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An Interpretation on Kinetics of Martensitic Transformation

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Abstract:

We have investigated athermal and isothermal martensitic transformations (typical displacive transformations) in Fe–Ni, Fe–Ni–Cr, and Ni-Co-Mn-In alloys under magnetic fields and hydrostatic pressures in order to understand the time-dependent nature of martensitic transformation, that is, the kinetics of martensitic transformation. We have confirmed that the two transformation processes are closely related to each other, that is, the athermal process changes to the isothermal process and the isothermal process changes to the athermal one under a hydrostatic pressure or a magnetic field. These findings can be explained by the phenomenological theory, which gives a unified explanation for the two transformation processes previously proposed by our group.

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Periodical:

Solid State Phenomena (Volumes 172-174)

Pages:

90-98

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.172-174.90

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Online since:

June 2011

Authors:

Tomoyuki Kakeshita, Takashi Fukuda, Yong-Hee Lee

Keywords:

Athermal Transformation, Incubation Time, Isothermal Transformation

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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