming, LI, De-fu, YANG, Xiao-hong
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01.07.2010; Springer Singapore
• Subjects: Applied and Technical Physics; Dynamic models; Dynamic recrystallization; dynamics model; Engineering; GH4169 superalloy; GH4169合金; Grain size; kinematics model; Machines; Manufacturing; Materials Engineering; Materials Science; Mathematical models; Metallic Materials; Nickel base alloys; Physical Chemistry; Processes; Steels; Strain rate; Stress-strain relationships; Superalloys; thermal deformation; 刚果民主共和国; 动力学模型; 动态再结晶; 应力应变曲线; 模型合金; 热变形; 运动学模型; GH4169 superalloy; dynamics model; thermal deformation; kinematics model
• ISSN: 1006-706X; 2210-3988
• DOI: 10.1016/S1006-706X(10)60160-4

The stress-strain curves and microstructure properties of superalloy GH4169 was tested by thermal simulation experiment with different parameters,which were deformation temperature and strain rate and strain and original grain size.The influence of technology parameters on crystal grain size of dynamic recrystallization（DRC）was analyzed.The kinematics model of superalloy GH4169 was established,in which the relation between grain size of dynamic recrystallization and function Z（Zener-Hollomon）and parameters was described.The dynamics model of superalloy GH4169 was put forward,which described the relation between the quantity of dynamic recrystallization and function Z and parameters.The research results showed that the grain size of dynamic recrystallization increased with increasing the temperature and decreasing the strain rate.And the grain size of DRC bore no relationship to original grain size.And the quantity of dynamic recrystallization decreased with increasing the original grain size.