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Vol.1, No.4, 2022: pp.148-155

WELDING OF HIGH-HARDNESS ARMOR STEEL

Authors:

Aleksandar Čabrilo1

, Nenad Janjić1
1Higher Education Technical School of Professional Studies, Skolska 2, Novi Sad, Serbia

Received: 13.09.2022.
Accepted: 29.11.2022.
Available: 31.12.2022.

Abstract:

Armor steels are difficult to weld due to the high percentage of carbon. The coarse-grained area and the fusion line in the welded joint are sensitive areas due to the high hardness and the possible presence of hydrogen produced during the welding process. Furthermore, multi-purpose armored vehicles made of armored steel are exposed to dynamic loading due to traffic on rough terrain. High hardness in the coarse-grained area of the heat-affected zone and dynamic loading can cause cracks. In the weld metal zone, a crack created during the welding process or due to pores can quickly propagate toward the sensitive fusion line, after which its accelerated growth can occur. Based on the above, achieving a welded joint without porosity or cracks for armor steel is necessary. This paper investigated the welding process of high-hardness armor steel with two regimes. The test aims to achieve an optimal hardness level and a compromise between ballistic requirements and toughness. The test results showed that a high-quality welded joint and an optimal balance between hardness and toughness are achieved with increased heat input.

Keywords:

Armor steel, austenitic filler material, steel hardness, steel toughness, armored vehicles, GMAW process

References:

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© 2022 by the authors. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 3
Number 1
March 2024.

 

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How to Cite

A. Čabrilo, N. Janjić, Welding of High-Hardness Armor Steel. Advanced Engineering Letters, 1(4), 2022: 148–155.
https://doi.org/10.46793/adeletters.2022.1.4.5

More Citation Formats

Čabrilo, A., & Janjić, N. (2022). Welding of High-Hardness Armor Steel. Advanced Engineering Letters1(4), 148–155. https://doi.org/10.46793/adeletters.2022.1.4.5

Čabrilo, Aleksandar, and Nenad Janjić. “Welding of High-Hardness Armor Steel.” Advanced Engineering Letters, vol. 1, no. 4, 2022, pp. 148–55, https://doi.org/10.46793/adeletters.2022.1.4.5.

Čabrilo, Aleksandar, and Nenad Janjić. 2022. “Welding of High-Hardness Armor Steel.” Advanced Engineering Letters 1 (4): 148–55. https://doi.org/10.46793/adeletters.2022.1.4.5.

Čabrilo, A. and Janjić, N. (2022). Welding of High-Hardness Armor Steel. Advanced Engineering Letters, 1(4), pp.148–155. doi: 10.46793/adeletters.2022.1.4.5.