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抗燃气腐蚀合金通过定向凝固提高高温强度具有重要的意义。本研究基于不同固溶和时效处理试验发现,固溶温度选择1180～1200℃、时效温度选择1070～1090℃,可获得最佳组织状态,初生γ′溶解充分、二次γ′析出最细小、间距最短、γ—γ′基本消除,可获得最高的持久性能数值。DZ-30合金的中温持久寿命比 Rene’80合金提高1倍,高温持久寿命提高1/3。
Anti-gas corrosion alloy by directional solidification to improve high temperature strength is of great significance. Based on the results of different solid solution and aging treatments, the results show that the best solution state is obtained when the solution temperature is 1180 ~ 1200 ℃ and the aging temperature is 1070 ~ 1090 ℃. The γ ’ The shortest distance, γ-γ ’basically eliminated, get the highest long-lasting performance value. DZ-30 alloy temperature life longer than Rene’80 alloy 1 times, high-temperature life expectancy increased by 1 /