• Medientyp: E-Artikel; Sonstige Veröffentlichung
  • Titel: Cyclic degradation of titanium-tantalum high-temperature shape memory alloys - The role of dislocation activity and chemical decomposition
  • Beteiligte: Niendorf, T. [VerfasserIn]; Krooß, P. [VerfasserIn]; Somsen, C. [VerfasserIn]; Rynko, R. [VerfasserIn]; Paulsen, A. [VerfasserIn]; Batyrshina, E. [VerfasserIn]; Frenzel, J. [VerfasserIn]; Eggeler, Gunther [VerfasserIn]; Maier, Hans Jürgen [VerfasserIn]
  • Erschienen: Singapore : World Scientific Publishing Co. Pte Ltd, 2015
  • Erschienen in: Functional Materials Letters 8 (2015), Nr. 6
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/863; https://doi.org/10.1142/S1793604715500629
  • Schlagwörter: Elevated temperature ; Grain boundaries ; decomposition ; Alloys ; phase transformation ; ω-phase ; Dislocation activity ; Microstructure ; training ; Titanium ; High temperature ; High temperature shape memory alloy ; Structural degradation ; Thermo-mechanical loading ; Tantalum ; Shape memory effect ; Cyclic degradations ; Chemical decomposition
  • Beschreibung: 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
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  • Zugangsstatus: Freier Zugang
  • Rechte-/Nutzungshinweise: Namensnennung (CC BY)