An in situ study of the martensitic transformation in shape memory alloys using photoemission electron microscopy

被引：5
|
作者：
Cai, M.
Langford, S. C.
Dickinson, J. T. [1 ]
Xiong, Gang
Droubay, T. C.
Joly, A. G.
Beck, K. M.
Hess, W. P.
机构：
[1] Washington State Univ, Dept Phys & Astron, Pullman, WA 99164 USA
[2] Pacific NW Natl Lab, Richland, WA 99352 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2007年 / 361卷 / 2-3期
关键词：
D O I：
10.1016/j.jnucmat.2006.12.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Thermally-induced martensitic phase transformations in polycrystalline CuZnAl and thin-film NiTiCu shape memory alloys were probed using photoemission electron microscopy (PEEM). Ultra-violet photoelectron spectroscopy shows a reversible change in the apparent work function during transformation, presumably due to the contrasting surface electronic structures of the martensite and austenite phases. In situ PEEM images provide information on the spatial distribution of these phases and the evolution of the surface microstructure during transformation. PEEM offers considerable potential for improving our understanding of martensitic transformations in shape memory alloys in real time. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：306 / 312
页数：7
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