BROWSE

Related Researcher

Author's Photo

Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application

ITEM VIEW & DOWNLOAD

Large deformation behavior of twin-induced plasticity steels under high-pressure torsion

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Large deformation behavior of twin-induced plasticity steels under high-pressure torsion
Author
Park. Byung HoUm, Ho YoungKim, Jung GiJeong, Hu YoungLee, SunghakKim, Hyoung Seop
Issue Date
2016-11
Publisher
KOREAN INST METALS MATERIALS
Citation
METALS AND MATERIALS INTERNATIONAL, v.22, no.6, pp.1003 - 1008
Abstract
A high-manganese twinning-induced plasticity (TWIP) steel is processed by high-pressure torsion (HPT) for up to 1 turn under 6 GPa pressure. The HPT-processed TWIP steels exhibit a homogeneous microstructure with a peak hardness of Hv 550. Deformation twinning is developed significantly in the early stage of the shear deformation, but is exhausted soon after 1/2 turn. The strength of the HPT-processed TWIP steel significantly increased due to the accumulation of dislocations, but elongation dramatically decreased due to a lack of dislocations available for plastic deformations. An analysis of the evolution of strength by imposed large strain under high pressure suggests that strain hardening due to dislocation and twinning is exhausted in the early stages of the HPT process. Further strategy for enhancing both strength and ductility is proposed.
URI
https://scholarworks.unist.ac.kr/handle/201301/20706
URL
http://link.springer.com/article/10.1007%2Fs12540-016-6279-z
DOI
10.1007/s12540-016-6279-z
ISSN
1598-9623
Appears in Collections:
UCRF_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

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

MENU