| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
Cyclic Deformation Behavior of Wire Arc Additively Manufactured Inconel 625 under Strain-Controlled Low Cycle Fatigue |
| Author(s) |
Yoshit Kumar Tiwari, Diya Mukherjee, Shivam Kumar, Shenglu Lu, Kaustav Barat, Manidipto Mukherjee, Himadri Roy, Ma Qian, Xiaobo Chen |
| On-Site Speaker (Planned) |
Yoshit Kumar Tiwari |
| Abstract Scope |
Inconel 625 (IN625), a nickel-based superalloy known for its high performance in harsh environments. The Wire Arc Additive Manufacturing(WAAM), a cost-effective 3D-printing method that shapes large metal parts, has expanded the processability and application spectrum of IN625. However, the fatigue properties of WAAM-processed IN625, especially under low cycle fatigue (LCF) conditions, remain underexplored. This research focuses on grain growth, texture evolution, and their effects on the cyclic deformation behavior of IN625 in both building direction (BD) and transverse direction. Fully reversed LCF tests were performed at strain amplitudes ranging from ±0.3% to ±0.8%. Samples in both orientations demonstrated cyclic hardening, particularly pronounced at higher strain amplitudes (0.3%–0.8%). The samples along BD (vertical) demonstrated peak stress saturation and higher fatigue life compared to the samples extracted from the transverse direction, likely due to process-induced columnar grain and texture formation. Failure behavior was investigated using post-deformation and fractured surface analysis. |