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CN108165830B 一种具有高塑性的镍基粉末高温合金及其制备方法 有权

一种具有高塑性的镍基粉末高温合金及其制备方法
摘要：
本发明涉及一种具有高塑性的镍基粉末高温合金，按重量百分比计，包括C 0.02％～0.04％，Co 18.5％～20.5％，Cr 11.5％～13.5％，Mo 3.5％～4.50％，W 0.8％～1.0％，Al 3.85％～4.15％，Ti 2.35％～2.65％，Nb 0.8％～1.2％，B 0.015％～0.025％，Zr 0.035％～0.045％，Hf 0.3％～1.5％，其余为Ni。同时，本发明还提供了一种具有高塑性的镍基粉末高温合金的制备方法。本发明通过调整合金中各个元素的含量，设计一种新型合金，本发明通过合金中各元素之间的相互作用，经过相应的热处理后，所制备得到的合金的强度和塑性达到较好的配合，与FGH4091合金相比，合金强度与FGH4091相当，而塑性大幅度提高，在760℃条件下进行对比，本发明合金的断面收缩率相对于FGH4091合金提高了至少64.5％。
摘要（英）：

The invention relates to a nickel-based powder high-temperature alloy with high plasticity. The alloy comprises of, by weight, 0.02%-0.04% of C , 18.5%-20.5% of Co, 11.5%-13.5% of Cr, 3.5%-4.5% of Mo,0.8%-1.0% of W, 3.85%-4.15% of Al, 2.35%-2.65% of Ti, 0.8%-1.2% of Nb, 0.015%-0.025% of B, 0.035%-0.045% of Zr, 0.3%-1.5% of Hf and the balance Ni. Meanwhile, the invention further provides a preparation method of the nickel-based powder high-temperature alloy with high plasticity. According to the invention, through interaction between elements in the alloy and after corresponding heat treatmentis carried out, the strength and the plasticity of the prepared alloy are better matched, compared with the FGH 4091 alloy, the alloy strength is equivalent to the strength of the FGH 4091 alloy, butthe alloy plasticity is greatly improved, and carrying out comparison under the condition of 760 DEG C, a cross section shrinkage rate of the alloy is improved by at least 64% compared with that of the FGH 4091 alloy.

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