About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
|
Presentation Title |
New Feedstock Design for Additive Manufacturing Using a Commercial Alloy Powder Mixture |
Author(s) |
Daozheng Li, Wei Xiong |
On-Site Speaker (Planned) |
Daozheng Li |
Abstract Scope |
Additive manufacturing (AM) is a powerful tool for alloy design and prototyping. However, the rapid heating and cooling cycle readily introduces texture with large columnar grains causing anisotropic properties and large residual stress, which significantly limits the application of the AM process over the traditional manufacturing methods. Therefore, there is an urgent need of discovering new alloys suitable for AM to reduce anisotropy in microstructure and properties. Through the ICME modeling and high-throughput characterization, a mixture of Stainless Steel 316L and Inconel 718 was designed using the laser powder bed fusion. After homogenization at high temperature, experimental observation confirms the expected phenomenon of grain refinement, which was identified in the same alloy mixture prepared by the directed energy deposition. Such grain refinement due to the hybrid effect of entropy, residual stress, and Zener pinning particles indicates a pathway of using commercial powder mixture to design new alloys for AM. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Entropy Alloys, ICME |