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本文研究了Ｋ４１７合金的细晶铸造热工艺参数。研究结果表明，当型壳温度控制在９００～１０００℃，浇注温度控制在Ｐ＋２９℃～ｐ＋５０℃时，可获得健全的Ｋ４１７细晶铸件。与普通铸件相比，其低周疲劳寿命提高２～３倍。
In this paper, the heat treatment parameters of K417 alloy are studied. The results show that when the shell temperature is controlled at 900 ~ 1000 ℃ and the pouring temperature is controlled at P + 29 ℃ ~ p + 50 ℃, the fine K417 fine grain castings can be obtained. Compared with ordinary castings, its low cycle fatigue life increased by 2 to 3 times.