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Chen BL, Wang W, Xie H, et al. Phase transformation of Cu-rich precipitates from 9R to 3R variant via ledges mechanism in ferritic steel containing copper. J Microsc. 2015;262(1):123-7doi: 10.1111/jmi.12352.
Chen, B. L., Wang, W., Xie, H., Ge, R. R., Zhang, Z. Y., Li, Z. W., Zhou, X. Y., & Zhou, B. X. (2016). Phase transformation of Cu-rich precipitates from 9R to 3R variant via ledges mechanism in ferritic steel containing copper. Journal of microscopy, 262(1), 123-7. https://doi.org/10.1111/jmi.12352
Chen, B L, et al. "Phase transformation of Cu-rich precipitates from 9R to 3R variant via ledges mechanism in ferritic steel containing copper." Journal of microscopy vol. 262,1 (2016): 123-7. doi: https://doi.org/10.1111/jmi.12352
Chen BL, Wang W, Xie H, Ge RR, Zhang ZY, Li ZW, Zhou XY, Zhou BX. Phase transformation of Cu-rich precipitates from 9R to 3R variant via ledges mechanism in ferritic steel containing copper. J Microsc. 2016 Apr;262(1):123-7. doi: 10.1111/jmi.12352. Epub 2015 Nov 24. PMID: 26599818.
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J Microsc. 2016 Apr;262(1):123-7. doi: 10.1111/jmi.12352. Epub 2015 Nov 24.

Phase transformation of Cu-rich precipitates from 9R to 3R variant via ledges mechanism in ferritic steel containing copper.

Journal of microscopy

B L Chen, W Wang, H Xie, R R Ge, Z Y Zhang, Z W Li, X Y Zhou, B X Zhou

Affiliations

  1. School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China.
  2. Institute of Materials, Shanghai University, Shanghai, People's Republic of China.

PMID: 26599818 DOI: 10.1111/jmi.12352

Abstract

Precipitates and solute enrich in aged ferritic steel containing copper were examined using high-resolution electron microscopy, high-angle annular dark-field scanning transmission electron microscopy and energy-dispersive X-ray spectroscopy. Two ledges with one-atom and two-atom layers height in the 9R/3R interface were observed. The enrichment of copper into two successive closed-packed planes with an interval of Fe-rich close-packed plane was detected. The passage of the Shockley partial, or the shearing, changes the stacking sequence of closed-packed planes. Finally, 9R Cu variant transformed into 3R Cu variant.

© 2015 The Authors Journal of Microscopy © 2015 Royal Microscopical Society.

Keywords: 3R structure; 9R structure; HRTEM; STEM; precipitation

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