The Open UniversitySkip to content
 

Influence of κ-carbide interface structure on the formability of lightweight steels

Lu, W.J. and Qin, R.S. (2016). Influence of κ-carbide interface structure on the formability of lightweight steels. Materials & Design, 104 pp. 211–216.

Full text available as:
[img]
Preview
PDF (Accepted Manuscript) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (736kB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.matdes.2016.05.021
Google Scholar: Look up in Google Scholar

Abstract

κ-carbide (κ) in high aluminium (Al) steels is grown from austenite (γ) via γ → γ + κ or γ → α + κ (α represents ferrite), and is a lamellar structure. This work demonstrates that the formability of high Al lightweight steels is affected by the lattice misfit and interface shape between κ and matrix. The cold workability can be improved by either to change the steel chemical constitution or to implement an electro-thermo-mechanical process. For ferrite-matrix-based high Al steel, electric-current promotes the spheroidization and refinement of κ structure and reduces volume fraction of κ phase. This retards the crack nucleation and propagation, and hence improves the materials formability. The observation is caused by a direct effect of electric-current rather than side effects.

Item Type: Journal Item
Copyright Holders: 2016 Elsevier
ISSN: 0261-3069
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetEP/J011460/2EPSRC
Not SetEP/L00030X/1EPSRC
Not SetNA150320The Royal Society Newton Advanced Fellowship
Keywords: cracking; microstructure; κ-carbide; lightweight steel
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 46243
Depositing User: Rongshan Qin
Date Deposited: 10 May 2016 10:42
Last Modified: 01 Aug 2017 01:44
URI: http://oro.open.ac.uk/id/eprint/46243
Share this page:

Altmetrics

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU