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Thermal stability and microstructure of Ni-Mn-Ga-Cu high temperature shape memory alloys

Autor
Santamarta, R.; Muntasell, J.; Font, J.; Cesari, E.
Tipus d'activitat
Article en revista
Revista
Journal of alloys and compounds
Data de publicació
2015-11-05
Volum
648
Pàgina inicial
903
Pàgina final
911
DOI
https://doi.org/10.1016/j.jallcom.2015.07.054 Obrir en finestra nova
URL
http://www.sciencedirect.com/science/article/pii/S0925838815304515 Obrir en finestra nova
Resum
The thermal stability and microstructure after ageing at 770 K for different times have been studied on six Ni-Mn-Ga-Cu polycrystalline high temperature shape memory alloys, in which Cu substituted Mn, Ga, or both simultaneously. Prior to ageing, those compositions with higher e/a ratio not only show higher martensitic transformation temperatures but also higher thermal hysteresis. The quaternary alloys that contain less Cu show the best thermal stability, almost independently from the element t...
Paraules clau
CRYSTAL-STRUCTURE, Metals and alloys, Microstructure, NI54MN25GA21, PHASE, Precipitation, Shape memory, Thermal analysis
Grup de recerca
GRPFM - Grup de Recerca en Propietats Físiques dels Materials

Participants

  • Santamarta Martinez, Ruben  (autor)
  • Muntasell Pla, Joaquim  (autor)
  • Font Ferrer, Joan  (autor)
  • Cesari, Eduard  (autor)