| About this Abstract | 
   
    | Meeting | 2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021) | 
   
    | Symposium | Special Session | 
   
    | Presentation Title | Composition-processing-properties Relationships for In Situ Reinforced Ti-B4C-BN Composites via Directed Energy Deposition | 
   
    | Author(s) | Kellen D. Traxel, Amit  Bandyopadhyay | 
   
    | On-Site Speaker (Planned) | Kellen D. Traxel | 
   
    | Abstract Scope | Composite material development via laser-based additive manufacturing offers many exciting advantages to manufacturers; however, a significant challenge exists in our understanding of process-property relationships for these novel materials. Herein we present our work on the effects of input processing parameters on a highly oxidation-resistant titanium matrix composite towards influencing the microstructure and properties for high-temperature applications.  By adjusting the linear input energy density, a composite feedstock of titanium-boron carbide-boron nitride (5wt% overall reinforcement) resulted in a highly reinforced microstructure composed of borides, carbides, and nitrides, with variable properties and oxidation performance depending on the overall input energy. Single-tracks and bulk samples were fabricated to understand the processing characteristics better and in situ reactions that occur during processing. Our results indicate that input processing parameters can play a significant role in microstructure formation and oxidation resistance of titanium matrix composites and can be exploited by manufacturers for improving component performance. | 
   
    | Proceedings Inclusion? | Definite: Post-meeting proceedings |