Ballistic performance and microstructure of modified rolled homogeneous armor steel

Hu, Cui-E; Lee, Pee‐Yew; Chen, Jium-Shyong

doi:10.1080/02533839.2002.9670684

Cited by 31 publications

(18 citation statements)

References 4 publications

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“…In transformed bands, a crystallographic phase change occurs. In steels, they are often called 'white bands' because of their appearance after etching and are quite different from the matrix 32 . An example for this appearance is illustrated in Fig.…”

Section: Deformation and Failurementioning

confidence: 99%

Development of a New Armor Steel and its Ballistic Performance

Atapek¹

2013

DSJ

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Section: Deformation and Failurementioning

confidence: 99%

Development of a New Armor Steel and its Ballistic Performance

Atapek¹

2013

DSJ

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“…High temperatures can form because of high friction of the projectile during penetration. On microscopic examination, adiabatic shear bands appear as narrow bands in which cracks can propagate, indicating catastrophic failure of the material 10 . Several models and theories have been developed to explain the occurrence of adiabatic shear bands in metals and alloys.…”

Section: Results and Discussion 31 Microstructural Characterisationmentioning

confidence: 99%

“…Inside the band the grains are highly distorted, but there is no evident change in the structure of the material. In transformed bands, a crystallographic phase change occurs 10 . In steels, these are often called white bands because of their appearance after etching, and are quite different from the matrix Fig.…”

Section: Results and Discussion 31 Microstructural Characterisationmentioning

confidence: 99%

“…The hardness of the armour material will play a barrier role in the interaction with a projectile at high strike velocity 7 . A number of studies have revealed that the hardness has a direct effect on the ballistic performance of the materials [8][9][10] . An increase in the hardness of a material indicates that its ballistic performance will improve 11 .…”

Section: Introductionmentioning

confidence: 99%

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Ballistic Impact Behaviour of a Tempered Bainitic Steel Against 7.62 mm Armour Piercing Projectile

Atapek

Karagöz

2011

DSJ

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In this study, occurence of failure after the interaction between an armour piercing 7.62 mm caliber projectile and a tempered bainitic steel has been investigated. The shot was performed at zero degree with a projectile velocity of 840 m/s. After the shot, microstructural and fractographical examinations were carried out on the sample taken from the perforated region. In the etched sample, it was observed that the morphology of the original microstructure had changed and adiabatic shear bands (ASBs) were formed in regions close to the direction of penetration. Main failure is ductile (plastic) deformation was followed by cleavage after shot. Cracks due to adiabatic shear band and formation of abrasive wear were seen. The perforation mode of the steel was a typical petalling.

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“…With each material appearing significant in respective applications, metals are mostly utilised for ballistic protection due to its mechanical properties. Therefore metals of high tensile, hardness, and ductility were numerously proposed as a ballistic protection plate [1][2][3][4][5]. Based on mechanics of projectile impact, the penetration of bullets depends on many factors that occur over three phases namely the initial impact phase, stress propagation phase, and fracture initiation phase [6].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and microstructures of steel panels for laminated composites in armoured vehicles

Jamil

Aripin

Sajuri³

et al. 2022

Int. J. Automot. Mech. Eng.

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This paper present the study about the mechanical properties of two high strength low alloy steels for replacing the current rolled homogeneous armour (RHA) for ballistic application. High strength low alloy steel has been widely adapted as a ballistic plate in light armoured vehicle. However, the current used RHA plate is very heavy thus restricted the manoeuvrability of the armoured vehicle. The aim of this study is to find materials suitable to be used for production of composite protection panel which is lighter yet has similar mechanical properties to RHA. The tensile strength and hardness of AISI 4340 and AR500 steels were evaluated and compared to that of RHA and the results were analysed based on its chemical compositions and microstructural observation. Values of these properties are primarily reflected by its microstructures and chemical compositions. Therefore, microscopic observation of microstructural arrangement and phases are essential in understanding the hardness and stress-strain behaviour of these metals. Results indicate similar tensile properties were observed in RHA and AR500 but different properties obtained for AISI 4340. Tensile strength of RHA and AR500 were 1750 MPa and 1740 MPa respectively followed by AISI 4340 at 1020 MPa. AISI 4340 steel exhibited the highest elongation at 20.6% compared to RHA and AR500 at 13.3 and 12.5%, respectively. Higher degree of carbon content in fine martensitic structure of RHA and AR500 led to high hardness. Imperfections in RHA and AR500 were also removed by hot rolling process as indicated by white banding that cause higher in tensile strength. Retained austenite and coarse microstructure of AISI 4340 steel contributed to higher ductility compared to AR500 and RHA. Therefore the tensile properties of RHA and AR500 were found similar due to its microstructure behaviour. This similarity allows AR500 to be utilised as alternatives to RHA in armour plate application.

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Ballistic performance and microstructure of modified rolled homogeneous armor steel

Cited by 31 publications

References 4 publications

Development of a New Armor Steel and its Ballistic Performance

Development of a New Armor Steel and its Ballistic Performance

Ballistic Impact Behaviour of a Tempered Bainitic Steel Against 7.62 mm Armour Piercing Projectile

Mechanical properties and microstructures of steel panels for laminated composites in armoured vehicles

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