| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advancements in Lightweight Composites, Materials & Alloys
|
| Presentation Title |
Aluminum Metal Matrix Composites for Electric Vehicle Powertrain Applications |
| Author(s) |
Xiao Li, Hrishikesh Das, Mayur Pole, Shane Kastamo, Adam Loukus, Jung Pyung Choi, Semanti Mukhopadhyay, Matthew J. Olszta, Aashish Rohatgi, Arun Devaraj, Glenn J. Grant, Darrell R. Herling, Mert Efe |
| On-Site Speaker (Planned) |
Aashish Rohatgi |
| Abstract Scope |
This talk presents two types of hybrid aluminum-TiB2 metal matrix composites (MMCs) for electric vehicle powertrain applications such as brake rotors, gears, and motors. Composites were produced by either liquid-phase or solid-phase processing routes. Liquid-phase route involved stir and squeeze casting, where submicron-sized TiB2 obtained from in-situ halide salt reactions were combined with micron-sized TiB2 powders. This allowed high volume fraction (up to 10 vol%) of total TiB2 and superior tribological properties in the MMCs compared to baseline and cast iron benchmarks tested under conditions relevant to the brake rotor application. Solid-phase route was based on friction consolidation of aluminum and TiB2 powders under high shear strains and temperatures, which enabled uniform distribution of 24 vol% submicron- and micron-sized TiB2 in the matrix. This resulted in significant improvements in elastic modulus, hardness, strength, and wear resistance of the composites, making them suitable to compete with steels in the structural applications. |