About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
|
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
|
| Presentation Title |
High-Temperature Structural Integrity of Additively Manufactured Inconel 718 for Thermal Management Applications |
| Author(s) |
Zarin Tahsin, MohammadBagher Mahtabi, Aref Yadollahi, Scott Thompson |
| On-Site Speaker (Planned) |
Zarin Tahsin |
| Abstract Scope |
Next-generation compact heat exchangers operate under moderate stress levels while reaching temperatures as high as 1200 °C, placing stringent demands on the structural integrity of additively manufactured nickel superalloys. This study evaluates the tensile, creep, and rupture behavior of laser powder bed fused (L-PBF) Inconel 718 at 900 °C and 1200 °C within this service-relevant regime. Emphasis is placed on the role of build orientation, defect population, and microstructural stability in governing high-temperature performance. Results show that creep response is strongly influenced by orientation-dependent grain structure and defect distribution, with vertically built specimens exhibiting extended rupture life and improved resistance to damage accumulation. The findings demonstrate that creep behavior in this regime is governed by effective load-bearing capacity rather than localized defect severity alone. This work provides a physically grounded basis for assessing structural integrity and supports the qualification of L-PBF Inconel 718 for high-temperature thermal management systems. |
| Proceedings Inclusion? |
Undecided |