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Control of intermetallic nano-particles through annealing in duplex low density steel
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Rahnama, Alireza, Spooner, Stephen and Seetharaman, Sridhar (2017) Control of intermetallic nano-particles through annealing in duplex low density steel. Materials Letters, 189 . pp. 13-16. ISSN 0167-577X.
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Official URL: http://www.journals.elsevier.com/materials-letters
Abstract
In high Al-low-density steels for future vehicle light weighting, it is vital to design a thermal profile to form and retain the uniformly dispersed nanosize B2-type intermetallic precipitates that are crucial for the material strength. In this paper, the influence of heating rate, during annealing to 1050◦C was simulated in a Au-image furnace. The post annealing structure was then characterized and two different morphologies of B2 particles were observed: triangle-like with a few micrometres and disk-like precipitates with a diameter of around a few hundred nanometres. It was found that a slower heating rate (2.5 ◦C/s) led to an increase in the volume fraction and to uniform distribution of particles within the microstructure and considerably affected the shape and size of the precipitates.
Item Type: | Journal Article | ||||||||||
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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 -- Heat treatment, Steel -- Mechanical properties, Intermetallic compounds | ||||||||||
Journal or Publication Title: | Materials Letters | ||||||||||
Publisher: | Elsevier BV | ||||||||||
ISSN: | 0167-577X | ||||||||||
Official Date: | 15 February 2017 | ||||||||||
Dates: |
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Volume: | 189 | ||||||||||
Page Range: | pp. 13-16 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 15 November 2016 | ||||||||||
Date of first compliant Open Access: | 11 November 2017 | ||||||||||
Funder: | High Value Manufacturing Catapult | ||||||||||
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