| Autor: |
McCoy, Chad A., Branch, Brittany A., Vackel, Andrew |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3066 Issue 1, p1-9, 9p |
| Abstrakt: |
Thermal spray (TS) processing of metals and metal blends is becoming increasingly attractive compared to conventional high temperature processes such as additive manufacturing and laser/electron beam deposition due to the process minimizing oxidation. Furthermore, microstructural features inherent to the spray process result in unique properties such as increased yield strength, low ductility, and differences in tensile and compressive strengths. Wrought and additively-manufactured tantalum have been extensively studied under dynamic compression over a range of pressures, but there has been little effort to understand the microstructural dependence of TS materials under dynamic compression. We report the results of spallation experiments applied to Cold Spray (CS, a kinetic deposition process) and Controlled Atmosphere Plasma Spray (CAPS, a melt deposition process) deposits of tantalum (Ta), niobium (Nb), and a tantalum-niobium blend (TaNb). Both techniques produce unique porous and stochastic microstructures, with CS resulting in a denser work-hardened material, whereas CAPS is less dense with a more lamellar microstructure. Postmortem materials characterization was conducted to investigate fracture mechanisms in CS and CAPS deposited materials. These results provide insight into the effects that TS microstructures have on dynamic performance compared to traditional manufacturing and higher temperature additive techniques. This provides a base for the development of structural component materials with unique mechanical properties. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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