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Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation

H.R. Kotadia, A. Das, Amit Das Orcid Logo

Journal of Alloys and Compounds, Volume: 620, Pages: 1 - 4

Swansea University Author: Amit Das Orcid Logo

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DOI (Published version): 10.1016/j.jallcom.2014.09.089

Abstract

In this study, the effect of ultrasonic irradiation is investigated on the solidification microstructure of hypo- and hyper-eutectic Al–Si alloys. Significant grain refinement accompanying dendrite to equiaxed transition was observed for the primary solid in both the alloys. Analysis of cooling curv...

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Published in: Journal of Alloys and Compounds
ISSN: 0925-8388
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa21905
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first_indexed 2015-06-03T02:09:46Z
last_indexed 2018-05-14T12:56:13Z
id cronfa21905
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spelling 2018-05-14T10:28:30.0343123 v2 21905 2015-06-02 Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation 4d785df766daed9a857c934bb130ed8b 0000-0002-7196-6254 Amit Das Amit Das true false 2015-06-02 MTLS In this study, the effect of ultrasonic irradiation is investigated on the solidification microstructure of hypo- and hyper-eutectic Al–Si alloys. Significant grain refinement accompanying dendrite to equiaxed transition was observed for the primary solid in both the alloys. Analysis of cooling curves suggest that enhanced heterogeneous nucleation under ultrasonication is responsible for the refinement of the microstructure. In the region of the ultrasonic energy transfer, strong fluid flow effect resulted in predominant spheroidisation of the eutectic-Si plates. Journal Article Journal of Alloys and Compounds 620 1 4 0925-8388 25 1 2015 2015-01-25 10.1016/j.jallcom.2014.09.089 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2018-05-14T10:28:30.0343123 2015-06-02T13:13:49.1841337 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering H.R. Kotadia 1 A. Das 2 Amit Das 0000-0002-7196-6254 3
title Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
spellingShingle Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
Amit Das
title_short Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
title_full Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
title_fullStr Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
title_full_unstemmed Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
title_sort Modification of solidification microstructure in hypo- and hyper-eutectic Al–Si alloys under high-intensity ultrasonic irradiation
author_id_str_mv 4d785df766daed9a857c934bb130ed8b
author_id_fullname_str_mv 4d785df766daed9a857c934bb130ed8b_***_Amit Das
author Amit Das
author2 H.R. Kotadia
A. Das
Amit Das
format Journal article
container_title Journal of Alloys and Compounds
container_volume 620
container_start_page 1
publishDate 2015
institution Swansea University
issn 0925-8388
doi_str_mv 10.1016/j.jallcom.2014.09.089
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 0
active_str 0
description In this study, the effect of ultrasonic irradiation is investigated on the solidification microstructure of hypo- and hyper-eutectic Al–Si alloys. Significant grain refinement accompanying dendrite to equiaxed transition was observed for the primary solid in both the alloys. Analysis of cooling curves suggest that enhanced heterogeneous nucleation under ultrasonication is responsible for the refinement of the microstructure. In the region of the ultrasonic energy transfer, strong fluid flow effect resulted in predominant spheroidisation of the eutectic-Si plates.
published_date 2015-01-25T03:26:02Z
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score 11.035655

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