Effect of cooling rate on phase transformations in a high-strength low-alloy steel studied from the liquid phase

Dorin, Thomas, Stanford, Nicole, Taylor, Adam and Hodgson, Peter 2015, Effect of cooling rate on phase transformations in a high-strength low-alloy steel studied from the liquid phase, Metallurgical and materials transactions a: physical metallurgy and materials science, vol. 46a, pp. 5561-5571, doi: 10.1007/s11661-015-3173-0.

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Title Effect of cooling rate on phase transformations in a high-strength low-alloy steel studied from the liquid phase
Author(s) Dorin, Thomas
Stanford, Nicole
Taylor, Adam
Hodgson, Peter
Journal name Metallurgical and materials transactions a: physical metallurgy and materials science
Volume number 46a
Start page 5561
End page 5571
Total pages 11
Publisher Springer
Place of publication New York, N.Y.
Publication date 2015-09-30
ISSN 1073-5623
1543-1940
Summary The phase transformation and precipitation in a high-strength low-alloy steel have been studied over a large range of cooling rates, and a continuous cooling transformation (CCT) diagram has been produced. These experiments are unique because the measurements were made from samples cooled directly from the melt, rather than in homogenized and re-heated billets. The purpose of this experimental design was to examine conditions pertinent to direct strip casting. At the highest cooling rates which simulate strip casting, the microstructure was fully bainitic with small regions of pearlite. At lower cooling rates, the fraction of polygonal ferrite increased and the pearlite regions became larger. The CCT diagram and the microstructural analysis showed that the precipitation of NbC is suppressed at high cooling rates, and is likely to be incomplete at intermediate cooling rates.
Language eng
DOI 10.1007/s11661-015-3173-0
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0306 Physical Chemistry (Incl. Structural)
0913 Mechanical Engineering
020499 Condensed Matter Physics not elsewhere classified
Socio Economic Objective 861203 Metal Castings
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30079873

Document type: Journal Article
Collection: Institute for Frontier Materials
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