METHOD FOR HEAT TREATMENT OF CASTINGS FROM CARBON-FREE HEAT-RESISTANT NICKEL ALLOYS FOR MONOCRYSTALLINE CASTING

摘要

FIELD: metallurgy.SUBSTANCE: after homogenisation and two-stage ageing the proposed material is subject to additional treatment by heating to the temperature of 1100+10°C?T?(T- 10°C), where T- intensive dilution temperature of ?'-phase in the alloy, exposure at this temperature and cooling at the rate of not less than 50 deg/min.EFFECT: improving mechanical properties of casting products from carbon-free heat-resistant nickel alloys with monocrystalline structure.3 dwg, 1 tbl, 1 ex