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Nanocrystallization of the Fdm Ti2Ni-Type Phase in Hf-Based Metallic Glasses

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Abstract:

Three ternary and four quaternary hafnium-based alloys have been rapidly solidified, and the devitrification of the resultant metallic glasses has been studied to evaluate the influence of composition on the products. The formation of metastable and stable Fdm (Pearson symbol cF96) Ti2Ni was evident whenever the alloy composition in the stable equilibrium diagrams showed this phase. The replacement of nickel by iron led to the appearance of this phase in preference to the icosahedral quasicrystal. Several common features of the amorphous alloys that form either nanoscale icosahedral or cF96 Ti2Ni-type phases on devitrification are discussed and summarized.

Keywords: DEVITRIFICATION; METALLIC GLASS; METASTABLE PHASE; RAPID SOLIDIFICATION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2001.033

Affiliations: 1: Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577, Japan 2: Department of Metallurgy, Indian Institute of Science, Bangalore 560012, India

Publication date: June 1, 2001

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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