Please click Additional Files below to see the full abstract

Behler, Kristopher D.

Blassino, Adolfo A.

Dunstan, Matthew K.

Large, Michael

Nault, Isaac M.

Thompson, Gregory B.

Weinberger, Christopher R.

English

Engineering Conferences International

COLD SPRAY DEPOSITION OF METALLIC-UHTC COMPOSITES   Michael J. Large, The University of Alabama, Tuscaloosa, AL 35487 USA mlarge@crimson.ua.edu  Isaac M. Nault, US Army DEVCOM ARL, Aberdeen, MD 21001 USA  Kristopher D. Behler, US Army DEVCOM ARL, Aberdeen, MD 21001 USA Matthew K. Dunstan, US Army DEVCOM ARL, Aberdeen, MD 21001 USA Adolfo A. Blassino, US Army DEVCOM ARL, Aberdeen, MD 21001 USA Christopher R. Weinberger, Colorado State University, Fort Collins, CO 80521 USA Gregory B. Thompson, The University of Alabama, Tuscaloosa, AL 35487 USA   Cold spray deposition is a process by which powder particulates are transported by supersonic velocities in a He gas stream towards a substrate. Upon impact, these powders ‘cold weld’ to form a consolidated, deposited layer. This process requires the powder particles to accommodate significant plasticity to achieve reasonable deposition efficiency; consequently, ceramics are not commonly fabricated through this route. In this work, a composite of Ta and TaC was achieved through cold spray deposition. By agglomerating Ta and TaC powders, the Ta metal was able to accommodate the necessary deformation to yield a composite cold spray deposition. The resulting composite structure has been characterized through electron backscattered diffraction to assess the grain size, grain boundary misorientation, and texture of the deposit as well as the TaC dispersion. Furthermore, electron diffraction methods have been applied to assess the deformation development that has occurred in the Ta phase. Through this characterization, the fundamental mechanisms that enable UHTCs to be deposited by cold spray deposition are being understood. This work is supported by ARO-W911NF-21-2-0084.    

Cold spray deposition of metallic-UHTC composites

https://dc.engconfintl.org/cgi/viewcontent.cgi?filename=0&article=1058&context=uhtc_v&type=additional

Cold spray deposition of metallic-UHTC composites

Abstract

Similar works

Full text

Available Versions

Engineering Conferences International