Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 481, Issue -, Pages 114-118Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.02.150
Keywords
shape memory alloys; titanium nickelide; thermomechanical treatment; dislocation substructure; nanocrystalline structure; functional properties
Ask authors/readers for more resources
The substructure and structure formation as well as the mechanical and functional properties of thermomechanically treated Ti-50.7 at.%Ni and Ti-50.0 at.%Ni alloys were studied using transmission electron microscopy and mechanical testing. A low-temperature thermomechanical treatment is carried out by rolling at room temperature in a true strain range e = 0.3-1.9. It is shown that the severe plastic deformation of Ti-Ni alloys results in a partial material amorphization and in the subsequent formation of a nanocrystalline austenite structure during post-deformation annealing. As a result, the completely recoverable strain and recovery stress become much higher than the values reachable using traditional low-temperature thermomechanical treatment with post-deformation annealing which creates a polygonized dislocation substructure. (C) 2007 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