This work is devoted to the preparation of alloys based on intermetallic compounds in Ti-Al-Si system by powder metallurgy using Self-propagating High-temperature Synthesis (SHS). Since samples after SHS are very porous, in order to reduce the porosity, a combination of SHS, milling, and Spark Plasma Sintering (SPS), has been here tested as a complex production technology. Selected mechanical properties of consolidated samples (hardness, fracture toughness) and tribological properties (abrasive wear resistance) were determined. The microstructure of compacted Ti-Al-Si alloys is almost non-porous with the combination of titanium aluminides and titanium silicides. The alloys achieve good mechanical properties except for the fracture toughness.

Combination of reaction synthesis and Spark Plasma Sintering in production of Ti-Al-Si alloys / Knaislová, A.; Novák, P.; Cabibbo, M.; Filip, Prusa; Paoletti, C.; Jaworska, L.; Vojtěch, D.. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - ELETTRONICO. - 752:5(2018), pp. 317-326. [10.1016/j.jallcom.2018.04.187]

Combination of reaction synthesis and Spark Plasma Sintering in production of Ti-Al-Si alloys

M. Cabibbo;C. Paoletti;
2018-01-01

Abstract

This work is devoted to the preparation of alloys based on intermetallic compounds in Ti-Al-Si system by powder metallurgy using Self-propagating High-temperature Synthesis (SHS). Since samples after SHS are very porous, in order to reduce the porosity, a combination of SHS, milling, and Spark Plasma Sintering (SPS), has been here tested as a complex production technology. Selected mechanical properties of consolidated samples (hardness, fracture toughness) and tribological properties (abrasive wear resistance) were determined. The microstructure of compacted Ti-Al-Si alloys is almost non-porous with the combination of titanium aluminides and titanium silicides. The alloys achieve good mechanical properties except for the fracture toughness.
2018
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/258645
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