corrosion-resistant austenitic stainless steel alloy cast steel and heat-resistant high-temperature strength has been improved

摘要

Nickel content is corrosion resistant austenitic stainless steel cast steel alloy and heat of less than about 15%. When the creep test as they were cast by the test conditions of ASTM E139, the alloy 10 ^-3 smaller minimum creep rate 1 × creep rupture life exceeding 3000 hours at a temperature of 750 ℃ and stress 100MPa I have a door. Also, This alloy has a 0.2% yield strength of more than 130MPa at 750 ℃ ​​as they were cast, the decrease in 0.2% yield strength of up to 900 ℃ from 750 ℃ ​​is smaller than 20% , I have a microstructure of a fully austenitic after casting.