%0 Journal Article
%A Mortezaei, S.
%A Arabi, H.
%A seyedein, S.H.
%A Momeni, A.
%A soltanalinezhad, M.
%T Investigation and Modelling the Flow Behavior of Fe-17Cr-7Ni Semi-Austenitic Precipitation Hardening Stainless Steel Using the Hyperbolic Sine Constitutive Equation
%J Modares Mechanical Engineering
%V 19
%N 6
%U http://mme.modares.ac.ir/article-15-24154-en.html
%R
%D 2019
%K Hot Deformation, Precipitation Hardening, Hot Compression, 17-7PH Stainless Steel,
%X In this study, a constitutive equation based on the hyperbolic sine Arrhenius-type model has been developed to describe the hot deformation behavior of a Fe-17Cr-7Ni (17-7PH), semi-austenitic precipitation hardening stainless steel. The experimental data obtained from hot compression tests at 950-1100°C and strain rates of 0.001-1 s-1 establish the constitutive equation. The material constants of α, A, n, and Q were calculated, using the developed model related to the applied strain by 6 The average error (AARE) and correlation coefficient (R) were used to evaluate the accuracy of the constitutive equation. The average values obtained for AARE and R were 5.17% and 0.9904, respectively. The results indicated that the developed constitutive equation can predict the flow stress behavior of the studied alloy with good accuracy over a wide range of experimental conditions. The model can be, therefore, recommended for analysis of hot deformation mechanism and microstructure evolution.
%> http://mme.modares.ac.ir/article-15-24154-en.pdf
%P 1439-1445
%& 1439
%!
%9
%L A-10-42241-5
%+ Metallurgical Engineering Department, Iran university of Science & Technology, Tehran, Iran
%G eng
%@ 1027-5940
%[ 2019