About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Additive Manufacturing: Processing, Microstructure and Material Properties of Titanium-based Materials
|
Presentation Title |
Effect of Powder Feedstock Size on the Characteristics of Ti6Al4V Lightweight Features from Laser Powder Bed Fusion Additive Manufacturing: An Experimental Study |
Author(s) |
Sayed Ehsan Saghaian, Jonah Hermes, Li Yang |
On-Site Speaker (Planned) |
Li Yang |
Abstract Scope |
Due to the small characteristic dimensions, lightweight features such as thin walls and thin struts exhibit higher sensitivity to the powder feedstock characteristics. In this work, an experimental study was carried out to evaluate the effect of powder particle size on various characteristics of the lightweight features made of Ti6Al4V using laser powder bed fusion (L-PBF) process. Three different powder feedstock with different particle size distribution characteristics were used, and both thin wall and thin strut features of various characteristic dimensions were fabricated under different beam energy and scan speed combinations. Geometrical characteristics (e.g. dimension, surface roughness) and material characteristics (e.g. microstructure, porosity) of the fabricated features were analyzed systematically. The results aim to provide a preliminary knowledge base for the quality characteristics of Ti6Al4V lightweight features made by L-PBF and their dependency on the characteristics of the powder bed, which contributes to the design for L-PBF lightweight structure theory. |