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研究了一种新型高W变形高温合金中μ相的析出行为及其对合金室温、750和950℃拉伸性能的影响。结果表明,μ相在850～1150℃温度范围内的析出随温度升高先增加后降低,析出峰温度位于1000℃附近。μ相对合金拉伸性能的影响与温度有关,在750℃以下,μ相主要起第二相强化作用,提高合金抗拉强度,降低拉伸塑性;在950℃下,μ相的析出消耗较多固溶强化元素W,降低抗拉强度,提高拉伸塑性。
The precipitation behavior of μ phase in a new high-W wrought alloy and its effect on the tensile properties of the alloys at room temperature, 750 and 950 ℃ were investigated. The results show that the precipitation of μ phase in the temperature range of 850 ~ 1150 ℃ first increases and then decreases with the increase of temperature, and the temperature of precipitation peak is near 1000 ℃. The effect of μ relative alloy tensile properties is related to temperature. Below 750 ℃, the μ phase mainly plays the role of second phase strengthening to increase the tensile strength and reduce the ductility of the alloy. At 950 ℃, the μ phase precipitates more Solid solution strengthening elements W, reduce the tensile strength, improve the tensile plasticity.