Microstructure, crystallography, and shape memory effect in equiatomic NbRu

The microstructure and crystallography of equiatomic NbRu were examined by transmission electron microscopy (TEM) and electron diffraction. This alloy exhibits a highly twinned microstructure identical to that in the similar TaRu system. Electron diffraction demonstrates that, like TaRu, the room-te...

Full description

Saved in:
Bibliographic Details
Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 273; pp. 275 - 279
Main Authors Fonda, R.W, Jones, H.N
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.12.1999
Subjects
Crystallography
Equiatomic NbRu
High temperature shape memory effect
Microstructure
Shape memory effect
Microstructure
Equiatomic NbRu
Crystallography
Shape memory effect
High temperature shape memory effect
Online AccessGet full text

Cover

More Information
Summary:The microstructure and crystallography of equiatomic NbRu were examined by transmission electron microscopy (TEM) and electron diffraction. This alloy exhibits a highly twinned microstructure identical to that in the similar TaRu system. Electron diffraction demonstrates that, like TaRu, the room-temperature crystal structure of NbRu is not orthorhombic as had been previously reported, but is instead monoclinic. The transformation which forms this monoclinic structure produces a high concentration of antiphase domain boundaries and some δ-domain boundaries within the twinned microstructure. The shape memory effect in NbRu was demonstrated by reheating bent samples to above the high-temperature tetragonal-to-cubic transformation temperature and observing the decrease in bend angle. Initial tests demonstrate a strain recovery of 4% at the tensile surface.
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(99)00354-8