Authors: Katz-Demyanetz, A.¹; Rosenson, H.¹; Koren, Z.¹; Regev, M.²

Source: Materials Science and Technology, Volume 25, Number 10, October 2009 , pp. 1227-1233(7)

Publisher: Maney Publishing

Abstract:

The influence of the cooling rate on 80Mg–15Cu–5Y was investigated. Four different cooling rates yielded different microstructures that were characterised by means of X-ray diffraction (XRD), SEM, high-resolution SEM, energy dispersive spectroscopy chemical analysis, TEM and high-resolution TEM. The different casting procedures were gravity castings of 3 mm diameter specimens into a copper mould held at different temperatures (cooled to −195°C with the aid of liquid nitrogen, held at room temperature and heated to 300°C) and melt spinning. Only the melt spun specimen yielded what appeared to be an amorphous XRD spectrum; however, a detailed TEM analysis showed that this specimen was characterised by a micro- or even nanocrystalline rather than amorphous structure.

Keywords: MELT SPINNING; MICROSTRUCTURE; METALLIC GLASS; PERMANENT MOULD CASTING; GRAVITY CASTING

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174328408X374658

Affiliations: 1: Israel Institute of Metals, Foundry Laboratory, Technion–Israel Institute of Technology 2: Ort Braude College of Engineering, Mechanical Engineering Department, P.O.B. 78, Karmiel, Israel

Publication date: 2009-10-01

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