Paper Title:
Substructure and Nanocrystalline Structure Effects in Thermomechanically Treated Ti-Ni Alloys
  Abstract

Substructure and structure formation as well as functional properties of thermomechanically treated Ti-Ni wire have been studied using differential scanning calorimetry, X-ray diffraction, transmission electron microscopy and mechanical. The low- temperature themomechanical treatment (LTMT) was carried out by rolling at room temperature in a true strain range e = 0.3 to 1.9. It was shown that severe plastic deformation (e=1.9) of Ti-50.0at.%Ni alloy results in partial amorphization and formation of nanocrystalline austenite structure during post-deformation annealings up to 400 °C. As a result, the fully recoverable strain and recovery stress become much higher than the values reachable after traditional LTMT (e=0.3 to 0.88) with post-deformation annealing which creates a poligonized dislocation substructure.

  Info
Periodical
Materials Science Forum (Volumes 503-504)
Edited by
Zenji Horita
Pages
597-602
DOI
10.4028/www.scientific.net/MSF.503-504.597
Citation
K.E. Inaekyan, S. Prokoshkin, V. Brailovski, I. Khmelevskaya, V. Demers, S. V. Dobatkin, E.V. Tatyanin, E. Bastarache, "Substructure and Nanocrystalline Structure Effects in Thermomechanically Treated Ti-Ni Alloys", Materials Science Forum, Vols. 503-504, pp. 597-602, 2006
Online since
January 2006
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