Hot Deformation Constitutive Equation of Spray Formed Superalloy GH742y

Author

Xuemin Zhang ; Fuwei Kang ; Fuyang Cao ; Hongyan Yue ; Yicheng Feng ; Haichao Li ; Zhiwei Wang ; Erjun Guo

Author_Institution

Sch. of Mater. Sci. & Eng., Harbin Univ. of Sci. & Technol., Harbin, China

Volume

1

fYear

2013

Firstpage

112

Lastpage

115

Abstract

Isothermal compression of spray formed superalloy GH742y has been conducted on Gleebe^-1500D hot simulation at the deformation temperatures ranging from 930°C to 1020°C where the strain rates have ranged from 0.01s^-1 to 10s^-1, and the height reduction of 50%. The effect of deformation temperatures and strain rates on the flow stress was analyzed with the true stress-true strain curve, and the hot deformation constitutive equation of superalloy GH742y was established using Arrhenius type hyperbolic sine equations. Error analysis shown that the established constitutive equations were coincident with experimental data well, and it provided the theory basis to make forging technology of superalloy GH742y.

Keywords

ageing; aluminium alloys; chromium alloys; cobalt alloys; compressibility; compressive testing; error analysis; forging; hyperbolic equations; molybdenum alloys; nickel alloys; niobium alloys; plastic flow; plasticity; spraying; stress-strain relations; superalloys; titanium alloys; tungsten alloys; Arrhenius type hyperbolic sine equations; Gleebe-1500D hot simulation; NiCrMoWTiNbCoAl; aging; deformation temperature; error analysis; flow stress; forging; hot deformation constitutive equation; isothermal compression testing; nickel-based GH742y alloy; spray formed superalloy GH742y; strain rates; stress-true strain curve; temperature 930 degC to 1020 degC; Artificial intelligence; Educational institutions; Nickel; Niobium; Strain; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technology (IFOST), 2013 8th International Forum on

Print_ISBN

978-1-4799-0931-5

Type

conf

DOI

10.1109/IFOST.2013.6616955

Filename

6616955