Recent Advances in the Alsi10mg Materials Fabrication By Selective Laser Melting: Process Parameters, Optimization, Low-Velocity and Ballistic İmpact Responses

Abstract

The global landscape underscores the critical need for nations to develop indigenous production capabilities to fulfill both their defense requirements and those of allied nations. This necessity is increasingly addressed not through mere augmentation of investments in armor and ballistic-resistant structures, but by executing integrative projects and establishing robust R&D infrastructures. In this context, Selective Laser Melting (SLM) technology, a subset of additive manufacturing, presents a significant opportunity due to its proficiency in fabricating intricate geometries. This review meticulously examines the impact of variable process parameters on the mechanical properties of SLM-fabricated AlSi10Mg components. Utilizing Response Surface Methodology (RSM), the study systematically analyzes data derived from literature to identify the most optimal parameters. Furthermore, the review encompasses recent investigations into the low-speed impact and ballistic performance of SLM AlSi10Mg alloys, providing a comprehensive understanding of their applicability in defense-related applications. Key areas of focus include the influence of laser power, scanning speed, hatch spacing, and layer thickness on the resultant mechanical properties, such as density, tensile strength, and fatigue resistance. The review also delves into the post-processing techniques that enhance the performance of SLM parts, including heat treatment and surface finishing. By integrating findings from various studies, this review article aims to elucidate the potential of SLM technology in advancing the production of high-performance materials for defense applications, thereby contributing to the strategic autonomy of nations in the defense sector.