Cover Image

Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite

This work investigated the microstructure evolution, tensile, impact, hardness, and sliding wear properties of an Al–20Mg2Si–2Cu in situ composite treated with different Bi contents. The desired modification of primary Mg2Si particles was achieved with the addition of 0.4 wt% Bi. Increasing Bi beyon...

Full description

Saved in:
Bibliographic Details
Main Authors: Farahany, S., Ghandvar, H., Nordin, N. A., Ourdjini, A., Idris, M. H.
Format: Article
Published: Chinese Society of Metals 2016
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/71779/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973137342&doi=10.1016%2fj.jmst.2016.01.014&partnerID=40&md5=d87e08c16a3ee7deefdf8aba7e3604a4
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.71779
record_format eprints
spelling my.utm.717792017-11-15T03:06:46Z http://eprints.utm.my/id/eprint/71779/ Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite Farahany, S. Ghandvar, H. Nordin, N. A. Ourdjini, A. Idris, M. H. TJ Mechanical engineering and machinery This work investigated the microstructure evolution, tensile, impact, hardness, and sliding wear properties of an Al–20Mg2Si–2Cu in situ composite treated with different Bi contents. The desired modification of primary Mg2Si particles was achieved with the addition of 0.4 wt% Bi. Increasing Bi beyond 0.4 wt% resulted in a loss of modification, possibly due to the formation of Al8MgBiSi4 compound before the precipitation of the primary Mg2Si. Additionally, the structure of the pseudo-eutectic Mg2Si was transformed from plate to fibrous, which was consistent with decrease of growth temperature extracted from the cooling curve thermal analysis. Addition of Bi had an effect on the morphology of Al5FeSi (β), Al2Cu (θ) and Al5Cu2Mg8Si6 (Q) intermetallic compounds. The tensile strength, elongation percentage, impact toughness, and hardness increased by 6%, 13%, 75%, and 23%, respectively, due to modification of both the primary and eutectic Mg2Si crystals. The tensile and impact fracture surfaces showed fewer decohered particles in the Bi-treated composite. The enhancement in wear resistance of the Bi-treated composite could be attributed to solid lubricant function of insoluble soft Bi phase and modification effects on Mg2Si particles. Chinese Society of Metals 2016 Article PeerReviewed Farahany, S. and Ghandvar, H. and Nordin, N. A. and Ourdjini, A. and Idris, M. H. (2016) Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite. Journal of Materials Science and Technology, 32 (11). pp. 1083-1097. ISSN 1005-0302 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973137342&doi=10.1016%2fj.jmst.2016.01.014&partnerID=40&md5=d87e08c16a3ee7deefdf8aba7e3604a4
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Farahany, S.
Ghandvar, H.
Nordin, N. A.
Ourdjini, A.
Idris, M. H.
Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite
description This work investigated the microstructure evolution, tensile, impact, hardness, and sliding wear properties of an Al–20Mg2Si–2Cu in situ composite treated with different Bi contents. The desired modification of primary Mg2Si particles was achieved with the addition of 0.4 wt% Bi. Increasing Bi beyond 0.4 wt% resulted in a loss of modification, possibly due to the formation of Al8MgBiSi4 compound before the precipitation of the primary Mg2Si. Additionally, the structure of the pseudo-eutectic Mg2Si was transformed from plate to fibrous, which was consistent with decrease of growth temperature extracted from the cooling curve thermal analysis. Addition of Bi had an effect on the morphology of Al5FeSi (β), Al2Cu (θ) and Al5Cu2Mg8Si6 (Q) intermetallic compounds. The tensile strength, elongation percentage, impact toughness, and hardness increased by 6%, 13%, 75%, and 23%, respectively, due to modification of both the primary and eutectic Mg2Si crystals. The tensile and impact fracture surfaces showed fewer decohered particles in the Bi-treated composite. The enhancement in wear resistance of the Bi-treated composite could be attributed to solid lubricant function of insoluble soft Bi phase and modification effects on Mg2Si particles.
format Article
author Farahany, S.
Ghandvar, H.
Nordin, N. A.
Ourdjini, A.
Idris, M. H.
author_facet Farahany, S.
Ghandvar, H.
Nordin, N. A.
Ourdjini, A.
Idris, M. H.
author_sort Farahany, S.
title Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite
title_short Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite
title_full Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite
title_fullStr Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite
title_full_unstemmed Effect of primary and eutectic Mg2Si crystal modifications on the mechanical properties and sliding wear behaviour of an Al–20Mg2Si–2Cu–xBi composite
title_sort effect of primary and eutectic mg2si crystal modifications on the mechanical properties and sliding wear behaviour of an al–20mg2si–2cu–xbi composite
publisher Chinese Society of Metals
publishDate 2016
url http://eprints.utm.my/id/eprint/71779/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973137342&doi=10.1016%2fj.jmst.2016.01.014&partnerID=40&md5=d87e08c16a3ee7deefdf8aba7e3604a4
_version_ 1643656278471344128
score 13.211869

Similar Items