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Martensite–austenite transformation kinetics of high Cr ferritic heat-resistant steel

  • Qiujia Ma , Yi Shao , Yongchang Liu , Zhiming Gao and Liming Yu
Published/Copyright: October 18, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 104 Issue 10

Abstract

The isochronal transformation behavior from martensite (α′) to austenite (γ) of modified high Cr ferritic heat-resistant steel was analyzed using the kinetic information extracted from differential thermal analysis results. The thus obtained α′→γ transformation kinetic process has been described by a JMAK-like model including three overlapping processes: site saturation nucleation, diffusion-controlled growth, and impingement correction for random distribution of nuclei. It is found that both the diffusion of alloying components and the inhibition of carbide precipitates strongly affect the α′→γ transformation kinetic processes. The α′→γ transformation (at relatively low heating rates) is of diffusion-controlled nature, and the obstruction of carbides during the migration of the α′/γ interface leads to a decrease in the pre-exponential factor of diffusion coefficient.

Keywords:: Kinetics; Phase transformation; Martensite; Austenite
* Correspondence address, Prof. Yongchang Liu, School of Materials Science & Engineering, Tianjin University, Tianjin 300072, P. R. China, Tel.: +86-22-87401873, Fax: +86-22-87401873, E-mail:

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Received: 2012-11-17
Accepted: 2013-3-26
Published Online: 2013-10-18
Published in Print: 2013-10-10

© 2013, Carl Hanser Verlag, München

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  2. Contents
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  4. Martensite–austenite transformation kinetics of high Cr ferritic heat-resistant steel
  5. Ageing texture of hot rolled and solution treated Ti–Nb alloys
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  10. Evaluation of the sliding performance of polyamide, poly-oxy-methylene and their composites
  11. Corrosion behaviour of AISI 204Cu and AISI 304 stainless steels in simulated pore solution
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  13. Electrochemical investigation of the effect of different laser surface treatments on Hastelloy G alloy
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  15. Cu2SnS3 absorber thin films prepared via successive ionic layer adsorption and reaction method
  16. Nano preparation of Dy3+ substituted ceria via urea-formaldehyde gel combustion route
  17. Short Communications
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  20. People
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https://doi.org/10.3139/146.110951
Keywords for this article
Kinetics; Phase transformation; Martensite; Austenite

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Martensite–austenite transformation kinetics of high Cr ferritic heat-resistant steel
  5. Ageing texture of hot rolled and solution treated Ti–Nb alloys
  6. Artificial aging of thixocast ZA27 alloy and particulate ZA27/SiCp composites
  7. Low cycle fatigue behavior under asymmetric loading of two AZ31B magnesium alloys with different microstructures and textures
  8. Mechanical properties of aluminum extruded via the KOBO method with direct and lateral outflow
  9. Hot compression deformation of an Mg–2.54Nd–0.26Zn–0.32Zr alloy
  10. Evaluation of the sliding performance of polyamide, poly-oxy-methylene and their composites
  11. Corrosion behaviour of AISI 204Cu and AISI 304 stainless steels in simulated pore solution
  12. Comparing the corrosion behavior of nanograined and coarse-grained interstitial free steels
  13. Electrochemical investigation of the effect of different laser surface treatments on Hastelloy G alloy
  14. Influence of sputtering gas pressure on properties of transparent conducting Si-doped zinc oxide films
  15. Cu2SnS3 absorber thin films prepared via successive ionic layer adsorption and reaction method
  16. Nano preparation of Dy3+ substituted ceria via urea-formaldehyde gel combustion route
  17. Short Communications
  18. Preparation of ZrB2-based nanocomposites with limited grain growth by means of low-temperature hot-pressing using Cu additive
  19. Combustion synthesis of Ti2SC
  20. People
  21. Prof. Dr. Tomaž Kosmač
  22. DGM News
  23. DGM News
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