Selective Laser Melting Additive Manufacturing of TiC/AlSi10Mg Bulk-form Nanocomposites with Tailored Microstructures and Properties

By D. Gu, Hongqiao Wang, F. Chang, D. Dai, Pengpeng Yuan, Y. Hagedorn, Wilhelm Meiners. 2014

148 citations recorded by the source corpus.

Abstract The nanoscale TiC particle reinforced AlSi10Mg nanocomposite parts were produced by selective laser melting (SLM) additive manufacturing process. The influence of laser energy density (LED) on densification behavior, microstructural evolution, microhardness and wear properties of SLM-processed TiC/AlSi10Mg nanocomposites was studied. It showed that the near fully dense nanocomposite parts (>98% theoretical density) were achieved with increasing the applied LED. The TiC reinforcement in SLM-processed parts experienced a microstructural change from the standard nanoscale particle morphology (the average size 77-93 nm) to the relatively coarsened submicron structure (the mean particle size 154 nm) as the LED increased.The sufficiently high densification rate combined with the homogeneousdistribution of nanoscale TiC reinforcement throughout the matrix led to a high microhardness of 181.2 HV0.2, a considerably low coefficient of friction (COF) of 0.36, and a reduced wear rate of 2.94×10-5 mm3N-1m-1 for SLM-processed TiC/AlSi10Mg nanocomposite parts.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/8b5d5022c1fcb8db5cf8908c8204db90583d5974

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Citations in the corpus

3D printing of Aluminium alloys: Additive Manufacturing of Aluminium alloys using selective laser melting (2019, background): “[215,216] produced novel Al-based composites from AlSi10Mg and SiC with multiple reinforcements, yielding enhanced mechanical properties.”
Thermal behavior of the molten pool, microstructural evolution, and tribological performance during selective laser melting of TiC/316L stainless steel nanocomposites: Experimental and simulation methods (2018, unknown): “Similar observations were reported by Gu et al. (2014).”
A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties (2015, background): “Composite grains [39] are obtained via mechanically alloying consisting of the binder and the structural material within each individual powder grain with powder particles repeatedly milled, fract ured and welded together ( Fig.”