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Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy

M.H. Khan, Amit Das Orcid Logo, Z. Li, H.R. Kotadia

Intermetallics, Volume: 132, Start page: 107132

Swansea University Author: Amit Das Orcid Logo

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DOI (Published version): 10.1016/j.intermet.2021.107132

Abstract

The solidification microstructures formed in a model 6082 alloy with 0.2–1.0 wt % Fe were examined under different cooling rates and the effects of 0.5 wt % Mn and Al–5Ti–1B grain refiner addition investigated. The results were compared against Thermo-Calc, differential scanning calorimetry (DSC) an...

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Published in: Intermetallics
ISSN: 0966-9795
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56233
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first_indexed 2021-02-11T11:07:10Z
last_indexed 2021-03-03T04:21:21Z
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spelling 2021-03-02T12:44:11.1593209 v2 56233 2021-02-11 Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy 4d785df766daed9a857c934bb130ed8b 0000-0002-7196-6254 Amit Das Amit Das true false 2021-02-11 MTLS The solidification microstructures formed in a model 6082 alloy with 0.2–1.0 wt % Fe were examined under different cooling rates and the effects of 0.5 wt % Mn and Al–5Ti–1B grain refiner addition investigated. The results were compared against Thermo-Calc, differential scanning calorimetry (DSC) and cooling curve analysis. Fe promotes primary-Al grain refinement from growth restriction and constitutional undercooling effects but increases detrimental β–(Al9Fe2Si2) intermetallic. Mn contributes to primary-Al grain refinement from growth restriction and promotes the formation of α–Al15(Fe,Mn)3Si2 at the expense of increased intermetallic content. Al–5Ti–1B inoculation not only produces the strongest refinement of primary-Al grains but also refines the Fe-intermetallics by enhancing their nucleation and restricting their growth volume in the interdendritic liquid pockets. Journal Article Intermetallics 132 107132 Elsevier BV 0966-9795 Aluminium alloys, Iron intermetallics, Solidification, Microstructure modification, Grain refinement 1 5 2021 2021-05-01 10.1016/j.intermet.2021.107132 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-03-02T12:44:11.1593209 2021-02-11T11:05:55.5591686 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering M.H. Khan 1 Amit Das 0000-0002-7196-6254 2 Z. Li 3 H.R. Kotadia 4 56233__19268__fc76c0acd6564823bd8d95a5b7e43f95.pdf 56233.pdf 2021-02-11T12:03:03.0434988 Output 1837038 application/pdf Accepted Manuscript true 2022-02-08T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
spellingShingle Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
Amit Das
title_short Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
title_full Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
title_fullStr Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
title_full_unstemmed Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
title_sort Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy
author_id_str_mv 4d785df766daed9a857c934bb130ed8b
author_id_fullname_str_mv 4d785df766daed9a857c934bb130ed8b_***_Amit Das
author Amit Das
author2 M.H. Khan
Amit Das
Z. Li
H.R. Kotadia
format Journal article
container_title Intermetallics
container_volume 132
container_start_page 107132
publishDate 2021
institution Swansea University
issn 0966-9795
doi_str_mv 10.1016/j.intermet.2021.107132
publisher Elsevier BV
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 1
active_str 0
description The solidification microstructures formed in a model 6082 alloy with 0.2–1.0 wt % Fe were examined under different cooling rates and the effects of 0.5 wt % Mn and Al–5Ti–1B grain refiner addition investigated. The results were compared against Thermo-Calc, differential scanning calorimetry (DSC) and cooling curve analysis. Fe promotes primary-Al grain refinement from growth restriction and constitutional undercooling effects but increases detrimental β–(Al9Fe2Si2) intermetallic. Mn contributes to primary-Al grain refinement from growth restriction and promotes the formation of α–Al15(Fe,Mn)3Si2 at the expense of increased intermetallic content. Al–5Ti–1B inoculation not only produces the strongest refinement of primary-Al grains but also refines the Fe-intermetallics by enhancing their nucleation and restricting their growth volume in the interdendritic liquid pockets.
published_date 2021-05-01T04:11:02Z
_version_ 1763753761194377216
score 11.035655

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