About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Fatigue and Fracture: Effects of Surface Roughness, Residual Stress, and Environment
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Presentation Title |
Effects of Heat Treatment on Microstructure of Nickel Silicide Beads Additively Manufactured Using Direct Energy Deposition Technique |
Author(s) |
Ibrahim Mohammad, Geir Grasmo, Ragnhild Elizabeth Aune, Foysal Kabir Tareq |
On-Site Speaker (Planned) |
Foysal Kabir Tareq |
Abstract Scope |
Nickel silicides are well known for their attractive chemical and physical properties, but inadequate room temperature ductility makes them challenging to cast/forge. As Additive Manufacturing (AM) techniques are rapidly evolving to meet the demands of various industries, it is hoped that they can take advantage of the unrivalled opportunities that nickel silicides offer. However, the thermal history of parts produced by AM is quite complex and can lead to micro-cracking due to rapid solidification along with repeated heating and cooling cycles. Based on this, the present study has sought to investigate the effects of heat treatment on printed beads. The Direct Energy Deposition (DED) technique was used to print single beads of the NiSi16 alloy onto a steel substrate, followed by heat-treatments at 4000C, 7000C, and 10000C. The beads were analyzed using OM, SEM, EDS, XRD, and EPMA, and the results discussed in view of the presence of micro-cracking. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, High-Temperature Materials |