Enhancing tensile properties of Cu and Cu-Al alloys cryogenically processed by high pressure torsion

Author(s)
Kun Xia Wei, J. Horky, Wei Wei, M. J. Zehetbauer, D. Setman, E. Schafler, Jing Hu
Abstract

The influence of alloy concentration with different stacking fault energy (SFE) on tensile properties of Cu and Cu-Al alloys processed by high pressure torsion (HPT) at room temperature (RT) and liquid nitrogen temperature (LNT) was investigated. With decreasing SFE, the twinning capability, the dislocation density and grain refinement were enhanced at LNT, however, tensile strength and uniform elongation were not simultaneously improved. The enhanced tensile properties are explained in terms of the twinning capability, the grain size and the dislocation density independent of the short range order (SRO). (C) 2018 Elsevier B.V. All rights reserved.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Changzhou University
Journal
Journal of Alloys and Compounds
Volume
771
Pages
317-321
No. of pages
5
ISSN
0925-8388
DOI
https://doi.org/10.1016/j.jallcom.2018.08.247
Publication date
01-2019
Peer reviewed
Yes
Austrian Fields of Science 2012
Materials physics, Material sciences
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/enhancing-tensile-properties-of-cu-and-cual-alloys-cryogenically-processed-by-high-pressure-torsion(6839d2a7-b316-43f5-b5ba-9a8d86adec3d).html