| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Presentation Title |
Directed Energy Deposition of Stainless Steel 304L to Inconel 625 Gradients: Print Strategies and Defects |
| Author(s) |
Anthony Stair, Jack Beuth, Bryan Webler, Maarten de Boer |
| On-Site Speaker (Planned) |
Anthony Stair |
| Abstract Scope |
The bonding of dissimilar metals via additive manufacturing can create structures with different properties based on the location withing the geometry of the component. Bonding of dissimilar metals is difficult due to formation of unintended intermetallic phases and mismatches in thermal properties like thermal conductivity, melting temperature, and coefficient of thermal expansion. By using process parameters to control the dilution of the stainless steel 304L build plate into the melt pool in single layer builds, we have avoided gross defects such as large voids, cracks, or deleterious phases. Tensile testing of specimens printed with a defect free parameter set showed that the gradient between the two materials was stronger than stainless steel 304L. Some unsuccessful experiments contained cracking. The compositions and build parameters of experiments which resulted in cracking are compared to those of experiments that did not crack to determine what the cause of the cracking is. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |