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发明授权
CN106521318B 一种高强度Fe-Mn-Al-C系低密度铸钢及其制备方法 有权

一种高强度Fe-Mn-Al-C系低密度铸钢及其制备方法
摘要：
本发明是一种高强度Fe‑Mn‑Al‑C系低密度铸钢。该材料的组成的化学质量百分为：0.05～0.35％的C、2.0～10.0％的Si、5.0～25.0％的Mn、3.0～12.0％的Al、0.1～0.8％的Cr、0.1～0.5％的Mo、0.1～1.2％的Ni、0.01～0.8％的V、0.01～0.08％的Nb、0.6～1.0％的Ti、0.01～0.5％的Re、S≤0.01％、P≤0.02％，其余为Fe和不可避免的杂质，并且还需同时满足如下关系：11％≤Si+Al≤20％、2C≤Nb+V+Ti≤3C。本发明的Fe‑Mn‑Al‑C系低密度钢基体组织为奥氏体，具有高强度的同时使钢具有良好的塑韧性，且具有良好的抗腐蚀性能，使其能够更广泛使用。
摘要（英）：

The invention relates to high-strength Fe-Mn-Al-C-series low density cast steel. The cast steel comprises, by mass, 0.05%-0.35% of C, 2.0%-10.0% of Si, 5.0%-25.0% of Mn, 3.0%-12.0% of Al, 0.1%-0.8% of Cr, 0.1%-0.5% of Mo, 0.1%-1.2% of Ni, 0.01%-0.8% of V, 0.01%-0.08% of Nb, 0.6%-1.0% of Ti, 0.01%-0.5% of Re, 0-0.01% of S, 0-0.02% of P, and the balance Fe and inevitable impurities. Moreover, the following relations of 11%<=Si+Al<=20% and 2C<=Nb+V+Ti<=3C need to be met at the same time. The matrix structure of the Fe-Mn-Al-C-series low density cast steel disclosed by the invention is austenite, and the steel can achieve good ductility and toughness while high strength is achieved; and moreover, the corrosion resistance is good, and the high-strength Fe-Mn-Al-C-series low density cast steel can be used more widely.

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