Phenomenological Study of the Size Effect on Martensitic Transformation in Nanograined Powders

Abstract:

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On the basis of the Landau-Ginzburg models established by Falk and other authors, a new model for martensitic transformation in nanograined powder is developed, in which the influence of the interface on martensitic transformation in nanograined powder is considered. The interface strain coefficient K, the factor describing the difference of the strain between the interface and the core of a nano-grain, was suggested in this paper. The equation in the present model was solved numerically, and the size effect was observed. The calculation results show that the critical size increases with the drop in temperature, which means that the lower temperature will promote martensitic transformation in nanograined materials.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

2151-2154

DOI:

10.4028/www.scientific.net/KEM.353-358.2151

Citation:

H. B. Wang and X. C. Wu, "Phenomenological Study of the Size Effect on Martensitic Transformation in Nanograined Powders", Key Engineering Materials, Vols. 353-358, pp. 2151-2154, 2007

Online since:

September 2007

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$35.00

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