About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys II
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Presentation Title |
Additive Manufacturing of Multi-principal Element Ni Alloys with Nanoprecipitates |
Author(s) |
Bo Yang, Benjamin Stegman, Zhongxia Shang, Jack Lopez , William Jarosinski, Xinghang Zhang |
On-Site Speaker (Planned) |
Xinghang Zhang |
Abstract Scope |
Multi-principal element (MPE) alloys have widespread industrial applications due to their high strength and radiation tolerance. Here we show that additive manufacturing can be employed to produce fully dense NiCrFe and NiCrW MPE alloys with nanoprecipitates. Scanning electron microscopy studies identified well aligned arrays of carbide nanoprecipitates along dislocation cell walls in NiCrW alloys. Transmission electron microscopy studies revealed that carbide nanoprecipitates formed several aligned orientation relationships with the matrix. In comparison, oxide nanoprecipitates formed in the NiCrFe MPE alloys. In situ tension studies showed the oxide nanoprecipitates improved the high temperature performance of the MPE alloys. These nanoprecipitates also changed the deformation mechanisms of MPE Ni alloys. This study suggests that additive manufacturing may open a new avenue to produce advanced MPE alloys for applications in extreme evironments. |
Proceedings Inclusion? |
Planned: |