| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Powder Metallurgical Components in High Performance Applications
|
| Presentation Title |
Dispersing Tailored Nanoparticles through Powder Metallurgy Consolidation |
| Author(s) |
Bahrum Prang Rocky, Rofiques Salehin, Christopher R. Weinberger , Steve Daniewicz, Gregory B. Thompson |
| On-Site Speaker (Planned) |
Bahrum Prang Rocky |
| Abstract Scope |
While solid-state precipitation routes can readily yield a dispersion of nano-precipitates, the tailoring of such phases can be difficult owing to thermodynamic and kinetic precipitation conditions. In contrast, powder metallurgy (PM) consolidation can readily incorporate tailored nano-precipitates via specifically synthesized nanoparticles that are placed into the matrix. However, the uniform dispersion of such nanoparticles with micron-sized powders can be difficult. In this presentation, the fabrication routes for dispersing transition metal carbide (TMC) nanoparticles into ferrous matrix powders are discussed using various surfactants and/or high energy ball milling methods to identify the optimal mechanochemical techniques that provide a uniform TMC dispersion. The aim of which is to capture specifically tailored TMCs that are computationally predicted to trap hydrogen improving the strength and resistance to hydrogen embrittlement. The dispersion and PM processing routes are discussed in terms of consolidation, mechanical strength, and hydrogen charging/trapping potentials. |