Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite

In this study, the effect of Sc addition on the grain refinement, modification of the eutectic Si, mechanical and wear properties of A356 and A356–10 wt% TiB2in situ composite has been investigated. The A356–10 wt% TiB2 composites were prepared by an in situ reaction between K2TiF6 and KBF4 salts, w...

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Main Authors:	A. K., Prasada Rao, S. L., Pramod, B. S., Murty, Srinivasa R., Bakshi
Format:	Article
Language:	English
Published:	Elsevier 2015
Subjects:	TN Mining engineering. Metallurgy
Online Access:	http://umpir.ump.edu.my/id/eprint/9096/ http://umpir.ump.edu.my/id/eprint/9096/ http://umpir.ump.edu.my/id/eprint/9096/ http://umpir.ump.edu.my/id/eprint/9096/7/fkp-2015-pramod-Effect%20Of%20Sc.pdf

id	ump-9096
recordtype	eprints
spelling	ump-90962018-03-12T02:23:29Z http://umpir.ump.edu.my/id/eprint/9096/ Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite A. K., Prasada Rao S. L., Pramod B. S., Murty Srinivasa R., Bakshi TN Mining engineering. Metallurgy In this study, the effect of Sc addition on the grain refinement, modification of the eutectic Si, mechanical and wear properties of A356 and A356–10 wt% TiB2in situ composite has been investigated. The A356–10 wt% TiB2 composites were prepared by an in situ reaction between K2TiF6 and KBF4 salts, which are added in proper stoichiometric ratio to form TiB2 in the A356 alloy melt at a temperature of 1073 K (800 °C). Al–2 wt% Sc master alloy was added to A356 and A356–10 wt% TiB2 melt to introduce 0.2 and 0.4 wt% Sc in the alloy and the composite. Addition of Sc reduced the secondary dendrite arms spacing (SDAS) by 50% and changed the Si morphology from needle-like to fine spheroidal particles. Microstructure of Sc modified alloys which were cast for different holding times of 0, 30, 60 and 120 min indicated that there was no fading or poisoning effect on the SDAS and eutectic Si morphology. Hardness was found to increase due to addition of Sc and TiB2. Pin-on-disk wear tests indicated that Sc addition increase the wear resistance of A356 alloy but reduced the wear resistance of A356–TiB2 composite. Elsevier 2015 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9096/7/fkp-2015-pramod-Effect%20Of%20Sc.pdf A. K., Prasada Rao and S. L., Pramod and B. S., Murty and Srinivasa R., Bakshi (2015) Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite. Materials and Design, 78. pp. 85-94. ISSN 0261-3069 http://dx.doi.org/10.1016/j.matdes.2015.04.026 DOI: 10.1016/j.matdes.2015.04.026
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TN Mining engineering. Metallurgy
spellingShingle	TN Mining engineering. Metallurgy A. K., Prasada Rao S. L., Pramod B. S., Murty Srinivasa R., Bakshi Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite
description	In this study, the effect of Sc addition on the grain refinement, modification of the eutectic Si, mechanical and wear properties of A356 and A356–10 wt% TiB2in situ composite has been investigated. The A356–10 wt% TiB2 composites were prepared by an in situ reaction between K2TiF6 and KBF4 salts, which are added in proper stoichiometric ratio to form TiB2 in the A356 alloy melt at a temperature of 1073 K (800 °C). Al–2 wt% Sc master alloy was added to A356 and A356–10 wt% TiB2 melt to introduce 0.2 and 0.4 wt% Sc in the alloy and the composite. Addition of Sc reduced the secondary dendrite arms spacing (SDAS) by 50% and changed the Si morphology from needle-like to fine spheroidal particles. Microstructure of Sc modified alloys which were cast for different holding times of 0, 30, 60 and 120 min indicated that there was no fading or poisoning effect on the SDAS and eutectic Si morphology. Hardness was found to increase due to addition of Sc and TiB2. Pin-on-disk wear tests indicated that Sc addition increase the wear resistance of A356 alloy but reduced the wear resistance of A356–TiB2 composite.
format	Article
author	A. K., Prasada Rao S. L., Pramod B. S., Murty Srinivasa R., Bakshi
author_facet	A. K., Prasada Rao S. L., Pramod B. S., Murty Srinivasa R., Bakshi
author_sort	A. K., Prasada Rao
title	Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite
title_short	Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite
title_full	Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite
title_fullStr	Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite
title_full_unstemmed	Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite
title_sort	effect of sc addition on the microstructure and wear properties of a356 alloy and a356–tib2in situ composite
publisher	Elsevier
publishDate	2015
url	http://umpir.ump.edu.my/id/eprint/9096/ http://umpir.ump.edu.my/id/eprint/9096/ http://umpir.ump.edu.my/id/eprint/9096/ http://umpir.ump.edu.my/id/eprint/9096/7/fkp-2015-pramod-Effect%20Of%20Sc.pdf
first_indexed	2023-09-18T22:07:18Z
last_indexed	2023-09-18T22:07:18Z
_version_	1777414793611706368

Effect of Sc Addition on the Microstructure and Wear Properties of A356 Alloy and A356–TiB2in Situ Composite

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