A method of producing very fine ferrite grains by means of hot forming

Citation
W. Bleck et al., A method of producing very fine ferrite grains by means of hot forming, STEEL RES, 72(10), 2001, pp. 406-411
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Metallurgy
Journal title
STEEL RESEARCH
ISSN journal
0177-4832 → ACNP
Volume
72
Issue
10
Year of publication
2001
Pages
406 - 411
Database
ISI
SICI code
0177-4832(200110)72:10<406:AMOPVF>2.0.ZU;2-8
Abstract
It is well known that refining the grain size of metals should lead to an i mprovement in the mechanical properties both of strength and of toughness. Therefore, a method has to be improved for the formation of very fine ferri te grains during hot rolling. By means of hot compression tests using an IF -type steel and a HSLA steel the effect of chemical composition, deformatio n temperature, strain and strain rate on the resulting ferrite grain size h as been investigated. By optimising the different process parameters during hot deformation, a ferrite grain of ASTM 15 can be produced. By means of t he Hall-Petch relationship an estimation of the influence of ferrite grain refinement on the mechanical properties can be given.