Early-stage nucleation of manganese sulfide particle and its processing evolution in Fe—3wt.%Si alloys

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• 作者：Wei Guo ; Li Meng ; Hongcai Wang ; Guochun Yan ; Weimin Mao
• 关键词：manganese sulfide (MnS) ; inhibitor ; nucleation ; precipitation ; grain ; oriented electrical steels
• 刊名：Frontiers of Materials Science
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：10
• 期：1
• 页码：66-72
• 全文大小：1,918 KB
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• 作者单位：Wei Guo (1)
  Li Meng (2) (3)
  Hongcai Wang (4)
  Guochun Yan (2)
  Weimin Mao (2)
  
  1. Department of Microstructures and Alloy Design, Max-Planck Institute für Eisenforschung, Düsseldorf, 40237, Germany
  2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
  3. Department of Beijing Research and Development, East China Branch of Central Iron and Steel Research Institute, Beijing, 100081, China
  4. Institute für Werkstoffe, Ruhr-Universität Bochum, Bochum, 44801, Germany
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science
  Chemistry
  Chinese Library of Science
  
• 出版者：Higher Education Press, co-published with Springer-Verlag GmbH
• ISSN：2095-0268

文摘

Manganese sulfide is often referred to as one of important inhibitors in grain-oriented electrical steels, which is of great importance to yield strong Goss texture. However, the early stage of nucleation for such inhibitors and their evolution during the processing has not been well understood. In present work we selected a Fe—3.12wt.%Si—0.11wt.%Mn—0.021wt.%S model system and used FE-SEM and atom probe tomography (APT) to investigate the precipitation behavior of MnS inhibitors at near atomic scale. It was found that the Si—S enriched clusters with sizes of 5—15 nm were formed close to the MnS particles. The density of inhibitors decreased after large pseudo-plane-strain compression because of the effect of dislocation motion, and then slightly increased again when sample was aged at 200°C for 48 h. The dislocations and grain boundaries can act as fast diffusion paths and assist the reemergence of Si—S enriched clusters. Keywords manganese sulfide (MnS) inhibitor nucleation precipitation grain-oriented electrical steels