Local composition detouring for defect-free compositionally graded materials in additive manufacturing

Eun Seong Kim; Jeong Min Park; Gangaraju Manogna Karthik; Kyung Tae Kim; Ji-Hun Yu; Byeong-Joo Lee; Hyoung Seop Kim

doi:10.1080/21663831.2023.2192244

Materials Research Letters (Jul 2023)

Local composition detouring for defect-free compositionally graded materials in additive manufacturing

Eun Seong Kim,
Jeong Min Park,
Gangaraju Manogna Karthik,
Kyung Tae Kim,
Ji-Hun Yu,
Byeong-Joo Lee,
Hyoung Seop Kim

Affiliations

Eun Seong Kim: Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
Jeong Min Park: Department of 3D Printing Materials, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
Gangaraju Manogna Karthik: Department of Mechanical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi, India
Kyung Tae Kim: Department of 3D Printing Materials, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
Ji-Hun Yu: Department of 3D Printing Materials, Korea Institute of Materials Science (KIMS), Changwon, Republic of Korea
Byeong-Joo Lee: Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
Hyoung Seop Kim: Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, Republic of Korea

DOI: https://doi.org/10.1080/21663831.2023.2192244
Journal volume & issue: Vol. 11, no. 7
pp. 586 – 594

Abstract

Read online

This study investigated cracking phenomena in 316L stainless steel (SS316L) and Inconel 718 (IN718) composition-graded material (CGM) additively manufactured by the direct energy deposition (DED) process. In order to prevent cracking in the CGM, thermodynamic analysis was performed to avoid the critical concentration for crack formation. Based on the local compositional detouring (LCD) method suggested by new approach, a crack-free CGM with a nonlinear combination of SS316L and IN718 was successfully fabricated with local additional elemental powder in the CGM defective region obtained using a multi-powder feeding system during the DED process.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

About the journal

Abstract

Keywords