研究目的
Investigating the microstructure development, tribological property, and underlying mechanism of laser additive manufactured submicro-TiB2 reinforced Al-based composites.
研究成果
The SLM-processed AlSi10Mg/TiB2 composites exhibit improved microhardness and wear resistance with increasing laser power, attributed to high manufacturing quality, microstructure homogeneity, and favorable interfacial bonding. The study demonstrates the potential of SLM for fabricating high-performance Al-based composites with uniform dispersion of ceramic reinforcements.
研究不足
The study is limited to the effects of laser power on the microstructure and tribological properties of AlSi10Mg/TiB2 composites. The influence of other processing parameters and higher TiB2 particle fractions are not explored.
1：Experimental Design and Method Selection:
Selective laser melting (SLM) of powder mixture under different laser powers.
2：Sample Selection and Data Sources:
AlSi10Mg powder and submicron TiB2 powder were used as starting materials.
3：List of Experimental Equipment and Materials:
Fritsch Pulverisette 6 planetary ball milling, SLM 150 HL device, D8 Advance X-ray diffractometer, NANO SEM 430 equipped with EBSD, FEI Tecnai G2F20 TEM, HXS-1000AY microhardness indenter, CFT-I wear test device.
4：Experimental Procedures and Operational Workflow:
Mixing of AlSi10Mg and TiB2 powders, SLM processing under different laser powers, microstructure characterization, microhardness and wear tests.
5：Data Analysis Methods:
XRD for phase analysis, SEM and TEM for microstructure examination, EBSD for crystallographic orientation analysis, microhardness measurements, and wear tests for tribological property assessment.
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