NI-AL INTERMETALLIC ALLOY AT THE THERMOCYCLING CONDITIONS

The contribution deals with structural and constitutional stability of intermetallic Ni-21.76 wt. % Al alloy during thermocycling at the tem perature range 773-1373 K. Metallurgically prepared samples were remel ted by the method of directional solidification and then thermocycled without outer applied stress during 25, 50, 100, 300 and 500 cycles in air.