Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 615, Issue -, Pages 457-463Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.07.108
Keywords
Deformation mechanism; Bi-modal microstructure; Electron microscopy; Tensile ductility; Titanium alloys
Categories
Funding
- EU
- Free State Saxony (SAB) [13853/2379]
- European Centre for Emerging Materials and Processes Dresden (ECEMP)
- European Commission [264635]
Ask authors/readers for more resources
An important and effective strategy for ductility improvement of ultrafine-structured metallic materials is the development of multi-scale grain structures. Here we report about a new bi-modal Ti68.8Nb13.6Co6Cu5.1Al6.5 alloy with significantly improved tensile ductility and high static toughness. The alloy consists of an ultrafine-structured eutectic (B2 TiCo+bcc beta-Ti) and coarse bcc beta-Ti dendrites. The microstructure alteration upon tensile loading was studied in-situ by means of scanning electron microscopy. It is found that the ultrafine-structured eutectic exhibits a slip-like deformation behavior to accommodate the intensive plastic deformation of the dendrites. A detailed study of the microstructure by means of transmission electron microscopy revealed that this is due to a cube-on-cube orientation relationship of the eutectic (B2 TiCo+bcc beta-Ti) and dendritic (beta-Ti) phases. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
