NDLI: Spray forming of bulk Al$_{85}$Y$_{8}$Ni$_{5}$Co$_{2}$ with co-existing amorphous, nano- and micro-crystalline structures

Content Provider	Springer Nature Link
Author	Srivastava, V. C. Surreddi, K. B. Scudino, S. Schowalter, M. Uhlenwinkel, V. Schulz, A. Rosenauer, A. Zoch, H. W. Eckert, J.
Copyright Year	2009
Abstract	A 12 mm thick Al$_{85}$Y$_{8}$Ni$_{5}$Co$_{2}$ plate was spray deposited on a 30 mm thick pre-heated copper substrate. The deposit was characterized using optical, high resolution scanning and transmission electron microscopy. Differential scanning calorimetry was performed to assess the crystallization behaviour of the deposit compared to melt spun ribbons of the same composition. The deposit shows an amorphous phase fraction of 83 and 56 vol.% (based on the total crystallization energy), in the bottom and top regions of the deposit. The deposit consists of amorphous and nanoscale structures along with microcrystalline intermetallic phases. The large amorphous phase fraction in the deposit is attributed to the chilling effect upon deposition of highly undercooled/partially crystallized droplets onto the pre-heated substrate and rapid heat extraction thereof due to bonding at the deposit/substrate interface.
Starting Page	331
Ending Page	335
Page Count	5
File Format	PDF
ISSN	09722815
Journal	Transactions of the Indian Institute of Metals
Volume Number	62
Issue Number	4-5
e-ISSN	09751645
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-06
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	spray deposition bulk nanocrystalline bulk amorphous Al alloys hardness test Tribology, Corrosion and Coatings Materials Science Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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