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提高火电站发电效率,降低CO2排放量是解决目前能源和环境问题的重要途径,为此,世界发达国家致力于开发700℃超超临界锅炉电站。由于超超临界锅炉电站服役条件严苛,因此需提供合适的材料满足这一要求。617合金是700℃超超临界电站过热器和换热器管材的候选材料之一。对该合金的发展状况及其在组织稳定性、力学性能、抗氧化性、耐蚀性能和焊接性能等方面已有的研究进展进行了综合性报道并提出尚待解决的问题,以期为超超临界电站的选材提供借鉴并为该合金的进一步研究工作提供新的思路。
To improve the power generation efficiency of thermal power plants and reduce CO2 emissions is an important way to solve the current energy and environmental problems. Therefore, the developed countries in the world are devoted to the development of 700 ℃ ultra-supercritical boiler power station. Due to the harsh operating conditions of the ultra-supercritical boiler plant, suitable materials are required to meet this requirement. Alloy 617 is one of the candidate materials for superheater and heat exchanger tubes at 700 ℃. The development of the alloy and its stability in the organization, mechanical properties, oxidation resistance, corrosion resistance and welding properties of the existing research progress has been reported comprehensively and the unsolved problems, with a view to ultra-ultra The selection of the critical power station to provide reference for the alloy and further research work to provide new ideas.