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Journal article 1345 views

Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy

D.G. Leo Prakash, Doris Regener, Leo Prakash Orcid Logo

Journal of Alloys and Compounds, Volume: 461, Issue: 1-2, Pages: 139 - 146

Swansea University Author: Leo Prakash Orcid Logo

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DOI (Published version): 10.1016/j.jallcom.2007.07.017

Abstract

Quantitative characterization of size and spatial arrangement of β phase particles (β-PP) and grain size by the developed image processing algorithm was studied in this paper. This is expected to be useful to understand the processing–property–microstructure correlation of high-pressure die cast (HP...

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Published in: Journal of Alloys and Compounds
Published: 2008
URI: https://cronfa.swan.ac.uk/Record/cronfa17641
first_indexed 2015-05-08T02:01:52Z
last_indexed 2018-02-09T04:51:26Z
id cronfa17641
recordtype SURis
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spelling 2015-11-02T14:30:06.5095003 v2 17641 2014-04-01 Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy bd72868c48af6c0b04bf9f6bb48ce324 0000-0002-8812-8927 Leo Prakash Leo Prakash true false 2014-04-01 EAAS Quantitative characterization of size and spatial arrangement of β phase particles (β-PP) and grain size by the developed image processing algorithm was studied in this paper. This is expected to be useful to understand the processing–property–microstructure correlation of high-pressure die cast (HPDC) AZ91 alloy. The important parameters of image processing like montage creation, separation of different phases and grains and the characterization procedure are explained. The microstructural quantities such as average size, average nearest neighbour distance (NND), area fraction, grain size and clustering tendency (CT) of β-PP obtained as a function of distance from surface to centre of the casting. The β phase particles are more in number and finer in the surface region compared to the centre of the casting, the average particles size in centre region is one and half times of surface region. There is no considerable change in the area fraction of β phase in different regions throughout the casting and this is a contradictory conclusion from the previous understanding. A minor clustering nature of β-PP is observed in the surface region and the random nature is increasing from the surface to centre of the casting. In addition the grains are very fine in the surface region compared to the centre of the castings. Journal Article Journal of Alloys and Compounds 461 1-2 139 146 Metals and alloys; High-pressure die casting; Microstructure; Metallography 11 8 2008 2008-08-11 10.1016/j.jallcom.2007.07.017 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2015-11-02T14:30:06.5095003 2014-04-01T10:12:06.4145142 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering D.G. Leo Prakash 1 Doris Regener 2 Leo Prakash 0000-0002-8812-8927 3
title Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
spellingShingle Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
Leo Prakash
title_short Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
title_full Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
title_fullStr Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
title_full_unstemmed Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
title_sort Quantitative characterization of Mg17Al12 phase and grain size in HPDC AZ91 magnesium alloy
author_id_str_mv bd72868c48af6c0b04bf9f6bb48ce324
author_id_fullname_str_mv bd72868c48af6c0b04bf9f6bb48ce324_***_Leo Prakash
author Leo Prakash
author2 D.G. Leo Prakash
Doris Regener
Leo Prakash
format Journal article
container_title Journal of Alloys and Compounds
container_volume 461
container_issue 1-2
container_start_page 139
publishDate 2008
institution Swansea University
doi_str_mv 10.1016/j.jallcom.2007.07.017
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 Quantitative characterization of size and spatial arrangement of β phase particles (β-PP) and grain size by the developed image processing algorithm was studied in this paper. This is expected to be useful to understand the processing–property–microstructure correlation of high-pressure die cast (HPDC) AZ91 alloy. The important parameters of image processing like montage creation, separation of different phases and grains and the characterization procedure are explained. The microstructural quantities such as average size, average nearest neighbour distance (NND), area fraction, grain size and clustering tendency (CT) of β-PP obtained as a function of distance from surface to centre of the casting. The β phase particles are more in number and finer in the surface region compared to the centre of the casting, the average particles size in centre region is one and half times of surface region. There is no considerable change in the area fraction of β phase in different regions throughout the casting and this is a contradictory conclusion from the previous understanding. A minor clustering nature of β-PP is observed in the surface region and the random nature is increasing from the surface to centre of the casting. In addition the grains are very fine in the surface region compared to the centre of the castings.
published_date 2008-08-11T18:35:05Z
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score 11.048302

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