| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
Modeling Hot Cracking in Metal Additive Manufacturing |
| Author(s) |
Eric Clough, Brennan Yahata, Mark O'Masta, Hunter Martin, Matt Begley |
| On-Site Speaker (Planned) |
Eric Clough |
| Abstract Scope |
Additive manufacturing has the potential to drastically alter the design and fabrication of metal parts by enabling complex geometries, and eliminating the need to develop expensive tooling. Unfortunately, the alloys that are currently printable via additive manufacturing preclude many engineering-relevant structural metals. A key reason that many of these structural metals are deemed unprintable is their tendency to crack while solidifying and cooling. Solidification conditions that tend to form crack-susceptible microstructures, combined with a limited ability to add filler-metal to compensate for solidification shrinkage, pose a significant challenge in additive manufacturing of alloys prone to hot cracking.
In this seminar we will present a multi-physics framework for simulating hot cracking accounting for fluid flow, solid mechanics, interfacial phenomena, and phase transformations. Through improved understanding of the mechanics of hot cracking, we aim to develop general concepts for mitigating hot cracks via optimal processing parameter selection and simulation-informed alloy design. |