TY - GEN
T1 - Prediction of the flow stress of a high alloyed austenitic stainless steel using artificial neural network
AU - Zhang, Zhaohui
AU - Yan, Dongna
AU - Ju, Jiantao
AU - Han, Ying
PY - 2012
Y1 - 2012
N2 - The high temperature flow behavior of as-cast 904L austenitic stainless steel was studied using artificial neural network (ANN). Isothermal compression tests were carried out at the temperature range of 1000°C to 1200°C and strain rate range of 0.01 to 10s-1. Based on the experimental flow stress data, an ANN model for the constitutive relationship between flow stress and strain, strain rate and deformation temperature was constructed by back-propagation (BP) method. Three layer structured network with one hidden layer and nine hidden neurons was trained and the normalization method was employed in training process to avoid over fitting. Modeling results show that the developed ANN model exhibits good performance for predicting the flow stresses of the 904L steel. Therefore, it can be used to reflect the hot deformation behavior in a wide working window.
AB - The high temperature flow behavior of as-cast 904L austenitic stainless steel was studied using artificial neural network (ANN). Isothermal compression tests were carried out at the temperature range of 1000°C to 1200°C and strain rate range of 0.01 to 10s-1. Based on the experimental flow stress data, an ANN model for the constitutive relationship between flow stress and strain, strain rate and deformation temperature was constructed by back-propagation (BP) method. Three layer structured network with one hidden layer and nine hidden neurons was trained and the normalization method was employed in training process to avoid over fitting. Modeling results show that the developed ANN model exhibits good performance for predicting the flow stresses of the 904L steel. Therefore, it can be used to reflect the hot deformation behavior in a wide working window.
KW - Artificial neural network
KW - Austenitic stainless steel
KW - Back-propagation neural network
KW - Hot deformation
UR - http://www.scopus.com/inward/record.url?scp=84872440700&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.724.351
DO - 10.4028/www.scientific.net/MSF.724.351
M3 - Conference contribution
AN - SCOPUS:84872440700
SN - 9783037854396
T3 - Materials Science Forum
SP - 351
EP - 354
BT - Eco-Materials Processing and Design XIII
PB - Trans Tech Publications Ltd.
T2 - 13th International Symposium on Eco-Materials Processing and Design, ISEPD 2012
Y2 - 7 January 2012 through 10 January 2012
ER -