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The influence of alloy composition on the as-cast grain structure in near net shape low-density steels
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Slater, Carl, Hollyhoke, Neil and Davis, Claire (2017) The influence of alloy composition on the as-cast grain structure in near net shape low-density steels. Ironmaking & Steelmaking . doi:10.1080/03019233.2017.1405180 (In Press)
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Official URL: http://dx.doi.org/10.1080/03019233.2017.1405180
Abstract
Low-density steels are considered an attractive potential replacement for conventional steel in industries such as the automotive sector. However, there are several issues that need to be overcome before they become commercially useful grades. A significant constraint is in their processability, for example, a large as-cast grain size means these steels are prone to hot cracking. This paper explores how compositional variations affect the as-cast grain size in 12 low-density steels cast at solidification rates representative of near net shape casting. It is shown that while mushy zone width is a good indicator of the cast grain size, using a mushy zone width from liquidus to 85% solidified fraction gives a better correlation. It was found that the as-cast grain size of a 7 wt-% Al steel can be reduced from 736 to 244 µm through the addition of 1.5 wt-% Si which acts to increase the mushy zone width by 19°C.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||||
Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||
Library of Congress Subject Headings (LCSH): | Steel alloys, Automobile industry and trade | ||||||
Journal or Publication Title: | Ironmaking & Steelmaking | ||||||
Publisher: | Maney Publishing | ||||||
ISSN: | 0301-9233 | ||||||
Official Date: | 26 November 2017 | ||||||
Dates: |
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Date of first compliant deposit: | 29 May 2019 | ||||||
DOI: | 10.1080/03019233.2017.1405180 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | In Press | ||||||
Access rights to Published version: | Open Access | ||||||
RIOXX Funder/Project Grant: |
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