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发明公开
CN108796308A 一种裂纹敏感性低、低密度、高强度镍基高温合金 有权

一种裂纹敏感性低、低密度、高强度镍基高温合金
摘要：
本发明涉及高温合金零部件增材制造及修复领域，具体为一种裂纹敏感性低、低密度、高强度镍基高温合金，该合金主要适用于高温合金零部件修复及中低温高温合金部件的增材制造。该合金组成成分构成和各成分的质量含量满足下述要求：Cr：9.0～11.0％，Co：9.0～11.0％，Mo：4.0～6.0％；Nb：3.0～5.0％，Al：3.0～5.0％，Ti：0.5～2.0％，Si：0～0.6％，C：0～0.02％，Hf：0.1～0.6％，其余为Ni。该合金不仅制备过程中裂纹敏感性低，还具有低密度、低成本、中低温强度高、抗氧化性优良等特点，适于增材制造高温合金零部件及修复高温合金零部件。
摘要（英）：

The invention relates to the fields of high-temperature alloy part additive manufacturing and repairing, in particular to a nickel-based high-temperature alloy with the low crack sensitivity, low density and high strength. The alloy is mainly suitable for high-temperature alloy part repairing and medium-low-temperature high-temperature alloy part additive manufacturing. The alloy comprises, by mass, 9.0%-11.0% of Cr, 9.0%-11.0% of Co, 4.0%-6.0% of Mo, 3.0%-5.0% of Nb, 3.0%-5.0% of Al, 0.5%-2.0% of Ti, 0%-0.6% of Si, 0%-0.02% of C, 0.1%-0.6% of Hf and the balance Ni. The alloy not only is low in crack sensitivity in the preparation process, but also has the characteristics of being low in density and cost, high in medium-low-temperature strength and excellent in oxidation resistance, and issuitable for high-temperature alloy part additive manufacturing and repairing.

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