Aluminum is the key ingredient in low-density steels. It leads to the formation of δ-ferrite in a large fraction. In order to study the influence, two different experimental approaches were devised. In a first of its kind, the sample was arc melted in an argon atmosphere. Later, the same alloy composition was ball milled and sintered at 1000 °C by avoiding liquid to δ-ferrite in the system. In the current study, the comparative analysis led by DICTRA simulation indicates that kappa (κ) carbide has difficulty forming in the present alloy system when δ-ferrite is already available, particularly during solidification casting.

中文翻译：

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Fe-4Mn-9Al-0.3C Wt Pct低密度钢中δ-铁素体对形成K（κ）碳化物的动力学约束

铝是低密度钢的关键成分。这导致大部分形成δ铁素体。为了研究其影响，设计了两种不同的实验方法。首先，将样品在氩气气氛中电弧熔化。后来，通过避免系统中的液体变成δ铁素体，将相同的合金成分球磨并在1000°C下烧结。在当前的研究中，由DICTRA模拟进行的比较分析表明，当δ铁素体可用时，尤其是在凝固铸造过程中，卡伯（κ）碳化物在本合金系统中难以形成。