| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Light Metal Technology
|
| Presentation Title |
Selective Laser Melting of a TiB2/Al-Cu-Mg-Ni-Sc Composite |
| Author(s) |
Chenglu Tang, Xiaoming Wang |
| On-Site Speaker (Planned) |
Xiaoming Wang |
| Abstract Scope |
Additive manufacturing offers opportunity to produce complex geometric components in the aerospace and automotive industries. In this study, an in-situ TiB2 decorated Al-Cu-Mg-Ni-Sc composite was fabricated using selective laser melting (SLM). The resulting composite is characterized by the homogeneously distributed micro/nano-sized TiB2 particles and the ultra-fine aluminum grains (~ 3 μm). The as-build composite shows an excellent yield strength of 370 MPa, surpassing that of its matrix alloy/composite, as well as other reported as-built Al-Cu-Mg alloys/composites by SLM. Further analysis reveals that the remarkable strengthening effects are derived from the bimodally distributed TiB2 particles, nano-sized intermetallic nanoparticles and intragranular nano-cellular networks. This work provides new understanding of the microstructure of in-situ TiB2 strengthened aluminum matrix composite and paves the way for commercialization of high strength 2XXX matrix composite by additive manufacturing. |