Knaislová Anna, Novák Pavel, Cygan Sławomir, Jaworska Lucyna, Cabibbo Marcello
Department of Metals and Corrosion Engineering, University of Chemistry and Technology Prague, Technická 5, 16628 Prague, Czech Republic.
The Institute of Advanced Manufacturing Technology, Wroclawska 37A, 30-011 Krakow, Poland.
Materials (Basel). 2017 Apr 27;10(5):465. doi: 10.3390/ma10050465.
Ti-Al-Si alloys are prospective material for high-temperature applications. Due to low density, good mechanical properties, and oxidation resistance, these intermetallic alloys can be used in the aerospace and automobile industries. Ti-Al-Si alloys were prepared by powder metallurgy using reactive sintering, milling, and spark plasma sintering. One of the novel SPS techniques is high-pressure spark plasma sintering (HP SPS), which was tested in this work and applied to a Ti-10Al-20Si intermetallic alloy using a pressure of 6 GPa and temperatures ranging from 1318 K (1045 °C) to 1597 K (1324 °C). The low-porosity consolidated samples consist of Ti₅Si₃ silicides in an aluminide (TiAl) matrix. The hardness varied between 720 and 892 HV 5.
Ti-Al-Si合金是高温应用的潜在材料。由于密度低、机械性能良好和抗氧化性，这些金属间合金可用于航空航天和汽车工业。Ti-Al-Si合金通过粉末冶金采用反应烧结、球磨和放电等离子烧结制备。新型放电等离子烧结技术之一是高压放电等离子烧结（HP SPS），本工作对其进行了测试，并将其应用于Ti-10Al-20Si金属间合金，压力为6 GPa，温度范围为1318 K（1045°C）至1597 K（1324°C）。低孔隙率的固结样品由铝化物（TiAl）基体中的Ti₅Si₃硅化物组成。硬度在720至892 HV 5之间变化。
