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Journal of Materials Engineering and Performance

Erschienen in:

01.12.2014

The Effects of Cooling Mode on Precipitation and Mechanical Properties of a Ti-Nb Microalloyed Steel

verfasst von: Zhangwei Hu, Guang Xu, Hailin Yang, Chen Zhang, Ru Yu

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 12/2014

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Abstract

Laboratory experiments of a high-strength Ti-Nb microalloyed steel were conducted with two cooling modes, i.e., a large (35 °C s⁻¹) cooling rate in the initial stage followed by slow (8.5 °C s⁻¹) cooling rate (termed as FFC) and a slow (8.5 °C s⁻¹) cooling rate in the initial stage followed by large (35 °C s⁻¹) cooling rate (LFC) during cooling process. Based on the results of laboratory experiments, an industrial trial was performed with similar steel on a continuous hot strip production mill. The grain size in LFC sample (2.83 μm) is smaller than that in FFC sample (3.80 μm), and the volume fraction of precipitates in LFC sample (1.04%) is more than that in FFC sample (0.81%). Both results of laboratory experiments and industrial tests confirm that the strengthening effect of the LFC mode is much better than that of the FFC mode from the viewpoints of both fine-grain strengthening and precipitation strengthening. The present study provides a new approach to improve the property of microalloyed steels produced by continuous hot rolling technology.

Vorheriger Artikel Phenomena Discovered During Immersion of Steel Parts into Liquid Quenchants (Overview)

Nächster Artikel Effect of Temperature and Chloride Ion Concentration on Corrosion of Passive Films on Nano/Ultrafine Grained Stainless Steels

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Titel: The Effects of Cooling Mode on Precipitation and Mechanical Properties of a Ti-Nb Microalloyed Steel
verfasst von: Zhangwei Hu
Guang Xu
Hailin Yang
Chen Zhang
Ru Yu
Publikationsdatum: 01.12.2014
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 12/2014
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-014-1192-4

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