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논문 기본 정보

자료유형
학술저널
저자정보
Xin Li (Northeastern University) Qiming Jiang (Northeastern University) Xiaoguang Zhou (Northeastern University) Guangming Cao (Northeastern University) Guodong Wang (Northeastern University) Zhenyu Liu (Northeastern University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.30 No.1
발행연도
2024.1
수록면
167 - 181 (15page)
DOI
10.1007/s12540-023-01493-9

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초록· 키워드

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Static softening behaviors that mainly includes recovery and recrystallization play the important role in controlling themicrostructure and mechanical properties of micro-alloyed steels during hot rolling, which is the essence for optimizing thecontrolled rolling processes. Chemical compositions and deformation conditions are the key factors to the static softeningbehaviors, but their quantitative influences are not clear due to the complex interactions among softening, precipitation, andhot deformation. In the present work, an integrated machine learning (ML) system for the static softening behaviors underdifferent chemical compositions and deformation conditions is established, based on ML modeling of strain-induced precipitationand the data collected from the published literatures. The particle swarm optimization (PSO) algorithm was usedto determine the recovery and recrystallization model parameters for different niobium (Nb) micro-alloyed steels. Supportvector machine (SVM) was used to establish the relationships between these parameters and compositions and processingparameters. By using the integrated ML system, the effects of compositions and deformation conditions on the static softeningcritical temperature (SSCT), static softening behavior were predicted. The predictions were compared with the measuredvalues, indicating that the ML system can accurately predict static softening behaviors for different steel grades under differentprocessing conditions, which lays a foundation for the accurate design of controlled rolling processes.

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