Thermal forming properties of a Cr-Mn-Si-Ni alloyed naval steel under different forming conditions by different constitutive models

作     者：Jia-Li Pang Ze-Lin Zhu Jing-Yu Zhang Qiang Chen Jie Zhou Yi Meng Sumio Sugiyam Jia-Li Pang;Ze-Lin Zhu;Jing-Yu Zhang;Qiang Chen;Jie Zhou;Yi Meng;Sumio Sugiyama

作者机构：College of Materials Science and EngineeringChongqing UniversityChongqing400044China Southwest Technology and Engineering Research InstituteChongqing400039China Institute of Industrial ScienceThe University of TokyoTokyo153-8505Japan 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第10期

页      面：3515-3529页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0824[工学-船舶与海洋工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：financially supported by the National Natural Science Foundation of China (No.51975071) the Venture & Innovation Support Program for Chongqing Overseas Returnees Fundamental Research Funds for the Central Universities (No.2021CDJKYJH0001) 

主　　题：Naval steel Thermal compression Recrystallization Constitutive model 

摘      要：A series of thermal compression tests on a CrMn-Si-Ni alloyed naval steel were carried out at different strain rates(0.0005-0.0100 s^(-1)) at different temperatures(1023-1173 K).Based on the friction-corrected data obtained from the compression tests,strain-compensated Arrhenius-type constitutive(SCAC) and backpropagation artificial neural network(BP-ANN) models with the optimized structure of the Cr-Mn-Si-Ni alloyed naval steel were *** optimized BP-ANN model,where the operation time and overfitting of BP-ANN were shortened and avoided,respectively,exhibited improved predictive *** two models were assessed further in terms of the correlation coefficient(R),average absolute relative error,and root mean square *** results validated that the optimized BP-ANN model predicted the flow behavior of the Cr-Mn-Si-Ni alloyed naval steel better than the SC AC *** effect of the forming temperature and strain rate on the microstructural evolution behavior of the naval steel during thermoplastic deformation was investigated through the electron backscatter diffraction analysis of the compressed *** was observed that the dynamic recrystallization of the naval steel was promoted by an increase in the forming temperature and a decrease in the strain rate during thermoplastic deformation.