TY - JOUR
T1 - Determination of Constitutive Equation for Thermo-mechanical Processing of INCONEL 718 Through Double Multivariate Nonlinear Regression Analysis
AU - Hussain, Mirza Zahid
AU - Li, Fuguo
AU - Wang, Jing
AU - Yuan, Zhanwei
AU - Li, Pan
AU - Wu, Tao
N1 - Publisher Copyright:
© 2015, ASM International.
PY - 2015/7/24
Y1 - 2015/7/24
N2 - The present study comprises the determination of constitutive relationship for thermo-mechanical processing of INCONEL 718 through double multivariate nonlinear regression, a newly developed approach which not only considers the effect of strain, strain rate, and temperature on flow stress but also explains the interaction effect of these thermo-mechanical parameters on flow behavior of the alloy. Hot isothermal compression experiments were performed on Gleeble-3500 thermo-mechanical testing machine in the temperature range of 1153 to 1333 K within the strain rate range of 0.001 to 10 s−1. The deformation behavior of INCONEL 718 is analyzed and summarized by establishing the high temperature deformation constitutive equation. The calculated correlation coefficient (R) and average absolute relative error (AARE) underline the precision of proposed constitutive model.
AB - The present study comprises the determination of constitutive relationship for thermo-mechanical processing of INCONEL 718 through double multivariate nonlinear regression, a newly developed approach which not only considers the effect of strain, strain rate, and temperature on flow stress but also explains the interaction effect of these thermo-mechanical parameters on flow behavior of the alloy. Hot isothermal compression experiments were performed on Gleeble-3500 thermo-mechanical testing machine in the temperature range of 1153 to 1333 K within the strain rate range of 0.001 to 10 s−1. The deformation behavior of INCONEL 718 is analyzed and summarized by establishing the high temperature deformation constitutive equation. The calculated correlation coefficient (R) and average absolute relative error (AARE) underline the precision of proposed constitutive model.
KW - INCONEL 718
KW - constitutive relationship
KW - double multivariate nonlinear regression
UR - http://www.scopus.com/inward/record.url?scp=84931578182&partnerID=8YFLogxK
U2 - 10.1007/s11665-015-1542-x
DO - 10.1007/s11665-015-1542-x
M3 - 文章
AN - SCOPUS:84931578182
SN - 1059-9495
VL - 24
SP - 2744
EP - 2756
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 7
ER -