You are not logged in.

Equal-channel angular pressing and annealing of a twinning-induced plasticity steel : microstructure, texture, and mechanical properties

Haase, Christian, Kremer, Oliver, Hu, Weiping, Ingendahl, Tobias, Lapovok, Rimma and Molodov, Dmitri A. 2016, Equal-channel angular pressing and annealing of a twinning-induced plasticity steel : microstructure, texture, and mechanical properties, Acta materialia, vol. 107, pp. 239-253, doi: 10.1016/j.actamat.2016.01.056.

Attached Files
Name Description MIMEType Size Downloads

Title Equal-channel angular pressing and annealing of a twinning-induced plasticity steel : microstructure, texture, and mechanical properties
Author(s) Haase, Christian
Kremer, Oliver
Hu, Weiping
Ingendahl, Tobias
Lapovok, Rimma
Molodov, Dmitri A.
Journal name Acta materialia
Volume number 107
Start page 239
End page 253
Total pages 15
Publisher Pergamon Press
Place of publication Oxford, Eng.
Publication date 2016-04-01
ISSN 1359-6454
Keyword(s) TWIP steel
microstructure
ECAP
deformation twinning
texture
Summary In this work, a high-manganese Fe-23Mn-1.5Al-0.3C Twinning-Induced Plasticity (TWIP) steel was subjected to plastic shear deformation using Equal-Channel Angular Pressing (ECAP) at 300 °C following route BC and additional annealing. The microstructure evolution during both deformation by ECAP and subsequent annealing was investigated and correlated with the mechanical properties. The successive grain refinement during ECAP was promoted by two parallel mechanisms, namely dislocation driven grain fragmentation and twin fragmentation, and accounted for the ultra-high strength. In addition, due to the relatively low volume fraction of deformation twins after ECAP at 300 °C, further contribution of deformation twinning during room temperature deformation allowed additional work-hardening capacity and elongation. During subsequent recovery annealing the ultra-fine grains and deformation twins were thermally stable, which supported retainment of the high yield strength along with regained uniform elongation. For the first time, the texture evolution during ECAP and during the following heat treatment was analyzed. After 1, 2, and 4 ECAP passes a transition texture with the characteristic texture components of both high- and low-SFE materials developed. During the following heat treatment the texture evolution proceeded similar to that observed in the same material after cold rolling. Retaining of the ECAP texture components due to oriented nucleation at grain boundaries and triple junctions as well as annealing twinning accounted for the formation of a weak, retained ECAP texture after recrystallization.
Language eng
DOI 10.1016/j.actamat.2016.01.056
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0913 Mechanical Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Acta Materialia
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083987

Document type: Journal Article
Collection: Institute for Frontier Materials
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 12 times in TR Web of Science
Scopus Citation Count Cited 19 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 81 Abstract Views, 2 File Downloads  -  Detailed Statistics
Created: Tue, 07 Jun 2016, 11:36:12 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.