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Metals 2018, 8(9), 694; https://doi.org/10.3390/met8090694

Effect of Microstructure on Post-Rolling Induction Treatment in a Low C Ti-Mo Microalloyed Steel

1
CEIT, Materials and Manufacturing Division, 20018 San Sebastian, Basque Country, Spain
2
Universidad de Navarra, Tecnun, Mechanical and Materials Engineering Department, 20018 San Sebastian, Basque Country, Spain
*
Author to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 30 August 2018 / Accepted: 1 September 2018 / Published: 4 September 2018
(This article belongs to the Special Issue Advances in Microalloyed Steels)
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Abstract

Cost-effective advanced design concepts are becoming more common in the production of thick plates in order to meet demanding market requirements. Accordingly, precipitation strengthening mechanisms are extensively employed in thin strip products, because they enhance the final properties by using a coiling optimization strategy. Nevertheless, and specifically for thick plate production, the formation of effective precipitation during continuous cooling after hot rolling is more challenging. With the aim of gaining further knowledge about this strengthening mechanism, plate hot rolling conditions were reproduced in low carbon Ti-Mo microalloyed steel through laboratory simulation tests to generate different hot-rolled microstructures. Subsequently, a rapid heating process was applied in order to simulate induction heat treatment conditions. The results indicated that the nature of the matrix microstructure (i.e., ferrite, bainite) affects the achieved precipitation hardening, while the balance between strength and toughness depends on the hot-rolled microstructure. View Full-Text
Keywords: plate rolling; strengthening; precipitation; induction; titanium; molybdenum; microalloyed steels; EBSD; mechanical properties plate rolling; strengthening; precipitation; induction; titanium; molybdenum; microalloyed steels; EBSD; mechanical properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Larzabal, G.; Isasti, N.; Rodriguez-Ibabe, J.M.; Uranga, P. Effect of Microstructure on Post-Rolling Induction Treatment in a Low C Ti-Mo Microalloyed Steel. Metals 2018, 8, 694.

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