Event Type:
MSE Grad Presentation
Date:
Talk Title:
Influence of Heterogeneous Particulate Reinforcements on Deformation and Damage in Aluminum Composites Formed by Reactive Additive Manufacturing
Location:
Guggenheim Room 246

Committee:

Prof. Josh Kacher - School of Materials Science and Engineering (advisor) 
Prof. Aaron Stebner - School of Materials Science and Engineering (co-advisor) 
Prof. Naresh Thadhani - School of Materials Science and Engineering 
Prof. Richard Neu - Woodruff School of Mechanical Engineering 
Prof. Ashley Spear - Department of Mechanical Engineering, University of Utah

Abstract

   Laser powder bed fusion (PBF-LB) enables the fabrication of complex parts, but aluminum alloys manufactured through this process remain susceptible to solidification cracking and anisotropic mechanical properties associated with columnar grain growth. Reactive additive manufacturing (RAM) is a method of promoting grain refinement and introducing reinforcement particles through in situ chemical reactions between reactive powder constituents during processing. However, incomplete reactions contribute to heterogeneous microstructures containing variations in particle size, shape, composition, and spatial distribution, which can influence deformation and fracture behavior. Understanding these effects is important for identifying potential damage initiation mechanisms and their effect on tensile properties. In this work, I investigated the relationships between heterogeneous reinforcement particles, deformation and fracture, and mechanical properties in Al-Ti-B₄C composites formed through RAM.

 

virtually via Teams:

Join: https://teams.microsoft.com/meet/248266455555984?p=93WUJ1utqZm4Pd8eD9

Meeting ID: 248 266 455 555 984

Passcode: zZ9Kw7aL