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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 . pp. 1-6. doi:10.1080/03019233.2017.1405180 ISSN 0301-9233.
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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 > TA Engineering (General). Civil engineering (General) | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Library of Congress Subject Headings (LCSH): | Lightweight steel -- Industrial applications, Grain boundaries, Metal castings, Lightweight steel -- Cracking | ||||||||
| Journal or Publication Title: | Ironmaking & Steelmaking | ||||||||
| Publisher: | Maney Publishing | ||||||||
| ISSN: | 0301-9233 | ||||||||
| Official Date: | 26 November 2017 | ||||||||
| Dates: |
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| Page Range: | pp. 1-6 | ||||||||
| DOI: | 10.1080/03019233.2017.1405180 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Description: | ASRC - ASSURE2 |
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| Date of first compliant deposit: | 27 March 2018 | ||||||||
| Date of first compliant Open Access: | 27 March 2018 | ||||||||
| RIOXX Funder/Project Grant: |
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