About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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30 Years of Nanoindentation with the Oliver-Pharr Method and Beyond
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Presentation Title |
Process-structure-property-performance Relations for High-pressure Cold-sprayed Metals via Nanoindentation Stress-strain Measurements |
Author(s) |
Bryer Sousa, Jennifer Hay, Danielle L. Cote |
On-Site Speaker (Planned) |
Bryer Sousa |
Abstract Scope |
Comprehensive mechanical characterization of cold-sprayed metals is critical as they are increasingly used for solid-state additive manufacturing and repair. Nanoindentation is an attractive, high-throughput technique because it is suitable for small volumes and requires minimal sample preparation. In this work, an emergent nanoindentation method was applied to a range of high-pressure, cold-spray material consolidations made by systematically varied process parameters. The nanoindentation method used a flat-ended conical indenter to measure stress-strain curves and scalars derived therefrom, including yield stress and work-hardening exponent. We discerned processing-structure-property-performance relations for cold sprayed tantalum, steel, aluminum, and other material consolidations with these measurements. Before testing cold-sprayed metals, the flat-punch nanoindentation method was validated by comparing its stress-strain curves with uniaxial tensile curves and spherical nanoindentation curves for several different metals. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |