92 0

Micro-plasticity of medium Mn austenitic steel: Perfect dislocation plasticity and deformation twinning

Title
Micro-plasticity of medium Mn austenitic steel: Perfect dislocation plasticity and deformation twinning
Author
김진경
Keywords
Medium Mn steel; Nano-indentation; Micro-pillar; TWIP
Issue Date
2017-08
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ACTA MATERIALIA, v. 135, Page. 112-123
Abstract
The micro-scale plastic deformation behavior of an austenitic Fe-1.2%C-7.0%Mn (in wt%) steel was studied by means of nano-indentation and in situ compression of micro-pillars with selected crystallographic orientations. Transmission electron microscopy analysis reveals that the partial dislocation mediated twinning is preferred in a [001]-oriented single grain under compression. Twinning leads to large strain bursts during the nano-indentation and the micro-pillar compression. Perfect dislocation slip is the dominant deformation mechanism in a [111]-oriented single grain under compression. The observations offer strong support for the hypothesis that deformation twinning is a plasticity enhancing mechanism activated during the deformation of medium Mn steel. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S1359645417304871https://repository.hanyang.ac.kr/handle/20.500.11754/99252
ISSN
1359-6454; 1873-2453
DOI
10.1016/j.actamat.2017.06.014
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE