About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
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Presentation Title |
Additively Graded Materials for Thermal Management |
Author(s) |
Gianna M. Valentino, Sharon Park, Alex Lark, Mo-Rigen He, Kevin Hemker |
On-Site Speaker (Planned) |
Gianna M. Valentino |
Abstract Scope |
Extreme environment applications require high temperature structural materials, such as refractory metals, but their high density, manufacturing difficulties, and limited high temperature characterization inhibit their widespread use. Advances in additive manufacturing (AM) promise to be a game-changer in the fabrication and implementation of refractory-based components via near-net-shape processing. However, the characterization of refractory high temperature properties is rare, much less for those made via AM. Here we report on the development and optimization of AM processing parameters for tungsten and tantalum refractory alloys to obtain a deeper fundamental understanding of the AM structure-property relationships. Emphasis will be placed on characterizing the microstructure and high temperature mechanical performance, ultimately aimed at improving thermal modeling of AM refractories for high temperature applications. Although still in its infancy, a study to fabricate refractory graded materials is ongoing and the results will be discussed for thermal management. |