• Media type: E-Article; Text
  • Title: Cyclic degradation of titanium-tantalum high-temperature shape memory alloys - The role of dislocation activity and chemical decomposition
  • Contributor: Niendorf, T. [Author]; Krooß, P. [Author]; Somsen, C. [Author]; Rynko, R. [Author]; Paulsen, A. [Author]; Batyrshina, E. [Author]; Frenzel, J. [Author]; Eggeler, Gunther [Author]; Maier, Hans Jürgen [Author]
  • imprint: Singapore : World Scientific Publishing Co. Pte Ltd, 2015
  • Published in: Functional Materials Letters 8 (2015), Nr. 6
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/863; https://doi.org/10.1142/S1793604715500629
  • Keywords: Structural degradation ; Tantalum ; Alloys ; Titanium ; Thermo-mechanical loading ; training ; Chemical decomposition ; decomposition ; Grain boundaries ; High temperature ; Cyclic degradations ; ω-phase ; Elevated temperature ; Microstructure ; Shape memory effect ; High temperature shape memory alloy ; Dislocation activity ; phase transformation
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Titanium-tantalum shape memory alloys (SMAs) are promising candidates for actuator applications at elevated temperatures. They may even succeed in substituting ternary nickel-titanium high temperature SMAs, which are either extremely expensive or difficult to form. However, titanium-tantalum alloys show rapid functional and structural degradation under cyclic thermo-mechanical loading. The current work reveals that degradation is not only governed by the evolution of the ω-phase. Dislocation processes and chemical decomposition of the matrix at grain boundaries also play a major role. ; DFG/NI1327/3-1 ; DFG/MA1175/34-1 ; DFG/EG101/22-1 ; DFG/FR2675/3-1
  • Access State: Open Access
  • Rights information: Attribution (CC BY)