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金属学报  2015 

高性能涡轮盘材料GH4065及其先进制备技术研究

DOI: 10.11900/0412.1961.2015.00368, PP. 1227-1234

Keywords: 镍基高温合金,盘形锻件,铸锻工艺,微观组织,力学性能

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Abstract:

在对一系列高合金化模型合金进行系统比选研究的基础上,发展了新型的GH4065变形高温合金,该合金化学成分与René88DT合金类似,并针对铸锻制备工艺的要求进一步实施了优化.研制结果表明,应用三联低偏析熔铸和多重循环热机械处理等新型技术生产的GH4065合金,适用于制备先进航空发动机关键热端转动部件,综合性能完全满足高压压气机盘和低压涡轮盘的工况要求,必要时可以作为高压涡轮盘的高可靠性、低成本解决方案.随着变形高温合金材料和制备工艺的发展,应用铸锻工艺制备的高性能涡轮盘材料能够满足先进航空发动机的技术要求.

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