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Preparation of Diversified Ultra‐Fine Microstructures in Q345 Steel with Improved Properties
Author(s) -
Yao Shengjie,
Du Linxiu,
Wang Guodong
Publication year - 2011
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201000271
Subject(s) - materials science , pearlite , metallurgy , ferrite (magnet) , microstructure , acicular ferrite , hardening (computing) , composite material , bainite , martensite , austenite , layer (electronics)
A typical C‐Mn steel (Q345) with warm‐rolled ferrite/pearlite was used for subsequent simple process resulting in ultrafine ferrite grains in size of ∼1µm. No remarkable strain hardening was detected and grain boundary motion was also recognized as an important accompanying deformation mechanisms at the beginning of yielding. However, strain‐hardening capability of this C‐Mn steel could be improved by changing the ultrafine ferrite/pearlite into acicular ferrite with increment of strength.