Title:
|
Functional fatigue recovery of superelastic cycled NiTi wires based on near 100ºC aging treatments
|
Author:
|
Isalgué Buxeda, Antonio; Soul, Hugo; Yawny, Alejandro; Auguet Sangrá, Carlota E.
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament de Física; Universitat Politècnica de Catalunya. AIEM - Arquitectura, energia i medi ambient; Universitat Politècnica de Catalunya. BIOCOM-SC - Grup de Biologia Computacional i Sistemes Complexos |
Abstract:
|
Functional fatigue affecting superelastic
behaviour of NiTi wires includes an accumulation of residual
strain and an uneven decrement of transformation stress on
cycling. Although this evolution is observed to diminish
asymptotically, it represents an important loss in the
maximum recoverable strain level and in the hysteretic
dissipative capacity. In this work, the effect of moderate
temperature aging treatment on the functionally degraded
material properties was studied with two experimental
setups. Wire samples of 0.5 and 2.46 mm diameter were
subjected to different cycling programs intercalated by
aging treatments of different durations up to 48 h at
100ºC. Results show that important levels of recovery on
the residual strains and the transformation stresses were
attained after the aging treatments. The analysis indicates
that the characteristic of the recovered cycle are rather
independent from the treatment duration and from the reached
condition before each treatment |
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria dels materials -Ni-Ti based alloys
functional properties
fatigue -Aliatges -Níquel-titani -- Aliatges |
Rights:
|
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
|
Article - Published version Conference Object |
Share:
|
|