| 摘要: |
| 镍基高温合金在高温环境下具有抗氧化性能好、力学性能优的特点，在火箭发动机、超燃冲压发动机等领域有着广泛的应用。增材制造技术以其“近净成形”的优势，可实现传统加工方式难以实现的含流道、薄壁等复杂结构件的成形，进一步推动了镍基高温合金在航天领域的应用。本文以增材制造技术研究最透彻的GH4169/IN718为例，概括了增材制造镍基高温合金的力学性能、微观组织特征，总结了增材制造高温合金在航天领域的应用进展。 |
| 关键词: 增材制造 高温合金 微观组织 力学性能 应用进展 航天领域 |
| 基金项目: |
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| Additive Manufacturing Technologies of Nickel-based Superalloys and Their Application in Aerospace |
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Zhang Ningbo Wen Sihan Zhang Jingqi Gao Peng Kang Li Li Qijun Lyu Hongjun
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Aerospace Research Institute of Materials & Processing Technology, Beijing 100076
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| Abstract: |
| Nickel-based superalloys are widely used in rocket engines, scramjet engines and other aerospace fields since excellent oxidation resistance and beneficial mechanical properties in high-temperature environment. Due to the advantage of near-net-shape forming, additive manufacturing technology can realize the fabrication of components with complex structures such as coolant channel and thin walls, which are difficult to process by conventional methods. The emergence of additive manufacturing technology has further boosted the application of nickel-based superalloys in the aerospace field. The GH4169/IN718 alloy, which is the most thoroughly researched the superalloys, is used to summarize the microstructure and mechanical property characteristics of the nickel-based superalloys manufactured by the additive manufacturing technology. In addition, recent applications of the superalloys manufactured by the additive manufacturing technology in the aerospace have been outlined. |
| Key words: additive manufacturing superalloy microstructure mechanical properties application progress aerospace |
