MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Metastable Defect Cluster Formation during Radiation-Induced Amorphization in NiTi
Seiichi WatanabeTakuto KoikeTakanori SudaSoumei OhnukiHeishichirou TakahashiNghi Q. Lam
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2004 Volume 45 Issue 1 Pages 24-28

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Abstract

Chemical and topological disorderings in the NiTi intermetallic compound during electron irradiation were studied using a combination of in situ irradiation inside a high-resolution high-voltage electron microscope and image analyses of molecular-dynamics-simulated atom configurations. It was found that metastable defect clusters formed during the chemical-disordering phase prior to topological disordering leading to amorphization. These planar defect clusters contributed to the characteristic diffuse scattering were also observed in selected-area diffraction patterns.

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© 2004 The Japan Institute of Metals and Materials
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