|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Multi-material Additive Manufacturing: Processing and Materials Design
||Development of High-performance 316L Stainless Steel Nanocomposites by Additive Manufacturing
||Bandar AlMangour, Dariusz Grzesiak
|On-Site Speaker (Planned)
Metal matrix nanocomposites(MMCs)possess excellent mechanical and thermal properties and thus possibly have a great potential for widespread use in the automotive and aerospace industries. The research objective is to develop a high performance 316L stainless steel reinforced with TiC or TiB2 nanoparticles fabricated by selective laser melting (SLM). The changes in the densification degree, phases, microstructure, and mechanical properties of components produced using different processing conditions were studied. The nanoparticles were homogenously dispersed and they formed nanoscale ring-like structures along the grain boundaries. In contrast to the SLM-processed unreinforced stainless steel part, the nanocomposites exhibited higher hardness and yield strength while showing low coefficients of friction and wear rates; this was owing to the combined effects of grain refinement and grain-boundary strengthening. We believe that MMCs fabricated by the alternative route of additive manufacturing is a promising method to produce cheaper components that fulfill the increasing demand for high performance applications.
||Planned: Supplemental Proceedings volume