HIGH-TEMPERATURE AXLE BEARING MADE OF NI3(SI, TI)-BASED INTERMETALLIC COMPOUND ALLOY AND METHOD FOR PRODUCING THE SAME

摘要

The present invention provides an axle bearing having excellent life under high temperature.;The present invention provides a high-temperature axle bearing made of an Ni₃(Si, Ti)-based intermetallic compound alloy, wherein the Ni₃(Si, Ti)-based intermetallic compound alloy contains from 25 to 500 ppm by weight of B with respect to a total weight of a composition of 100 at. % containing Ni as a major component, from 7.5 to 12.5 at. % of Si, from 4.5 to 10.5 at. % of Ti, from 0 to 3 at. % of Nb, and from 0 to 3 at. % of Cr, and has a Vickers hardness from 210 to 280 at 800° C.