蔺永诚,陈小敏,陈明松.镍基合金的热变形行为及智能热加工技术研究进展[J].精密成形工程,2021,13(1):1-18.
LIN Yong-cheng,CHEN Xiao-min,CHEN Ming-song.Recent Development of High-temperature Deformation Behavior and Intelligent Processing of Ni-based Superalloy[J].Journal of Netshape Forming Engineering,2021,13(1):1-18. |
| 镍基合金的热变形行为及智能热加工技术研究进展 |
| Recent Development of High-temperature Deformation Behavior and Intelligent Processing of Ni-based Superalloy |
| 投稿时间：2020-10-10 |
| DOI：10.3969/j.issn.1674-6457.2021.01.001 |
| 中文关键词: 镍基合金 高温变形 微观组织 智能加工 |
| 英文关键词: nickel-based superalloy hot deformation, microstructure intelligent processing |
| 基金项目:国家重点基础研究发展计划(973)(2013CB035801);国家自然科学基金(51775564，51905048，51975593);湖南省科技人才托举工程(2020TJ-Q05) |
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| 中文摘要: |
| 镍基合金具有优异的高温强度，良好的抗疲劳、抗氧化和抗腐蚀性能，是目前航空航天领域内应用最为广泛的金属材料之一，已成为航空发动机热端部件不可替代的关键材料。镍基合金的高温变形抗力大、成形温度范围窄、微观组织演变复杂，给镍基合金零件的成形制造带来了巨大挑战。综述了近年来镍基合金的高温流变规律及建模、微观组织演变规律与建模、热加工工艺优化、热处理调优等方面的研究进展，讨论了镍基合金零件的智能加工技术发展现状，并展望了镍基合金及其零部件成形技术的发展趋势。获得如下重要结论:镍基合金的高温流变行为表征模型主要有唯象学本构模型、基于物理机制的本构模型和智能本构模型;镍基合金在塑性变形过程中的微观组织演变主要包括动态再结晶、亚动态再结晶、静态再结晶和晶粒长大行为;通过优化的锻后热处理工艺，可以减小组织的混晶程度;在镍基合金高温流变行为的本构描述与微观组织预测建模方面，还需深度挖掘成形工艺-微观组织-性能之间的映射规律，为镍基合金零件的高温成形工艺优化提供理论依据。 |
| 英文摘要: |
| Owing to their outstanding anti-fatigue, oxidation resistance and corrosion resistance at elevated temperatures, nickel-based superalloys have been widely applied as the critical materials in aerospace. It has become an irreplaceable key material for the hot end components of aeroengine. Because of the narrow deformation parameter ranges, large deformation resistance and complicated microstructure evolution during hot forming, it is a great challenge to exactly achieve the desired properties of nickel-based superalloy parts. The work reviewed research progress in hot deformation behavior and modeling, microstructure evolution and modeling, thermal processing process optimization and heat treatment optimization. Additionally, the development status of intelligent machining technology of nickel-based alloy parts was discussed, and the development trend of forming technology of nickel-based alloy and its parts was prospected. Some important conclusions are obtained, i.e., the phenomenological, physically-based and intelligent constitutive models can be used to describe the flow behavior of Ni-based superalloys. The dynamic, metadynamic and static recrystallizations, as well as the grain growth, often occur during the microstructure evolution of Ni-based superalloys. By optimizing the heat treatment processing, the mixed degree of the forged grain microstructures can be reduced. Still, for the accurate description of material flow behavior and microstructure evolution, the relationship between the processing, microstructures and properties should be further investigated to provide theoretical basis for optimizing high-temperature forming technology of nickel-based superalloy parts. |
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