Constitutive analysis to predict high-temperature flow behavior of BFe10-1-2 cupronickel alloy in consideration of strain
Affiliation of Author(s):
冶金工程学院
Journal:
Materials and Design (SCI)
Key Words:
中文关键字：铁白铜;本构方程;流动应力;热变形，英文关键字：Cupronickel alloy; Constitutive equation;Flow stre
Abstract:
Isothermal compression of BFe10-1-2 cupronickel alloy was carried out on a Gleeble-3800 thermal simulation machine in a wide range of temperatures (1023–1273 K) and strain rates (0.001–10 s1). Then the experimental stress–strain data from isothermal hot compression tests were used to develop the constitutive equation. The effects of temperature and strain rate on deformation behaviors a represented by Zener–Holloman parameter in an exponent-type equation. The strain-dependent constitutive equation
of BFe10-1-2 cupronickel alloy was proposed. Subsequently, the correlation coefficient (R) and the average
absolute relative error (AARE) were introduced to verify the validity of developed constitutive equation, and values of R and AARE were 0.988 and 5.663% respectively, which indicated that the strain-dependent constitutive equation can lead a good agreement between the calculated and measured flow stresses in the elevated temperature range for the BFe10-1-2 cupronickel alloy.
First Author:
yangjie,wangwen,Kuaishe Wang,caijun
Paper Publications
