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Effect of thermo-mechanical processing on precipitate formation in next generation HSLA steel
journal contribution
posted on 2011-01-01, 00:00 authored by Subrata Mukherjee, Ilana Timokhina, C Zhu, S Ringer, Peter HodgsonPeter HodgsonDevelopment of advanced high strength steels (AHSS) using a conventional rolling setup is one of the biggest challenges to steel industry. It has been found that fine precipitation in a soft matrix, formed after hot rolling, can markedly improve the mechanical properties. In this work, three dimensional atom probe tomography (3D-APT) has been used to study the formation of precipitates in thermomechanically simulated steel. 3D-APT data reveals co-existence of numerous nano clusters with precipitates. Also, quantitative analysis of the nano clusters and precipitates shows clusters are as small as mm in size. Precipitates are found to be disc shaped with the composition of equilibrium precipitates (TiMo)C. Thus, 3D-APT is seen as an ideal technique to complement TEM to understand the nanoscale features in thermomechanically processed steel for further improvements in the mechanical properties of AHSS.
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Journal
Journal of iron and steel research internationalVolume
18Issue
1Pagination
478 - 481Publisher
Gangtie Yanjiu XuebaoLocation
[Beijing, China]ISSN
1006-706XLanguage
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2011, Gangtie Yanjiu XuebaoUsage metrics
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