171 0

Partially-recrystallized, Nb-alloyed TWIP steels with a superior strength-ductility balance

Title
Partially-recrystallized, Nb-alloyed TWIP steels with a superior strength-ductility balance
Author
김진경
Keywords
Nb micro-alloying; TWIP steel; Mechanical properties; Recovery annealing
Issue Date
2018-01
Publisher
ELSEVIER SCIENCE SA
Citation
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v. 711, Page. 130-139
Abstract
We investigated the effect of Nb micro-alloying in the range of 0.01 to 0.1 wt% on the microstructures and mechanical properties of Fe17Mn0.6Cl.5Al (wt%) TWIP steel. EBSD analysis shows that the Nb addition retards recrystallization in both the hot-rolled steels and cold-rolled and annealed steels. The Nb addition in the cold rolled and annealed TWIP steel leads to an increase in yield strength. This phenomenon is due to a combined effect of precipitation hardening and a low degree of recrystallization. Recovery annealing of the cold-rolled TWIP steels at 650 degrees C results in a good combination of yield strength and ductility. The steels containing 0.01 wt % and 0.025 wt% of Nb show a superior combination of UTS x TE exceeding 40,000 MPa.% and yield strength higher than 800 MPa. The design of TWIP steels utilizing both precipitation hardening and partial re crystallization opens a way to develop steels with a superior combination of yield strength and ductility.
URI
https://www.sciencedirect.com/science/article/pii/S0921509317314612https://repository.hanyang.ac.kr/handle/20.500.11754/99205
ISSN
0921-5093; 1873-4936
DOI
10.1016/j.msea.2017.11.012
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