Evaluation of a New Low Thermal Expansion Creep Resistant Nickel-Based Alloy

For many large-scale systems such as land-based power generation and chemical processing facilities, stresses due to thermal expansion can become a significant consideration in system design. Additionally, differential thermal stresses result from materials such as ferritic steels used in conjunction with nickel-based superalloys. An experimental nickel-based alloy designed for low CTE (Coefficient of Thermal Expansion) has been evaluated for creep performance and is compared to other low CTE nickel-based alloys. The creep results of this new alloy compare favorably to other low CTE nickel-based alloys.