RT Journal Article
SR Electronic
A1 Knaislová, Anna
A1 Šimůnková, Vendula
A1 Novák, Pavel
A1 Průša, Filip
A1 Cygan, Sławomir
A1 Jaworska, Lucyna
T1 The Optimization of Sintering Conditions for the Preparation of Ti-Al-Si Alloys
JF Manufacturing Technology Journal
YR 2017
VO 17
IS 4
SP 483
OP 488
DO 10.21062/ujep/x.2017/a/1213-2489/MT/17/4/483
UL https://journalmt.com/artkey/mft-201704-0012.php
AB This work deals with optimization of Spark Plasma Sintering conditions for the preparation of Ti-Al-Si alloys. Ti-Al-Si alloys are appropriate material for high-temperature applications, especially for aerospace and automotive industry. They are characterized by low density, good mechanical properties and resistance against oxidation. Ti-Al-Si alloys were prepared by powder metallurgy using reactive sintering, followed by milling and Spark Plasma Sintering. Preparation of intermetallic compounds is complicated due to high melting points of intermediate phases, the exothermic reaction during their formation and high reactivity of the melt with melting crucible. TiAl10Si20 alloy was prepared by Spark Plasma Sintering under a pressure of 48 MPa and by High Pressure Spark Plasma Sintering under pressure of 6 GPa. The temperature was chosen between 1100 °C and 1204 °C. The porosity of TiAl10Si20 alloy decreases with pressure and with the high pressure also increases the hardness by 200 HV 5. Abrasive wear resistance of TiAl10Si20 alloy is very good.