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Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys
The metallurgy of cast aluminum alloys has always been considered to be different from that of wrought alloys. Metallurgists have been taught that pores are intrinsic in cast aluminum alloys and that mechanical properties in cast aluminum alloys are controlled by dendrite arm spacing, the presence o...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7254244/ https://www.ncbi.nlm.nih.gov/pubmed/32344917 http://dx.doi.org/10.3390/ma13092019 |
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author | Tiryakioğlu, Murat |
author_facet | Tiryakioğlu, Murat |
author_sort | Tiryakioğlu, Murat |
collection | PubMed |
description | The metallurgy of cast aluminum alloys has always been considered to be different from that of wrought alloys. Metallurgists have been taught that pores are intrinsic in cast aluminum alloys and that mechanical properties in cast aluminum alloys are controlled by dendrite arm spacing, the presence of Fe-bearing particles, and the size of Si particles in Al–Si alloys, which fracture and debond during deformation, leading to premature failure. Whether these effects are intrinsic or extrinsic, i.e., mere correlations due to the structural quality of castings, is discussed in detail. Ideal properties are discussed, based on findings presented mostly in physics literature. Pores and hot tears in aluminum castings are extrinsic. Moreover, the effect of dendrite arm spacing on elongation, precipitation, and subsequent fracture of β–Al(5)FeSi platelets, and finally Si particle fracture and debonding are all extrinsic. A fundamental change in how we approach the metallurgy of cast aluminum alloys is necessary. |
format | Online Article Text |
id | pubmed-7254244 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72542442020-06-10 Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys Tiryakioğlu, Murat Materials (Basel) Perspective The metallurgy of cast aluminum alloys has always been considered to be different from that of wrought alloys. Metallurgists have been taught that pores are intrinsic in cast aluminum alloys and that mechanical properties in cast aluminum alloys are controlled by dendrite arm spacing, the presence of Fe-bearing particles, and the size of Si particles in Al–Si alloys, which fracture and debond during deformation, leading to premature failure. Whether these effects are intrinsic or extrinsic, i.e., mere correlations due to the structural quality of castings, is discussed in detail. Ideal properties are discussed, based on findings presented mostly in physics literature. Pores and hot tears in aluminum castings are extrinsic. Moreover, the effect of dendrite arm spacing on elongation, precipitation, and subsequent fracture of β–Al(5)FeSi platelets, and finally Si particle fracture and debonding are all extrinsic. A fundamental change in how we approach the metallurgy of cast aluminum alloys is necessary. MDPI 2020-04-25 /pmc/articles/PMC7254244/ /pubmed/32344917 http://dx.doi.org/10.3390/ma13092019 Text en © 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Perspective Tiryakioğlu, Murat Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys |
title | Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys |
title_full | Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys |
title_fullStr | Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys |
title_full_unstemmed | Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys |
title_short | Intrinsic and Extrinsic Effects of Microstructure on Properties in Cast Al Alloys |
title_sort | intrinsic and extrinsic effects of microstructure on properties in cast al alloys |
topic | Perspective |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7254244/ https://www.ncbi.nlm.nih.gov/pubmed/32344917 http://dx.doi.org/10.3390/ma13092019 |
work_keys_str_mv | AT tiryakioglumurat intrinsicandextrinsiceffectsofmicrostructureonpropertiesincastalalloys |