High-Pressure Spark Plasma Sintering (HP SPS): A Promising and Reliable Method for Preparing Ti-Al-Si Alloys

被引:29
作者
Knaislova, Anna [1 ]
Novak, Pavel [1 ]
Cygan, Slawomir [2 ]
Jaworska, Lucyna [2 ]
Cabibbo, Marcello [3 ]
机构
[1] Univ Chem & Technol Prague, Dept Met & Corros Engn, Tech 5, Prague 16628, Czech Republic
[2] Inst Adv Mfg Technol, Wroclawska 37A, PL-30011 Krakow, Poland
[3] Univ Politecn Marche, DIISM, Via Brecce Bianche, I-60131 Ancona, Italy
关键词
high-pressure spark plasma sintering (HP SPS); powder metallurgy (PM); intermetallics; hardness; HIGH-TEMPERATURE SYNTHESIS; MECHANICAL-PROPERTIES; COMPOSITES; CONSOLIDATION; POWDERS;
D O I
10.3390/ma10050465
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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 degrees C) to 1597 K (1324 degrees C). The low-porosity consolidated samples consist of Ti5Si3 silicides in an aluminide (TiAl) matrix. The hardness varied between 720 and 892 HV 5.
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页数:8
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