HIGH-TEMPERATURE AXLE BEARING FORMED FROM NI₃(SI,TI) INTERMETALLIC COMPOUND ALLOY AND METHOD FOR PRODUCING SAME

摘要

Disclosed is an axle bearing that has an excellent lifespan at high temperatures. The high-temperature axle bearing is characterized by being formed from a Ni₃(Si,Ti) intermetallic compound alloy, which has a Vickers hardness of 210-280 at 800°C, and which has 25-500 ppm by mass of B with respect to the total mass of the composition of 100% of the atoms, including Ni as the primary component and 7.5-12.5% Si atoms, 4.5-10.5% Ti atoms, 0-3% Nb atoms, and 0-3% Cr atoms.