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高锰高铝钢表面氧化的研究现状及展望

Research status and prospect of surface oxidation of high-Mn high-Al steel

  • 摘要: Cr-Ni耐热钢在航空航天、核电及汽车制造等领域虽应用广泛,但其高成本促使合金设计转向Mn-Al替代体系。新型高锰高铝钢兼具高强度与超塑性,为轻量化与高温设备制造提供新方案,然而,其生产过程中氧化铁皮控制问题也日益凸显。本文系统综述了高锰高铝钢在不同温度场和合金体系下的氧化动力学机制,归纳了氧化温度、合金成分、环境气氛及表面形貌等关键因素对氧化铁皮形成的影响规律。基于热力学分析和动力学建模,概述了表面处理、工艺优化及成分设计等控制策略。最后指出未来应重点关注变温氧化行为、多组元协同作用机制及氧化铁皮/基体界面相变等问题,为开发新一代高性能高锰高铝钢提供理论支撑。

     

    Abstract: While Cr-Ni heat-resistant steels remain prevalent in aerospace, nuclear energy, and automotive applications, escalating material costs have driven alloy innovation toward Mn-Al based alternatives. The emerging high-Mn high-Al steels demonstrate a remarkable combination of high-strength and super-plasticity, offering promising solutions for lightweight high-temperature equipment. However, challenges in oxide scale control during manufacturing processes have become increasingly critical. This review systematically investigates the oxidation kinetics of high-Mn high-Al steels across varying thermal gradients and alloy configurations, summarizing the critical impacts of oxidation temperature, alloy composition, ambient atmosphere, and surface topography on oxide scale formation. Through comprehensive thermodynamic analysis and kinetic modeling, we overview effective control strategies encompassing surface engineering, process parameter optimization, and compositional design. It finally points out that future research should focus on variable-temperature oxidation behavior, multi-component synergistic mechanisms and phase transformation at the oxide scale/substrate interface, providing theoretical support for the development of new-generation high-performance high-Mn high-Al steels.

     

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