Prediction of the Flow Stress of a High Alloyed Austenitic Stainless Steel Using Artificial Neural Network

Zhao Hui Zhang; Dong Na Yan; Jian Tao Ju; Ying Han

doi:10.4028/www.scientific.net/MSF.724.351

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HomeMaterials Science ForumMaterials Science Forum Vol. 724Prediction of the Flow Stress of a High Alloyed...

Prediction of the Flow Stress of a High Alloyed Austenitic Stainless Steel Using Artificial Neural Network

Abstract:

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 10s¹. 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.

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Materials Science Forum (Volume 724)

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351-354

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https://doi.org/10.4028/www.scientific.net/MSF.724.351

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Online since:

June 2012

Authors:

Zhao Hui Zhang, Dong Na Yan, Jian Tao Ju, Ying Han

Keywords:

Artificial Neural Network (ANN), Austenitic Stainless Steel, BP Neural Network (BPNN), Hot Deformation

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