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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.
Proceedings Inclusion? Undecided


A High-throughput Method to Define New Feedstock Process Parameters in Additive Manufacturing
Additive Manufacturing Feasibility Investigation Using Single Track Study for the Fabrication of Borated Austenitic Stainless Steels via Laser Powder Bed Fusion
Development of Al-Ce Alloys for Additive Manufacturing Using the CALPHAD Method
Grain Boundary Engineering of 316L Stainless Steel via Laser Powder Bed Fusion
Insights into Additive Manufacturability and Microstructure Evolution from Simple Analytical Models
Solidification Cracking in Binary Al-Cu Alloys (1.5, 3.0, 4.5, 6.0, and 10 wt.% Cu) Additively Manufactured by Laser Powder Bed Fusion
Spherical Micro/Macro Indentation Stress-strain Curves for Additive Manufacturing Materials Design

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