Weldability and Impact Energy Properties of High-Hardness Armor Steel

Journal Article · Thu Mar 15 04:00:00 EDT 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-018-3211-3· OSTI ID:22858029

Cabrilo, Aleksandar; Geric, Katarina ^[1]; Jovanovic, Milos ^[2]; Vukic, Lazic ^[3]

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1. University of Novi Sad, Faculty of Technical Sciences (Serbia)
2. Welding Institute (Slovenia)
3. University of Kragujevac, Faculty of Engineering (Serbia)

In this study, the weldability of high-hardness armor steel by the gas metal arc welding method has been investigated. The study was aimed at determining the weakness points of manual welding compared to automated welding through microhardness testing, the cooling rate, tensile characteristics and nondestructive analysis. Detailed studies were performed for automated welding on the impact energy and microhardness in the fusion line, as the most sensitive zone of the armor steel weld joint. It was demonstrated that the selection of the preheating and interpass temperature is important in terms of the cooling rate and quantity of diffusible and retained hydrogen in the weld joint. The tensile strength was higher than 800 MPa. The width of the heat-affected zone did not exceed 15.9 mm, measured from the weld centerline, while the impact energy results were 74 and 39 J at 20 and – 40 °C, respectively.

• OSTI ID: 22858029
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 3 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ARMOR
COMPARATIVE EVALUATIONS
GAS METAL-ARC WELDING
HEAT AFFECTED ZONE
HEAT TREATMENTS
MICROHARDNESS
NONDESTRUCTIVE ANALYSIS
POROSITY
STEELS
TENSILE PROPERTIES
WELDABILITY
WELDED JOINTS