NDLI: Effect of Ti Particle Size on the Reaction Kinetics and Densification of TiAl Intermetallics

Content Provider	Springer Nature Link
Author	Mishra, D. D. Makkar, P. Rath, P. K. Dabhade, V. V. Agarwala, V. Agarwala, R. C.
Copyright Year	2016
Abstract	The present investigation deals with response of the particle size of titanium on the reactive sintering of Ti–Al intermetallics and subsequently on their reaction kinetics and densification behavior. Titanium powders of the initial average particle size of 44 μm were milled for various durations in a planetary ball mill to produce average particle sizes of 100, 28 and 7 μm. These titanium powders of various particle sizes, i.e. 100, 28, and 7 μm were mixed with titanium powder of average particle size range of 40–44 μm in the ratio of 1:1 corresponding to the Ti–Al intermetallic composition. The reactive sintering temperatures of the mixtures were determined by DTA and the effect of change in Al particle size was determined for the activation energy of the self propagating reaction. The mixtures of Ti and Al blends of various Ti particle size were compacted and subsequently sintered at reaction sintering temperatures for 1 h in argon atmosphere. The porosity levels as well as the microstructure studies were carried out to determine the influence of the particle size of aluminium on the reactive sintering of Ti–Al. The compacts were further characterized by X-ray diffraction to determine the extent of phase formation.
Starting Page	175
Ending Page	185
Page Count	11
File Format	PDF
ISSN	09722815
Journal	Transactions of the Indian Institute of Metals
Volume Number	70
Issue Number	1
e-ISSN	09751645
Language	English
Publisher	Springer India
Publisher Date	2016-04-29
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aluminides Sintering Microstructure Metallic Materials Materials Science Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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