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发明公开
CN108677104A 一种稀土饵变质增韧高硬度合金及其铸造方法 无效 - 撤回

一种稀土饵变质增韧高硬度合金及其铸造方法
摘要：
一种稀土饵变质增韧高硬度合金及其铸造方法，合金各元素的质量百分含量为Cr：9.0～13.0，B：2.6～2.9，C：0.7～0.9，Nb：0.4～0.8，V：0.4～0.8，Mn的含量小于0.3，Er：0.02～0.6，S、P：≤0.01，余量为Fe。其中C、B总和：3.3～3.6；C/Cr质量比：0.06～0.08；Nb、V的总和为0.5～1.0。首先准备好Fe‑Er2O3粉末压块，将合金配料、熔炼与变质处理后浇铸合金。本发明铸锭整体硬度HRC66.5～69.6，冲击韧性达到12.5～16.3J/cm2，抗弯强度达到1260～1662MPa。
摘要（英）：

Disclosed are rare earth bait modified and toughened high-hardness alloy and a casting method thereof. The alloy comprises, by mass, 9.0-13.0% of Cr, 2.6-2.9% of B, 0.7-0.9% of C, 0.4-0.8% of Nb, 0.4-0.8% of V, less than 0.3% of Mn, 0.02-0.6% of Er, 0.01% or less of S and P, and the balance Fe, wherein the total content of C and B is 3.3-3.6%, the mass ratio of C to Cr is 0.06-0.08, and the totalcontent of Nb and V is 0.5-1.0%. Firstly, Fe-Er2O3 powder briquettes are prepared, and after alloy burdening, smelting and modifying treatment, the alloy is cast. According to a cast ingot, the globalhardness is HRC66.5-69.6, the impact toughness reaches 12.5-16.3 J/cm<2>, and the bending strength reaches 1260-1662 MPa.

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