금속적층제조적층제조 전용 합금적층제조 전용 분말전략적 신 적층제조 공정설계성분미세조직형상 이질성이종Metal Additive ManufacturingAlloys for Additive ManufacturingPowders for Additive ManufacturingStrategic New AM Process DesignCompositionMicrostructureShape HeterogeneityMulti-materialLightweight Heterogenic StructureSustainable Structural Mat