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  Evolution of (Ti, Mo)C particles in austenite of a Ti–Mo-bearing steel

Wang, Z., Zhang, H., Guo, C., Leng, Z., Yang, Z., Sun, X., et al. (2016). Evolution of (Ti, Mo)C particles in austenite of a Ti–Mo-bearing steel. Materials and Design, 109, 361-366. doi:10.1016/j.matdes.2016.07.081.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-B246-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-B247-6
Genre: Journal Article

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 Creators:
Wang, Zhenqiang1, Author              
Zhang, Han2, Author              
Guo, Chunhuan1, Author              
Leng, Zhe1, Author              
Yang, Zhigang3, Author              
Sun, Xinjun4, Author              
Yao, Chunfa4, Author              
Zhang, Zhengyan4, Author              
Jiang, Fengchun1, Author              
Affiliations:
1Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, China, persistent22              
2Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
3Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Haidian District, Beijing, China, persistent22              
4Central Iron and Steel Research Institute, No. 76, Xueyuan Nanlu, Beijing, China, persistent22              

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Free keywords: Austenite; Blast enrichment; Coarsening; Crystal microstructure; Diffusion; Particles (particulate matter); Strain energy, Austenite matrix; Deformed microstructure; Diffusion controlled growth; High temperature; Interface reactions; Isothermal holding; Particle morphologies; Recovery and recrystallization, Precipitation (chemical)
 Abstract: The present work investigated the evolution of (Ti, Mo)C particles in austenite of a Ti-Mo-bearing steel during isothermal holding after hot deformation at 925 °C. Results show that the (Ti, Mo)C particles sequentially undergo dislocation-assisted diffusion controlled growth stage, interface-reaction controlled slow coarsening stage, and bulk diffusion controlled fast coarsening stage. The Mo-enriched region near the outer layer of the (Ti, Mo)C particles results in the slow coarsening stage. To reduce the total interface and strain energy correlated with austenite matrix, the particle morphology evolution follows spherical → polyhedral → irregular route. Compared to TiC, dispersive refined (Ti, Mo)C particles suppress austenite recovery and recrystallization more effectively, which favors maintaining the deformed microstructures at high temperatures. © 2016 Elsevier Ltd

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Language(s): eng - English
 Dates: 2016-11-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.matdes.2016.07.081
BibTex Citekey: Wang2016361
 Degree: -

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Title: Materials and Design
  Other : Materials & Design
  Abbreviation : Mater. Des.
Source Genre: Journal
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Publ. Info: Reigate, Surrey, Eng. : Elsevier
Pages: - Volume / Issue: 109 Sequence Number: - Start / End Page: 361 - 366 Identifier: ISSN: 0264-1275
CoNE: /journals/resource/954926234428