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发明授权
US4976791A Heat resistant single crystal nickel-base super alloy 失效
耐热单晶镍基超合金

Heat resistant single crystal nickel-base super alloy
摘要：
This invention relates to a heat resistant single-crystal nickel-base super alloy that possesses microstructural stability and excellent creep rupture strength and oxidation resistance. This alloy is composed of 4-9% chromium, 4-6.5% aluminum, 5-8.5% wolfram, 5-8.5% tantalum, 3-6% molybdenum, 0.01-0.30% hafnium, 0.02-4% cobalt by weight, and the balance of nickel and incidental elements and meets the conditional expression wolfram+tantalum
摘要（中）：

本发明涉及具有微结构稳定性和优异的抗蠕变断裂强度和抗氧化性的耐热单晶镍基超合金。 该合金由4-9％铬，4-6.5％铝，5-8.5％钨，5-8.5％钽，3-6％钼，0.01-0.30％铪，0.02-4％重量钴组成，以及 镍和偶然元素的平衡，满足条件表达式wolfram +钽<16％。 该合金的优选化学组成为约6.4％的铬，约5.1％的铝，约7.3％的钨，7.3％的钽，约4.3％的钼，约0.1％的铪，约1％的钴，余量的镍和 附带要素

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