About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
|
2023 Undergraduate Student Poster Contest
|
Presentation Title |
Development of a Novel Multi-laser Scan Strategy to Increase Density and Reduce Micro-Cracking in Additively Manufactured Tungsten |
Author(s) |
Cameron Scott Gygi, Emmaline Parker Hutchison |
On-Site Speaker (Planned) |
Emmaline Parker Hutchison |
Abstract Scope |
Additive Manufacturing (AM) has seen a substantial rise in popularity over the past decade due to its ability to combat weaknesses in conventional manufacturing methods, address supply chain gaps, increase design freedom, and reduce product development time. However, certain materials present difficulties for AM due to the interplay between their unique material properties and Laser Powder Bed Fusion’s (L-PBF) inherent laser welding processes. Tungsten is one such material; its refractory nature and proclivity to microcrack from built up thermal stress during L-PBF builds creates mechanical problems for manufactured parts. This study examines the effects of a multi-laser approach to mitigate the impact of thermal cycling on printed tungsten parts. Metallographic analysis of printed samples was conducted to track part density and microcracking across the builds. The use of a leading laser was observed to significantly increase part density and reduce microcracking in printed samples when compared to single laser builds. |