Influência do tempo de interpasse nas propriedades mecânicas de paredes em aço inoxidável 308L fabricadas por manufatura aditiva

Abstract

The management of heat accumulation in Wire Arc Additive Manufacturing (WAAM) is critical to the mechanical properties of the material. This work analyzes the influence of interpass time (60, 180, and 300 seconds) on the hardness and tensile properties of 308L stainless steel walls. The results indicate that increasing the dwell time significantly increases hardness and yield strength, with the 300-second condition yielding the highest values and the most uniform distribution. In contrast, tensile strength showed an inverse trend, decreasing with increasing interpass time. The study demonstrates that interpass time is an effective passive strategy for controlling and optimizing the mechanical performance of 308L steel parts manufactured by arc deposition additive manufacturing.