| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Alloy Design to Develop New Feedstock Materials III
|
| Presentation Title |
Spherical Micro/Macro Indentation Stress-strain Curves for Additive Manufacturing Materials Design |
| Author(s) |
Jordan S. Weaver, Patxi Fernandex-Zelaia, Houshang Yin, Xiaoyuan Lou |
| On-Site Speaker (Planned) |
Jordan S. Weaver |
| Abstract Scope |
High throughput experiments are needed for materials design in additive manufacturing. While combinatorial methods for materials design and optimization can produce samples with varying chemical compositions and microstructures, complimentary rapid mechanical test methods are lacking. This work focuses on instrumented spherical micro and macro indentation, which captures the elastic loading, elastic-plastic transition, and plastic flow; and how it can be used as a rapid surrogate test for uniaxial stress-strain curves. Indentation stress-strain curves will be presented on two conventional additive alloys (LPBF 316L stainless steel and EBM Haynes 282) with distinct microstructure variations (porosity and grain morphology, respectively) and compared against their uniaxial stress-strain curves. Outstanding measurement science issues that limit the use of surrogate indentation methods will be discussed. |