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为适应600℃左右长期使用于地面燃气轮机叶片的要求,研制和发展了GH133合金。 GH133合金是铁一镍一铬为基,以Ni_3(Al.Ti)型γ＇为主要强化相的高温合金,其特点是: 1.具有良好的长期组织稳定性。通过我国自行设计的铁基高温合金电子空位数计算并调整和添加合金元素,克服了某些铁基合金在600—650℃长期工作下会析出σ相而导致合金脆化的缺点。经650℃,6000小时长期时效后,没有σ相或其他脆性相析出。 2.具有良好的力学性能稳定性。经650℃,6000小时长期时效后,室温拉伸性能保
GH133 alloy has been developed and developed to meet the long-term requirements of ground gas turbine blades around 600 ℃. GH133 alloy is an iron-nickel-chromium-based, Ni_3 (Al.Ti) -type γ ’as the main strengthening phase of the high-temperature alloy, which is characterized by: 1. Has good long-term organizational stability. Through calculating and adjusting the electronic vacancies of the iron-based superalloy designed by our country, we can overcome the shortcomings that some iron-based alloys will precipitate σ phase during 600-650 ℃ long-term work, resulting in the embrittlement of alloy. After 650 ℃, 6000 hours long-term aging, no σ phase or other brittle phase precipitation. 2 has a good mechanical properties of stability. After 650 ℃, 6000 hours long-term aging, tensile properties at room temperature Paul