| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Investigation of the Mechanical Properties in Additively Manufactured Haynes 230 Alloy with Hierarchical Microstructure |
| Author(s) |
Bo Yang, Zhongxia Shang, Jie Ding, Jack Lopez, Tianyi Sun, William Jarosinski, Yifan Zhang , Nicholas Richter, Haiyan Wang, Xinghang Zhang |
| On-Site Speaker (Planned) |
Bo Yang |
| Abstract Scope |
Laser powder bed fusion (L-PBF) has gained wide attention in the recent years owning its abilities to produce alloys in a near-net-shape manner and to introduce unique microstructure via rapid laser heating and quenching. Haynes 230 is a solid-solution-strengthening nickel-based superalloy with excellent corrosion resistance and high temperature mechanical properties. In this study, well-dispersed M6C carbide precipitates enriched with W and Mo, with an average particle size of ~100 nm, were introduced into Haynes 230 alloy by heat treating the L-PBF processed Haynes 230 alloy with dislocation cell walls. The nano-sized carbides align along <100> directions with an average spacing of 500 nm. The introduction of such structure significantly enhances the work hardening capability of the alloy and alters its deformation mechanism. Mechanical tests in both bulk and micro scales were used to investigate the mechanism for the improved mechanical properties and explore the potential in alloy engineering with L-PBF. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |