The University of Southampton
University of Southampton Institutional Repository

Using dilatometry to study martensitic stabilization and recrystallization kinetics in a severely deformed NiTi alloy

Using dilatometry to study martensitic stabilization and recrystallization kinetics in a severely deformed NiTi alloy
Using dilatometry to study martensitic stabilization and recrystallization kinetics in a severely deformed NiTi alloy
A martensitic NiTi alloy was separately processed by equal-channel angular pressing, repetitive corrugation and straightening by rolling and cold rolling. Measurements by dilatometry revealed a significant increase in the austenitic phase transformation temperature and martensitic stabilization after severe plastic deformation. The release of an excess volume upon recrystallization of the deformed NiTi alloy was measured using a high-precision difference-dilatometer employing non-isothermal and isothermal procedures. The kinetics of the recrystallization process was analyzed according to the Johnson–Mehl–Avrami–Kolmogorov theory and the average effective Avrami exponent was estimated as n ? 1. It is concluded that the recrystallization behavior is essentially similar for all three processing modes.
0022-2461
4003-4011
Shahmir, H.
9d330616-d35d-4db0-96e8-26195ae1c511
Nili-Ahmadabadi, Mahmoud
74c5b0be-a73e-40fe-bc6e-8450bc0eeaf7
Razzaghi, Alireza
a28bbe5f-dccf-43bc-9452-3273861e03e3
Mohammadi, Mahdi
9b39339a-255e-40a7-bf52-9043ab291e6b
Wang, Chuan Ting
80ad9adf-a9df-49ed-934d-fa64505b920d
Jung, Jai Myun
6ff124aa-278d-4a4c-b653-a94a3e1e2335
Kim, Hyoung Seop
762e00dc-3fa4-49ec-85d5-0f5bab01399b
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Shahmir, H.
9d330616-d35d-4db0-96e8-26195ae1c511
Nili-Ahmadabadi, Mahmoud
74c5b0be-a73e-40fe-bc6e-8450bc0eeaf7
Razzaghi, Alireza
a28bbe5f-dccf-43bc-9452-3273861e03e3
Mohammadi, Mahdi
9b39339a-255e-40a7-bf52-9043ab291e6b
Wang, Chuan Ting
80ad9adf-a9df-49ed-934d-fa64505b920d
Jung, Jai Myun
6ff124aa-278d-4a4c-b653-a94a3e1e2335
Kim, Hyoung Seop
762e00dc-3fa4-49ec-85d5-0f5bab01399b
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Shahmir, H., Nili-Ahmadabadi, Mahmoud, Razzaghi, Alireza, Mohammadi, Mahdi, Wang, Chuan Ting, Jung, Jai Myun, Kim, Hyoung Seop and Langdon, Terence G. (2015) Using dilatometry to study martensitic stabilization and recrystallization kinetics in a severely deformed NiTi alloy. Journal of Materials Science, 50 (11), 4003-4011. (doi:10.1007/s10853-015-8957-5).

Record type: Article

Abstract

A martensitic NiTi alloy was separately processed by equal-channel angular pressing, repetitive corrugation and straightening by rolling and cold rolling. Measurements by dilatometry revealed a significant increase in the austenitic phase transformation temperature and martensitic stabilization after severe plastic deformation. The release of an excess volume upon recrystallization of the deformed NiTi alloy was measured using a high-precision difference-dilatometer employing non-isothermal and isothermal procedures. The kinetics of the recrystallization process was analyzed according to the Johnson–Mehl–Avrami–Kolmogorov theory and the average effective Avrami exponent was estimated as n ? 1. It is concluded that the recrystallization behavior is essentially similar for all three processing modes.

This record has no associated files available for download.

More information

Published date: June 2015
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 382382
URI: http://eprints.soton.ac.uk/id/eprint/382382
ISSN: 0022-2461
PURE UUID: 638deb0c-5e95-4dff-8f4b-3742ae24695b
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 22 Oct 2015 15:34
Last modified: 15 Mar 2024 03:14

Export record

Altmetrics

Contributors

Author: H. Shahmir
Author: Mahmoud Nili-Ahmadabadi
Author: Alireza Razzaghi
Author: Mahdi Mohammadi
Author: Chuan Ting Wang
Author: Jai Myun Jung
Author: Hyoung Seop Kim

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×