Metastable Defect Cluster Formation during Radiation-Induced Amorphization in NiTi

Seiichi Watanabe; Takuto Koike; Takanori Suda; Soumei Ohnuki; Heishichirou Takahashi; Nghi Q. Lam

doi:10.2320/matertrans.45.24

Seiichi Watanabe, Takuto Koike, Takanori Suda, Soumei Ohnuki, Heishichirou Takahashi, Nghi Q. Lam

著者情報

キーワード: radiation-induced amorphization, disordering, nickel-titanium, molecular dynamics, high-voltage electron microscopy

ジャーナルフリー

2004 年 45 巻 1 号 p. 24-28

DOI https://doi.org/10.2320/matertrans.45.24

詳細

抄録

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.

責任著者(Corresponding author)

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