The Open UniversitySkip to content
 

In situ observations of phase transformation during C-Mn-Al steel weld solidification

Zhang, X. F.; Terasaki, H. and Komizo, Y. (2013). In situ observations of phase transformation during C-Mn-Al steel weld solidification. Materials Science and Technology, 29(11) pp. 1363–1372.

DOI (Digital Object Identifier) Link: https://doi.org/10.1179/1743284713Y.0000000282
Google Scholar: Look up in Google Scholar

Abstract

In order to better understand the microstructural evolution in steel welds, in-situ experiments using time-resolved X-ray diffraction (TRXRD) and laser scanning confocal microscopy (LSCM) are performed and the phase transformations that occur during welding of C–Mn–Al steels are directly observed. Ferrite and austenite phases are identified and quantified in the fusion zone (FZ) using the real time TRXRD and LSCM data. The results show non-equilibrium peritectic transition during rapid cooling, in contrast to the equilibrium δ-ferrite solidification that occurs under slow cooling conditions. Austenite nucleates along δ-ferrite grain boundaries during the δ→γ transformation, whereas during the γ→α transformation, the microstructures change from Widmanstatten ferrite (WF) to intragranular bainitic ferrite in the rapidly and slowly cooled welds, respectively. Using these real time observations, important kinetic information about phase transformations during steel weld solidification can be determined.

Item Type: Journal Item
Copyright Holders: 2013 Institute of Materials, Minerals and Mining
ISSN: 1743-2847
Keywords: in-situ time-resolved X-ray diffraction; laser scanning confocal microscopy; welding; solidification; phase transformation
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 41907
Depositing User: Xinfang Zhang
Date Deposited: 11 Feb 2015 13:06
Last Modified: 04 Oct 2016 11:42
URI: http://oro.open.ac.uk/id/eprint/41907
Share this page:

Altmetrics

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU