Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys

Present work focuses on understanding the solidification mechanism responsible for the grain-refinement in melt-conditioned direct chill (MC-DC) cast Al-alloy. It has been found that the melt-conditioning performed by stirring the liquid above the solidification front using a rotor–stator type melt-...

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Main Author:	A. K., Prasada Rao
Format:	Article
Language:	English
Published:	Taylor & Francis 2014
Subjects:	TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics
Online Access:	http://umpir.ump.edu.my/id/eprint/6249/ http://umpir.ump.edu.my/id/eprint/6249/ http://umpir.ump.edu.my/id/eprint/6249/ http://umpir.ump.edu.my/id/eprint/6249/1/fkp-2014-Prasada-Understanding_the_Evolution_abs_only.pdf

id	ump-6249
recordtype	eprints
spelling	ump-62492018-03-12T02:24:16Z http://umpir.ump.edu.my/id/eprint/6249/ Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys A. K., Prasada Rao TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics Present work focuses on understanding the solidification mechanism responsible for the grain-refinement in melt-conditioned direct chill (MC-DC) cast Al-alloy. It has been found that the melt-conditioning performed by stirring the liquid above the solidification front using a rotor–stator type melt-conditioning device, results in substantial fragmentation of dendrites due to forced convection and thermo-solutal distribution across the billet sump. Results also indicate that an isothermal region is created in the MC-DC regime of the billet sump, which further enhances the nucleation and restricts growth of the α-Al phase. The forced convection together with the solute transport lead to catastrophic dendrite fragmentation. Taylor & Francis 2014-07-07 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6249/1/fkp-2014-Prasada-Understanding_the_Evolution_abs_only.pdf A. K., Prasada Rao (2014) Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys. Materials and Manufacturing Processes, 29 (7). pp. 848-852. ISSN 1042-6914 http://dx.doi.org/10.1080/10426914.2014.921698 DOI: 10.1080/10426914.2014.921698
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics
spellingShingle	TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics A. K., Prasada Rao Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
description	Present work focuses on understanding the solidification mechanism responsible for the grain-refinement in melt-conditioned direct chill (MC-DC) cast Al-alloy. It has been found that the melt-conditioning performed by stirring the liquid above the solidification front using a rotor–stator type melt-conditioning device, results in substantial fragmentation of dendrites due to forced convection and thermo-solutal distribution across the billet sump. Results also indicate that an isothermal region is created in the MC-DC regime of the billet sump, which further enhances the nucleation and restricts growth of the α-Al phase. The forced convection together with the solute transport lead to catastrophic dendrite fragmentation.
format	Article
author	A. K., Prasada Rao
author_facet	A. K., Prasada Rao
author_sort	A. K., Prasada Rao
title	Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
title_short	Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
title_full	Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
title_fullStr	Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
title_full_unstemmed	Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
title_sort	understanding the evolution of the microstructure in melt-conditioned direct-chill cast al alloys
publisher	Taylor & Francis
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/6249/ http://umpir.ump.edu.my/id/eprint/6249/ http://umpir.ump.edu.my/id/eprint/6249/ http://umpir.ump.edu.my/id/eprint/6249/1/fkp-2014-Prasada-Understanding_the_Evolution_abs_only.pdf
first_indexed	2023-09-18T22:01:50Z
last_indexed	2023-09-18T22:01:50Z
_version_	1777414450459967488

Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys

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