About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Super-fast Fabrication of Micropillar Arrays Using Laser FIB Combination for More Statistically Relevant Micropillar Compression Tests |
Author(s) |
Fang Zhou, Tobias Volkenandt, Tim Schubert, Nicholas Randall, Timo Bernthaler |
On-Site Speaker (Planned) |
Fang Zhou |
Abstract Scope |
Micropillar compression tests are widely used to probe the uniaxial stress-strain response of materials such as metals and alloys. Micropillar arrays and pillars with various sizes are fabricated to have more statistically relevant testing. Conventionally micropillars are machined using FIB which is extremely time-consuming, and an irradiation-damaged layer is created by Ga implantation. Thus, fabrication of good quality micropillar arrays with great control over the size and location on a large test volume is so far hardly possible. In this work, an all-in-one LaserFIB solution is introduced to speed up the fabrication of micropillar arrays. A femtosecond laser is used to fabricate micropillar arrays over an area of hundreds of microns up to centimeters within minutes. Achievable pillar diameters are in the order of 50 microns. The machined micropillar arrays are deformed with a flat punch indenter to measure the individual stress-strain curves in a SEM. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, Other |