Fe-Mn-Al-C steels exhibit an outstanding combination of strength and ductility, and the addition of aluminum drastically reduces the density of steels. The low density also offers the advantage of lightweight structures compared with other alloys in practical applications. The addition of aluminum leads to an increased probability of κ-carbide precipitation, which would significantly affect the mechanical properties. This paper aims to review the κ-carbide in Fe-Mn-Al-C steels, including the structure, elastic and magnetic properties of κ-carbide, the precipitation mechanism of κ-carbide involving thermodynamic equilibrium, and the operative deformation mechanism of κ-carbide that governs the mechanical properties. It is hoped that such a comprehensive summarization of the knowledge of κ-carbide will be beneficial for the further development of low-density Fe-Mn-Al-C steels.

中文翻译：

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低密度Fe-Mn-Al-C钢中的κ碳化物：其结构，析出和变形机理的综述

Fe-Mn-Al-C钢表现出强度和延展性的出色组合，而铝的添加则大大降低了钢的密度。在实际应用中，与其他合金相比，低密度还具有轻质结构的优势。铝的添加导致κ碳化物沉淀的可能性增加，这将显着影响机械性能。本文旨在综述Fe-Mn-Al-C钢中的κ硬质合金，包括κ硬质合金的结构，弹性和磁性能，涉及热力学平衡的κ硬质合金的析出机理以及κ的有效变形机理。碳化物控制着机械性能。