镍基单晶高温合金涡轮叶片薄壁效应研究进展
Research Progress on Thin-Wall Effect of Nickel-Based Single Crystal Superalloy Turbine Blades
许瀚元 1黄太文 1艾诚 2苗琳琨 1张军 1刘林1
作者信息
- 1. 西北工业大学凝固技术国家重点实验室,陕西西安 710072
- 2. 长安大学材料科学与工程学院,陕西西安 710064
- 折叠
摘要
镍基单晶高温合金具有优异的高温综合性能,是航空发动机涡轮叶片和导向叶片等部件的首选材料,承受高温度和高应力的严苛服役环境.目前,高冷效叶片的结构设计中采用多种复杂冷却结构以提高其承温能力,其中以层板冷却和双层壁冷却为代表的微型冷却结构是其主流发展方向.但由于这类复杂涡轮叶片中存在超薄壁结构,已成为叶片制造的关键点和难点.本文综述了镍基单晶高温合金薄壁结构的发展趋势,分析了薄壁受限空间的缺陷产生及枝晶生长规律,阐述了薄壁结构对力学性能的影响,展望了先进涡轮叶片的制备及其组织控制的发展趋势.
Abstract
With outstanding comprehensive performance at high temperature,nickel-based single crystal superalloy is the preferred material for aero-engine turbine blades,vanes and other components to withstand challenging service environment subjected to high temperature and intense stress.At present,various complex cooling structures are often used in the design of high-efficiency cooling blades to enhance blade temperature tolerance.Among them the micro-cooling structure represented by lamilloy and double wall cooling are the main trend.However,the existence of ultra-thin wall structures in these complex turbine blades has become critical aspect and challenge in blade manufacturing.This paper provided an overview of the development trends in thin-walled structure of Ni-based single-crystal super alloys,analyzed the defects arising from thin-walled constrained space and the law of dendrite growth,elaborated the influence of thin-walled structure on mechanical properties and provided a prospect on advanced turbine blade preparation and development trend of its microstructure regulation.
关键词
镍基单晶高温合金/涡轮叶片/薄壁效应/力学性能/枝晶生长Key words
Ni-based single crystal superalloy/turbine blades/thin-wall effect/property/dendrite growth引用本文复制引用
基金项目
国家自然科学基金(52071267)
国家自然科学基金(52031012)
航空发动机及燃气轮机基础科学中心项目(P2021-A-Ⅳ-001-001)
两机专项(J2019-Ⅶ-0013-0153)
陕西省科技创新团队项目(2021TD-17)
江苏省科技计划重点研发计划(BE2022124)
苏州市科技计划姑苏创新创业领军人才计划(ZXL2022270)
常熟市"昆承英才"科技创新创业领军人才计划(CSRC22018)
出版年
2024
NETL
NSTL
万方数据