Combined Synchrotron and Neutron Strcutural Refinement of R-Phase in Ti50.75.Ni47.75.Fe1.50 Shape Memory Alloy-Reference-Cited by-同舟云学术

Combined Synchrotron and Neutron Strcutural Refinement of R-Phase in Ti_50.75.Ni_47.75.Fe_1.50 Shape Memory Alloy

Published:2005-09 Issue: Volume:495-497 Page:255-260
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Sitepu H.¹,Wright J.P.,Hansen T.²,Chateigner Daniel³,Brokmeier Heinz Günter⁴,Ritter Clemens⁵,Ohba Takaomi⁶

Affiliation:

1. Institut Laue-Langevin (ILL)

2. Institut Max von Laue-Paul Langevin

3. Université de Caen Basse-Normandie

4. GKSS-Forschungszentrum Geesthacht GmbH

5. Institut Laue-Langevin

6. Aichi University of Education

Abstract

The crystal structure of R-phase in Ti50.75.Ni47.75.Fe1.50 shape memory alloy (SMA) has been studied at a temperature of (290 ± 7) K on cooling by combined synchrotron and neutron powder diffraction using Rietveld refinement with generalized spherical harmonic (GSH) description for preferred orientation (PO). The results showed that (i) no significant improvement in the crystallographic RWP-factor was found when the inversion center was removed from the 3 P model, suggesting that the space group was indeed 3 P and not lower symmetry 3 P neither m P31 and (ii) the refined atomic parameters were converging only when the 3 P space group was used in the refinement.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.495-497.255.pdf

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