Development of Nickel-base Alloy Tube Materials for 700 ℃ Ultra Supercritical Boilers

The development and application of high-performance alloy tube materials are the core technology of the 700 ℃ ultra supercritical coal-fired power plant. Research situations and achievements of nickel-base alloy tube materials used in 700 ℃ ultra supercritical boiler of coal-fired power plant in abroad are introduced, which would give some helps to the technology development in this field in China.