Please use this identifier to cite or link to this item:
Title: Structures, properties and responses to heat treatment of melt-spun Cu - Y alloys
Authors: Li, Y. 
Ng, S.C. 
Tan, L.K.
Lu, D. 
Keywords: Heat treatment
Nanocrystalline alloys
Rapid solidification
Yttrium copper alloys
Issue Date: 22-Aug-1997
Citation: Li, Y.,Ng, S.C.,Tan, L.K.,Lu, D. (1997-08-22). Structures, properties and responses to heat treatment of melt-spun Cu - Y alloys. Journal of Alloys and Compounds 259 (1-2) : 276-282. ScholarBank@NUS Repository.
Abstract: Copper alloys containing up to 7 wt.% Y were prepared by chill-block melt-spinning into ribbons of thickness between 40 to 70 μm. The melt-spun ribbons were heat treated for 2 h at 200, 300, 400, 500, 600 and 800 °C respectively. The as-spun and heat treated ribbons were tested for microhardness and resistivity. The microstructures of these ribbons were investigated by optical and transmission electron microscopy and X-ray diffraction. Microstructures were of the typical Zone A/Zone B type for Cu - 3Y, Cu - 4Y and Cu - 7Y ribbons as-spun and of columnar cell type for Cu - 1Y ribbons as-spun. X-ray diffraction and TEM confirm that on the chill side of the ribbon there were nano-sized αCu with only a small amount of secondary phases. These nano-sized αCu were retained partially after heat treatment up to 600 °C for 2h for Cu - 3Y, Cu - 4Y and Cu - 7Y alloys. The secondary phases were identified by TEM and XRD as Cu4Y/Cu5Y. Both αCu and Cu4Y/Cu5Y coarsened as a result of heat treatment at 800 °C for 2 h for all the alloys. © 1997 Elsevier Science S.A. © 1997 Elsevier Science S.A.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Aug 4, 2022

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.