This study explored the process-structure-property (PSP) relationships in Ti-6Al-4V alloys fabricated through direct energy deposition (DED) additive manufacturing. A systematic investigation was conducted to clarify how process variables—specifically, manipulating the cooling rate and energy input by adjusting the laser power and scan speed during the DED process—influenced the phase fractions, pore structures, and the resultant mechanical properties of the samples under various processing conditions. Significant links were found between the controlled process parameters and the structural and mechanical characteristics of the produced alloys. The findings of this research provide foundational knowledge that will drive the development of more effective and precise control strategies in additive manufacturing, thereby improving the performance and reliability of produced materials. This, in turn, promises to make significant contributions to both the advancement of additive manufacturing technologies and their applications in critical sectors.

1. Introduction 
2. Experimental 
3. Results and Discussion 
    3-1 공정 조건에 따른 기공 구조 
    3-2 공정 조건에 따른 상 분율 
    3-3 기공 구조 및 상분율에 따른 기계적 특성 
4. Conclusion 
Conflict of Interest Declaration  
Author Information and Contribution  
Acknowledgement
References

• 김주호(국민대학교 신소재공학부) | Juho Kim (School of Materials Science and Engineering, Kookmin University, Seoul 02707, Republic of Korea)
• 전서연(국민대학교 신소재공학부) | Seoyeon Jeon (School of Materials Science and Engineering, Kookmin University, Seoul 02707, Republic of Korea)
• 박화진(국민대학교 신소재공학부) | Hwajin Park (School of Materials Science and Engineering, Kookmin University, Seoul 02707, Republic of Korea)
• 김태열(국민대학교 신소재공학부) | Taeyoel Kim (School of Materials Science and Engineering, Kookmin University, Seoul 02707, Republic of Korea)
• 최현주(국민대학교 신소재공학부) | Hyunjoo Choi (School of Materials Science and Engineering, Kookmin University, Seoul 02707, Republic of Korea) Corresponding author