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发明公开
CN107841691A 一种750MPa级超高强度Fe-Mn-Al-C系轻质铸钢及其制备方法 有权

一种750MPa级超高强度Fe-Mn-Al-C系轻质铸钢及其制备方法
摘要：
本发明为一种750MPa级超高强度Fe-Mn-Al-C系轻质铸钢及其制备方法。该轻质铸钢的化学成分的重量百分数为：C：0.60～1.50％，Mn：10.00～14.00％，Al：6.50～12.00％，Si：0.50～1.50％，Ni：0.15～0.55％，Cr：0.15～0.45％，Cu：0.01～0.06％，Mo：0.10～0.60％，V：0.05～0.25％，Ti：0.05～0.35％，Nb:0.01～0.08％，Ce：0.001～0.010％，P≤0.008％，S≤0.008％，其余为Fe和不可避免的杂质。本发明具有非常好的强度、密度和塑性的配合，非常适用于制造汽车复杂结构铸件并且可以有效减轻汽车自重。
摘要（英）：

The invention provides 750MPa grade ultrahigh-strength Fe-Mn-Al-C series light cast steel and a preparation method of the 750MPa grade ultrahigh-strength Fe-Mn-Al-C series light cast steel. Accordingto the chemical components of the light cast steel, the 750MPa grade ultrahigh-strength Fe-Mn-Al-C series light cast steel comprises, by weight percentage, 0.60%-1.50% of C, 10.00%-14.00% of Mn, 6.50%-12.00% of Al, 0.50%-1.50% of Si, 0.15%-0.55% of Ni, 0.15%-0.45% of Cr, 0.01%-0.06% of Cu, 0.10%-0.60% of Mo, 0.05%-0.25% of V, 0.05%-0.35% of Ti, 0.01%-0.08% of Nb, 0.001%-0.010% of Ce, smaller thanor equal to 0.008% of P, smaller than or equal to 0.008% of S and the balance Fe and inevitable impurities. The 750MPa grade ultrahigh-strength Fe-Mn-Al-C series light cast steel achieves the cooperation of the quite high strength, the quite high density and the quite high plasticity, is quite suitable for manufacturing automotive complex structure castings and can effectively reduce the dead weight of an automobile.

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