Authors:
In-Seo Kim (1), Ye-Eun Lee (1), Sung-Jae Jo (1), Jong-Un Moon (1), Ji-Woon Lee (1), Dae-Hyeon Kim (1), Vasudevan Rathinam (1), Hyoung-Seop Kim (2), Soon-Jik Hong (1)
1- Division of Advanced Materials Engineering and Center for Advanced Materials and Parts of Powder (CAMP2), Kongju National University, Cheonan, Republic of Korea
2- Pohang University of Science and Technology, Pohang, Republic of Korea
Abstract:
The effect of as-received (original) and recycled powders on the microstructure and mechanical properties of the STS 316L alloy manufactured using the direct energy deposition (DED) process was explored. The original and recycled powder formed around the additively manufactured material during the DED process was collected and used as starting materials. Two rectangular STS 316L specimens with dimensions of 30x30x20 mm3 were produced using original and recycled powders. The gas-atomized STS 316L powder possesses a spherical shape, and dendrite structure and pores were found in the recycled powder. STS 316L bulk alloy exists in the single-phase FCC crystal structure, and δ-ferrite residual was observed for the recycled powder. The tensile test revealed no significant difference in the maximum tensile strength for both original and recycled powder; however; there was a notable decrease of 50% in elongation for the as-built sample manufactured with the recycled powder.
DOI:
https://doi.org/10.59499/EP246282795
