Property recovering method for ni-base heat resistant alloy

Abstract From the Canadian patent

There is provided a property recovering method which can be applied to a high-temperature member whose properties such as strength and ductility have been deteriorated by the long-term use at a high temperature to recover its properties to those before the use enable its reuse, and contribute to the effective use of resources and the conservation of environment. A Ni-base heat resistant alloy having a particular composition whose properties have been deteriorated by heat history is subjected to first-stage solution treatment in which the alloy is held at a temperature of 1175 to 1225°C for 1 to 5 hours and then furnace-cooled then subjected to second-stage solution treatment in which the …