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

被引：55

作者：

Sitepu, H

Schmahl, WW

Allafi, JK

Eggeler, G

Dlouhy, A

Toebbens, DM

Tovar, M

机构：

[1] Ruhr Univ Bochum, Inst Geol Mineral & Geophys, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Inst Werkstoffe, D-44780 Bochum, Germany

[3] Inst Phys Mat, Brno 61662, Czech Republic

[4] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

SCRIPTA MATERIALIA | 2002年 / 46卷 / 07期

关键词：

Ni-rich NiTi shape memory alloys; neutron diffraction; Rietveld method; transmission electron microscopy; electron diffraction; Ni4Ti3; precipitates;

D O I：

10.1016/S1359-6462(02)00032-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：543 / 548

页数：6

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