镍基高温合金粉末制备技术的发展现状

粉末高温合金是先进航空发动机关键热端部件的优选材料，先进的粉末制备技术是获得高品质高温合金粉末、保证合金件质量的关键技术。近年来，我国在粉末高温合金的研发和生产技术方面都取得了突破性进展，成功研发出新一代粉末高温合金，形成了成熟的粉末高温合金生产工艺。在粉末制备技术方面，通过对高纯净母合金熔炼技术、先进雾化制粉技术和电选分离技术的深入研究，进一步发展了粉末纯净化制备技术，满足了我国航空发动机领域对粉末高温合金关键零部件的需求。简要回顾了国内外粉末高温合金的发展历程，分析了粉末高温合金中的缺陷来源及其对合金性能的影响，概述了我国镍基高温合金粉末制备技术的发展情况，讨论了未来高温合金粉末及其关键制备技术的发展方向。

Development in Powder Production Technology of Ni-Based Superalloy

P/M superalloy is the preferred material for critical hot sections of advanced aero-engine, advanced powder preparation technique is the key to obtain high-quality superalloy powder and ensure the quality of P/M superalloy. In recent years, breakthrough has been made on research and production of P/M snperalloy in China, the new generation P/M superalloy was successfully developed and the mature production process of P/M superalloy was formed. The pure powder preparation technology has been developed, which meets the requirements of P/M superalloy aero-engine key parts, through the in-depth research on high-purity master alloy smelting technology, advanced atomization technology and electric separation technology. This paper briefly reviewed the domestic and international development of P/M superalloy. The sources of defects in P/M superalloy and their impact on the property of the alloy were analyzed. Then, three key technol- ogies of superalloy powder production process were summarized. Lastly, the further development direction of superalloy powder preparation technology was discussed.