MANUFACTURING METHOD OF ALLOY 690 WITH A HIGHER RESISTANCE TO STRESS CORROSION CRACKING AND ALLOY 690 MANUFACTURED USING THE METHOD THEREOF

摘要

The present invention relates to a production method for an alloy 690 ordered alloy with improved resistance to stress corrosion cracking, which is used to a heat transfer pipe of a steam generator used as a heat exchanger of a nuclear power plant, and an alloy 690 ordered alloy produced thereby. The production method for an alloy 690 ordered alloy with improved resistance to stress corrosion cracking comprises: a step of cold-working alloy 690; and a step of ordering the cold-worked alloy 690 at a temperature of 400 to 520°C.