Authors: Jai Gautam Roumen Petrov Leo Kestens Elke Leunis
Publish Date: 2008/06/01
Volume: 43, Issue: 11, Pages: 3969-3975
Abstract
In this article an ultralowcarbon steel grade alloyed with Mn and Al has been investigated during α–γ–α transformation annealing in vacuum Typical texture and microstructure has evolved as a monolayer of grains on the outer surface of transformationannealed sheets This monolayer consists of 100//ND and 110//ND fibre which is very different from the bulk texture components The selective driving force is believed to reside in the anisotropy of surface energy at the metal–vapour interface The grain morphology is very different from the bulk grains Moreover 30–40 of the grain boundary interfaces observed in the RD–TD surface sections are tilt incoherent 110 705° boundaries which are known to exhibit reduced interface energy Hence the conclusion can be drawn that the orientation selection of surface grains is strongly controlled by minimization of the interface energy both metal/vapour and metal/metal interfaces play a roll in thisOpen AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License https//doiorg/creativecommonsorg/licenses/bync/20 which permits any noncommercial use distribution and reproduction in any medium provided the original authors and source are credited
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