Neutron diffraction phase analysis during thermal cycling of a Ni-rich NiTi shape memory alloy using the Rietveld method

Sitepu, H.; Schmahl, Wolfgang W.; Khalil-Allafi, Jafar; Eggeler, Gunther; Dlouhy, A.; Többens, D. M. und Tovar, M. (2002): Neutron diffraction phase analysis during thermal cycling of a Ni-rich NiTi shape memory alloy using the Rietveld method. In: Scripta Materialia, Bd. 46, Nr. 7: S. 543-548

Abstract

Martensitic transformations in an aged Ni-rich NiTi shape memory alloy are analysed using neutron diffraction and electron microscopy. The material shows a two step transformation on cooling from B2. After the first release of latent heat on cooling two martensitic phases (R-phase and B19(′)) are present. This is due to a heterogeneous microstructure after solution annealing and ageing.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Geowissenschaften > Department für Geo- und Umweltwissenschaften > Kristallographie und Materialwissenschaft
• Themengebiete: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
• Sprache: Englisch