The Library
A phase-field model investigating the role of elastic strain energy during the growth of closely spaced neighbouring interphase precipitates
Tools
Rahnama, Alireza, Clark, Samuel, Janik, Vit and Sridhar, Seetharaman (2018) A phase-field model investigating the role of elastic strain energy during the growth of closely spaced neighbouring interphase precipitates. Computational Materials Science, 142 . pp. 437-443. doi:10.1016/j.commatsci.2017.09.053 ISSN 0927-0256.
|
PDF
WRAP-phase-field-model-investigating-elastic-strain-Rahnama-2017.pdf - Accepted Version - Requires a PDF viewer. Download (3265Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.commatsci.2017.09.053
Abstract
A multi-phase field method is developed to investigate the effects of transformation strain on the transformation kinetics, thermodynamic stability and pairing of interphase precipitates in micro-alloyed steels. The model conserves homogeneity of stress in the diffuse interface between elastically inhomogeneous phases and provides an explanation of the mechanism resulting in the pairing of two adjacent interphase precipitates. Several scenarios of inhomogeneous elastic conditions have been considered. The simulations for a situation where only the interfacial energy is considered to contribute to the transformation show that this energy can lead to the establishment of a neck between two neighbouring precipitates. However, if sufficient time is given, one of the precipitates will completely dissolve into its neighbouring particle. On the other hand, when both strain and interfacial energies act on the system, the bridge between the particles becomes stabilised leading to the pairing of the particles. This is a result of the particles tendency to minimise the strain energy due to the excessive strain field generated by the neck between the two particles.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Library of Congress Subject Headings (LCSH): | Steel alloys, Austenite, Ferrite | ||||||||
Journal or Publication Title: | Computational Materials Science | ||||||||
Publisher: | Elsevier Science BV | ||||||||
ISSN: | 0927-0256 | ||||||||
Official Date: | 1 February 2018 | ||||||||
Dates: |
|
||||||||
Volume: | 142 | ||||||||
Page Range: | pp. 437-443 | ||||||||
DOI: | 10.1016/j.commatsci.2017.09.053 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 8 November 2017 | ||||||||
Date of first compliant Open Access: | 6 November 2018 | ||||||||
Funder: | Tata Steel, Engineering and Physical Sciences Research Council (EPSRC), Warwick Manufacturing Group, High Value Manufacturing Catapult | ||||||||
Grant number: | EP/L018632/1 (EPSRC) |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year