Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum

This paper reviews the role of void nucleation, growth, and coalescence on the spall failure process in light metals. Based on the review of the open literature, the preponderance of evidence show that void nucleation, growth, and coalescence are prevalent in light metals such as HCP magnesium and F...

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Main Author: Cyril Labode Williams
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/12/10/1667
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author Cyril Labode Williams
author_facet Cyril Labode Williams
author_sort Cyril Labode Williams
collection DOAJ
description This paper reviews the role of void nucleation, growth, and coalescence on the spall failure process in light metals. Based on the review of the open literature, the preponderance of evidence show that void nucleation, growth, and coalescence are prevalent in light metals such as HCP magnesium and FCC aluminum alloys. The as-received microstructure and its evolution play a crucial role on how voids nucleate, grow, and coalesce. Nucleation of voids in these light metals and metallic alloys can be either homogeneous and heterogeneous but at high enough stresses, both homogeneous and heterogeneous nucleation can be activated simultaneously. Secondary phase particles and intermetallics can strongly influence spall failure, through matrix-precipitate/intermetallic debonding or precipitate/intermetallic cracking during shock compression. Studying spall failure through modeling has proven to be an invaluable tool in developing a fundamental understanding of void nucleation, growth, coalescence, and consequent spall failure. However, since new alloys are currently been developed, more experimental and modeling research are needed to further understand how spall failure initiate and grow in these new alloys.
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spelling doaj.art-6e1e4471df15487c873f651a8b40f2142023-11-24T01:18:46ZengMDPI AGMetals2075-47012022-10-011210166710.3390/met12101667Void Mediated Failure at the Extremes: Spallation in Magnesium and AluminumCyril Labode Williams0Applied Physics Branch, DEVCOM Army Research Laboratory, Aberdeen, MD 21005, USAThis paper reviews the role of void nucleation, growth, and coalescence on the spall failure process in light metals. Based on the review of the open literature, the preponderance of evidence show that void nucleation, growth, and coalescence are prevalent in light metals such as HCP magnesium and FCC aluminum alloys. The as-received microstructure and its evolution play a crucial role on how voids nucleate, grow, and coalesce. Nucleation of voids in these light metals and metallic alloys can be either homogeneous and heterogeneous but at high enough stresses, both homogeneous and heterogeneous nucleation can be activated simultaneously. Secondary phase particles and intermetallics can strongly influence spall failure, through matrix-precipitate/intermetallic debonding or precipitate/intermetallic cracking during shock compression. Studying spall failure through modeling has proven to be an invaluable tool in developing a fundamental understanding of void nucleation, growth, coalescence, and consequent spall failure. However, since new alloys are currently been developed, more experimental and modeling research are needed to further understand how spall failure initiate and grow in these new alloys.https://www.mdpi.com/2075-4701/12/10/1667spall failurespall strengthvoidsnucleationcoalescencegrowth
spellingShingle Cyril Labode Williams
Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum
Metals
spall failure
spall strength
voids
nucleation
coalescence
growth
title Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum
title_full Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum
title_fullStr Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum
title_full_unstemmed Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum
title_short Void Mediated Failure at the Extremes: Spallation in Magnesium and Aluminum
title_sort void mediated failure at the extremes spallation in magnesium and aluminum
topic spall failure
spall strength
voids
nucleation
coalescence
growth
url https://www.mdpi.com/2075-4701/12/10/1667
work_keys_str_mv AT cyrillabodewilliams voidmediatedfailureattheextremesspallationinmagnesiumandaluminum