TY - JOUR
T1 - Comparative analysis of mechanical properties enhancement in SCM440 through similar and dissimilar material deposition using directed energy deposition method
AU - Han, Soo Bin
AU - Lee, Hojin
AU - Jang, Jin Seok
AU - Cho, Yong Jae
AU - Park, Sung Hyuk
AU - Song, Hyejin
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/9/1
Y1 - 2024/9/1
N2 - The Directed Energy Deposition (DED) method, which utilizes metal powder and a high-powder laser directed at specific locations on a substrate, is employed across various fields for repairing and refurbishing existing parts. In this study, two types of multi-materials were fabricated by depositing materials similar in alloy composition, and dissimilar, respectively, on an SCM440 substrate using the DED method. Unlike similar material, depositing the dissimilar material resulted in a recrystallized fine microstructure in the interlayer region, which enhanced the tensile properties of the multi-layer specimens. The yield strength, tensile strength, and elongation of the multi-layer specimen with similar material were 562 MPa, 787 MPa, and 14%, respectively, while those of the specimen with dissimilar material were significantly higher at 934 MPa, 1016 MPa, and 30%. These results demonstrate that using dissimilar materials, rather than identical or similar compositions, can improve the tensile properties when repairing and refurbishing parts made of SCM440 material.
AB - The Directed Energy Deposition (DED) method, which utilizes metal powder and a high-powder laser directed at specific locations on a substrate, is employed across various fields for repairing and refurbishing existing parts. In this study, two types of multi-materials were fabricated by depositing materials similar in alloy composition, and dissimilar, respectively, on an SCM440 substrate using the DED method. Unlike similar material, depositing the dissimilar material resulted in a recrystallized fine microstructure in the interlayer region, which enhanced the tensile properties of the multi-layer specimens. The yield strength, tensile strength, and elongation of the multi-layer specimen with similar material were 562 MPa, 787 MPa, and 14%, respectively, while those of the specimen with dissimilar material were significantly higher at 934 MPa, 1016 MPa, and 30%. These results demonstrate that using dissimilar materials, rather than identical or similar compositions, can improve the tensile properties when repairing and refurbishing parts made of SCM440 material.
KW - Additive manufacturing
KW - Dissimilar materials
KW - Microstructure
KW - Multi-materials
KW - Tensile properties
UR - http://www.scopus.com/inward/record.url?scp=85201732990&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2024.08.098
DO - 10.1016/j.jmrt.2024.08.098
M3 - Article
AN - SCOPUS:85201732990
SN - 2238-7854
VL - 32
SP - 2691
EP - 2704
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
ER -