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Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments

The purpose of this study is to examine the projectile penetration resistance of the base metal and heat-affected zones of armor steel weldments. To ensure the proper quality of armor steel welded joints and associated ballistic protection, it is important to find the optimum heat input for armor st...

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Autores principales: Savic, Branko, Cabrilo, Aleksandar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269620/
https://www.ncbi.nlm.nih.gov/pubmed/34209523
http://dx.doi.org/10.3390/ma14133617
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author Savic, Branko
Cabrilo, Aleksandar
author_facet Savic, Branko
Cabrilo, Aleksandar
author_sort Savic, Branko
collection PubMed
description The purpose of this study is to examine the projectile penetration resistance of the base metal and heat-affected zones of armor steel weldments. To ensure the proper quality of armor steel welded joints and associated ballistic protection, it is important to find the optimum heat input for armor steel welding. A total of two armor steel weldments made at heat inputs of 1.29 kJ/mm and 1.55 kJ/mm were tested for ballistic protection performance. The GMAW welding carried out employing a robot-controlled process. Owing to a higher ballistic limit, the heat-affected zone (HAZ) of the 1.29 kJ/mm weldment was found to be more resistant to projectile penetration than that of the 1.55 kJ/mm weldment. The ballistic performance of the weldments was determined by analyzing the microstructure of weldment heat-affected zones, the hardness gradients across the weldments and the thermal history of the welding heat inputs considered. The result showed that the ballistic resistance of heat affected zone exist as the heat input was decreased on 1.29 kJ/mm. It was found that 1.55 kJ/mm does not have ballistic resistance.
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spelling pubmed-82696202021-07-10 Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments Savic, Branko Cabrilo, Aleksandar Materials (Basel) Article The purpose of this study is to examine the projectile penetration resistance of the base metal and heat-affected zones of armor steel weldments. To ensure the proper quality of armor steel welded joints and associated ballistic protection, it is important to find the optimum heat input for armor steel welding. A total of two armor steel weldments made at heat inputs of 1.29 kJ/mm and 1.55 kJ/mm were tested for ballistic protection performance. The GMAW welding carried out employing a robot-controlled process. Owing to a higher ballistic limit, the heat-affected zone (HAZ) of the 1.29 kJ/mm weldment was found to be more resistant to projectile penetration than that of the 1.55 kJ/mm weldment. The ballistic performance of the weldments was determined by analyzing the microstructure of weldment heat-affected zones, the hardness gradients across the weldments and the thermal history of the welding heat inputs considered. The result showed that the ballistic resistance of heat affected zone exist as the heat input was decreased on 1.29 kJ/mm. It was found that 1.55 kJ/mm does not have ballistic resistance. MDPI 2021-06-29 /pmc/articles/PMC8269620/ /pubmed/34209523 http://dx.doi.org/10.3390/ma14133617 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Savic, Branko
Cabrilo, Aleksandar
Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments
title Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments
title_full Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments
title_fullStr Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments
title_full_unstemmed Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments
title_short Effect of Heat Input on the Ballistic Performance of Armor Steel Weldments
title_sort effect of heat input on the ballistic performance of armor steel weldments
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269620/
https://www.ncbi.nlm.nih.gov/pubmed/34209523
http://dx.doi.org/10.3390/ma14133617
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