Affiliation:
1. Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing, School of Material Science and Engineering, Chongqing University, Chongqing 400044, China
2. Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
Abstract
In order to characterize the flow behaviors of SAE 5137H steel, isothermal compression tests at the temperatures of 1123 K, 1213 K, 1303 K, 1393 K, and 1483 K, and the strain rates of 0.01 s−1, 0.1 s−1, 1 s−1, and 10 s−1 were performed using a Gleeble 3500 thermo-mechanical simulator. The analysis results of true stress-strain curves show that the flow stress decreases with temperature increasing and strain rate decreasing. In order to accurately and efficiently characterize the complex flow behaviors, the intelligent learning method backpropagation–artificial neural network (BP-ANN) was combined with the particle swarm optimization (PSO), namely, the PSO-BP integrated model. Detailed comparisons of the semi-physical model with improved Arrhenius-Type, BP-ANN, and PSO-BP integrated model for the flow behaviors of SAE 5137H steel in terms of generative ability, predictive ability, and modeling efficiency were presented. The comparison results show that the PSO-BP integrated model has the best comprehensive ability, BP-ANN is the second, and semi-physical model with improved Arrhenius-Type is the lowest. It indicates that the PSO-BP integrated model can accurately describe the flow behaviors of SAE 5137H steel.
Funder
National Natural Science Foundation of China
Chongqing Natural Science Foundation General Project
Subject
General Materials Science
Reference26 articles.
1. Microstructure and mechanical properties of gear steels after high temperature carburization;Yang;J. Iron Steel Res.,2013
2. Experimental characterization of electron beam welded SAE 5137H thick steel plate;Kattire;IOP Conf. Ser. Mater. Sci. Eng.,2017
3. Ratchetting–multiaxial fatigue damage analysis in gear rolling contact considering tooth surface roughness;Zhang;Wear,2019
4. Processing research on hardenability characteristic od gear steel 20CrMnTiH5;Xie;China Metall.,2013
5. Dynamic mechanical properties of FGH4097 powder alloy and the applications of its constitutive model;Li;J. Mater. Res. Technol.,2023
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献