WEAR BEHAVIOR OF SELECTIVE LASER MELTED AlSi10Mg FOR THE AS- PRINTED AND VARIOUS HEAT TREATED CONDITIONS

MECHANICAL ENGINEERING

Exploring the effects of various process parameters in Selective Laser Melting (SLM) — laser power, scan speed, scan spacing, and island size utilizing a Concept Laser M2 system — has been a crucial investigation in the fabrication of AlSi10Mg alloy structures. Understanding how temperature impacts the wear properties of AlSi10Mg, particularly through SLM, is a significant aspect of this study. The mechanisms binding the powder during the process, be it melting or solid-state/liquid-phase sintering, are temperature-dependent. Hence, local temperature fields play a vital role in maintaining process stability and ensuring the quality of the fabricated components. Furthermore, the study also delves into the influence of heat treatment on Aluminum applications, particularly focusing on the effect of various heat treatments on AlSi10Mg. This initiative aims to enhance the wear resistance of the material, especially for applications in the automobile industry, such as brake drums or brake discs. A two-factor interaction model reveals that laser power, scan speed, and the interaction between scan speed and scan spacing significantly impact the porosity development in the built structures. Employing statistical methods to minimize porosity fraction, the study derived optimal process parameters.

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