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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12912
Title: Microstructural development and room-temperature thermal stability of mechanically alloyed Al 87Y 10Ni 3 nanostructure
Authors: Mula, Suhrit
Ghosh S.
Pabi S.K.
Published in: Advanced Science Letters
Abstract: Nanostructured phase formation in the elemental powder blends of nominal composition Al 87Y 10Ni 3 during mechanical alloying (MA) was investigated by X-ray diffraction and transmission electron microscopy. Almost fully amorphous phase formed in Al 87Y 10Ni 3 after prolonged (70 h) milling, in comparison to the complete amorphous phase formation by rapid solidification processing (RSP) of the same composition [A. Inoue, Prog. Mater. Sci. 43 365 (1998)]. The powder samples, which were milled for different length of time, were aged in a high purity inert atmosphere at room temperature (~ 28 °C) for 180 days. Comparison of the X-ray diffraction data of the milled and aged samples of Al 87Y 10Ni 3, and milled samples of a fully amorphous phase forming composition (Al 87Ni 6Ti 6) indicated that the extent of variation of lattice parameter of the Al-rich solid solutions in course of MA played a vital role in the amorphous phase formation by MA. The nearly amorphous phase in Al 87Y 10Ni 3 alloy produced by MA in the present investigation showed poor rack-life and thermal stability apparently due to the presence of fcc-Al particles in the nearly amorphous structure. © 2012 American Scientific Publishers. All rights reserved.
Citation: Advanced Science Letters (2012), 16(1): 362-367
URI: https://doi.org/10.1166/asl.2012.3285
http://repository.iitr.ac.in/handle/123456789/12912
Issue Date: 2012
Keywords: Amorphization
Electron microscopy
Nanostructure
Rack-life
X-ray diffraction
ISSN: 19366612
Author Scopus IDs: 12783902100
35513324800
7003438029
Author Affiliations: Mula, S., Department of Materials Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769008, India, Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, India
Ghosh, S., Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, India
Pabi, S.K., Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721302, India
Corresponding Author: Mula, S.; Department of Materials Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769008, India
Appears in Collections:Journal Publications [MT]

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