| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Sustainability of High Temperature Alloys
|
| Presentation Title |
Evaluation of Forming Stability and Crack Resistance in Inconel 718 Under Heat Treatment Conditions in Hot Forging Processes |
| Author(s) |
Ji Seob An, Seung-Hyun Yeo, A-Ra Jo, Myeong-Sik Jeong, Jong-Sik Kim, Sunkwang Hwang |
| On-Site Speaker (Planned) |
Ji Seob An |
| Abstract Scope |
Inconel 718 is a superalloy widely used in the aerospace and turbine industries due to its excellent oxidation resistance, high-temperature strength, and fatigue resistance. It forms γ'', γ', and δ phases, where γ'' and γ' contribute to strength and creep resistance, while δ controls γ'' precipitation, improving formability and preventing cracking. This study utilized the Crack Susceptibility Index (CSI) to evaluate crack formation during hot forging and the Strain Induced Crack Opening (SICO) test to assess crack resistance. CSI values obtained under different heat treatment conditions were compared with finite element analysis and experimental results from the SICO test to identify optimal heat treatment conditions that can delay cracking. Additionally, SICO test results and microstructural changes were analyzed to provide insights into how phase control influences the formability and crack resistance of Inconel 718. These findings offer valuable guidelines for optimizing heat treatment in industrial applications. |
| Proceedings Inclusion? |
Planned: |