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DOI:
燃气轮机技术:2020,33(2):10-13
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GH4698合金在500 °C下裂纹扩展特性研究
(1.哈尔滨工业大学;2.哈电发电设备国家工程研究中心有限公司;3.北京航空航天大学)
Research on the Characteristics of Crack Growth ofGH4698 Alloy for Turbine Disk at 500 ℃
(1.Harbin Institute of Technology;2.Hadian Power Equipment National Engineering Research Center Company Ltd.;3.Beijing University of Aeronautics and Astronautics)
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中文摘要: 涡轮盘用GH4698合金材料断裂性能数据不足,难以支撑该材料用于燃气轮机涡轮盘损伤容限工程 设计。通过裂纹扩展试验研究,建立该材料在500 ℃下裂纹扩展模型,并进行数值模拟,验证模型的有效性, 为该材料用于燃气轮机涡轮盘损伤容限设计打下基础。
中文关键词: 燃气轮机  裂纹  损伤容限
Abstract:Engineering design for damage tolerance of turbine disk is not satisfied for the lack of fracture data of GH4698 alloy. Based on the experimental study of crack growth, a crack growth model of GH4698 alloy at 500 ℃ is established, that is verified by numerical simulation, which lays a foundation on design for damage tolerance of gas turbine disk using the material.
文章编号:     中图分类号:TK474.7;TK475    文献标志码:
基金项目:国家科技重大专项(2017-IV-0008-0045)
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[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.

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