Conversion times and energy/entropy barriers in isothermal/athermal martensites

► The same model gives athermal or isothermal regimes depending on parameters. ► A regime phase diagram in material parameters is explained in droplet picture. ► The isothermal C curves are drastically modified, by larger (and fewer) initial seeds. ► In the athermal regime, conversions can show dela...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2013-11, Vol.577, p.S66-S71
Main Authors: Shankaraiah, N., Murthy, K.P.N., Lookman, T., Shenoy, S.R.
Format: Article
Language:English
Subjects:
Alloys
Athermal
Classification
Computer simulation
Conversion
Delay
Entropy
Isothermal
Martensite
Martensites
Monte Carlo
Rectangles
Strain
TTT curves
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► The same model gives athermal or isothermal regimes depending on parameters. ► A regime phase diagram in material parameters is explained in droplet picture. ► The isothermal C curves are drastically modified, by larger (and fewer) initial seeds. ► In the athermal regime, conversions can show delay tails, as in experiment. ► Delay times show Vogel–Fulcher divergences from closing conversion pathways. We obtain insights into the athermal/isothermal martensite classification, and into puzzling delay times in athermal martensites, from Monte Carlo temperature-quench simulations of a discrete-strain pseudospin model for a square to rectangle transition.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2012.03.034