Abstract
Significant growth in knowledge about metal additive manufacturing (AM) affects the increase of interest in military solutions, where there is always a need for unique technologies and materials. An important section of materials in the military are those dedicated to armour production. An AM material is characterised by different behaviour than those conventionally made, especially during more dynamic loading such as ballistics testing. In this paper, M300 maraging steel behavior was analysed under the condition of ballistic testing. The material was tested before and after solution annealing and ageing. This manuscript also contains some data based on structural analysis and tensile testing with digital image correlation. Based on the conducted research, M300 maraging steel was found to be a helpful material for some armour solutions after pre- or post-processing activities. Conducted solution annealing and ageing increased the ballistic properties by 87% in comparison to build samples. At the same time, the material’s brittleness increased, which affected a significant growth in fragmentation of the perforated plate. According to such phenomena, a detailed fracture analysis was made.
Highlights
Military usage of additive manufacturing (AM) has become increasingly popular because of the significant growth of different technologies and dedicated materials for those technologies [1,2,3,4]
A different approach was suggested by Zochowski et al [20], where the authors analysed ballistic properties of bulletproof vest inserts made of AM-made titanium alloy
Tensile strength increased by almost 45% but, at the same time, elongation
Summary
Military usage of AM has become increasingly popular because of the significant growth of different technologies and dedicated materials for those technologies [1,2,3,4]. The obtained results are very encouraging, especially considering that lightweight materials (aluminium and titanium-based) are an interest of many research facilities [10,11,12,13,14,15,16,17,18,19]. In Hassanin et al.’s [21] work, the authors proved an increased, higher ballistic performance of AM metamaterial characterised by the shape memory, superelasticity, and negative Poisson’s ratio properties compared to conventional steel higher ballistic performance of AM metamaterial characterised by the shape memory, su‐. Hmelaptfiuolninanudndbearlsltisatnidc‐itnegsttihnegepffreocptserotfiesso.lution annealing and ageing in AM plates on tensile-deformation and ballistic-testing properties.
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