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发明公开
CN109234553A 一种Al-Zr-Sc-B耐热合金单丝及其制备方法 审中-实审

一种Al-Zr-Sc-B耐热合金单丝及其制备方法
摘要：
本发明提供了一种Al-Zr-Sc-B耐热合金单丝及其制备方法，合金单丝由下述重量百分比的合金元素制成：B：0.01～0.02％，Zr：0.01～0.05％，Sc：0.05～0.2％，Si:≤0.08％，Fe:≤0.2％，(V+Ti+Cr+Mn)≤0.012％，余量为铝和不可避免的其它杂质。该合金添加Zr元素的同时还添加了微量稀土Sc元素对合金进行改性并优化调整合金元素含量，保证了合金力学性能，提高了导电率，20℃下的单丝导电率≥62％IACS、抗拉强度≥170MPa、延伸率为2.5％、230℃保温1h强度残存率≥93％、满足了长期运行温度为150℃的要求。
摘要（英）：

The invention provides an Al-Zr-Sc-B heat-resisting alloy monofilament and a preparation method thereof. The alloy monofilament is prepared from the following alloy element in percentage by weight: 0.01 to 0.02 percent of B, 0.01 to 0.05 percent of Zr, 0.05 to 0.2 percent of Sc, less than or equal to 0.08 percent of Si, less than or equal to 0.2 percent of Fe, less than or equal to 0.012 percent of (V+Ti+Cr+Mn) and the balance of aluminum and unavoidable other trace impurities. The Zr element is added into an alloy; a trace rare-earth Sc element is added to modify the alloy and the content ofthe alloy elements is optimized and adjusted, so that the mechanical properties of the alloy are ensured and the electric conductivity is improved; and the electric conductivity of the monofilament isgreater than or equal to 62 percent IACS at 20 DEG C, the tensile strength is greater than or equal to 170MPa, the elongation percentage is 2.5 percent, the strength survival rate is greater than orequal to 93 percent when the monofilament is subjected to heat insulation at 230 DEG C for 1h, and the requirement that the long-period operation temperature is 150 DEG C is met.

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