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论证了吸热型碳氢燃料与高温合金相容性研究过程,设计了燃油与高温合金联合加热装置,测试了非钝化和钝化状态的GH625试件和GH3128试件在壁温为500~850℃时、经过燃油压力为3.5MPa、燃油温度为450~500℃、流速为1~5m/s浸渍后的力学性能和金相组织.试验结果表明:在燃料温度为500℃、试件温度为850℃时,GH3128试件结焦量少于GH625试件,GH3128试件的塑性应力下降40%、GH625试件的塑性应力下降60%.燃油浸渍时高温合金钝化后结焦量明显减少.
The research process of the compatibility between endothermic hydrocarbon fuel and superalloy was demonstrated. The fuel and superalloy joint heating device was designed. The non-passivated and passivated GH625 and GH3128 specimens were tested in the temperature range of 500 ~ The mechanical properties and microstructure after immersion at 850 ℃ and under the conditions of fuel pressure of 3.5MPa, fuel temperature of 450 ~ 500 ℃ and flow rate of 1 ~ 5m / s.The experimental results show that when the fuel temperature is 500 ℃, When 850 ℃, the amount of coke of GH3128 specimen is less than that of GH625 specimen, plastic stress of GH3128 specimen decreases 40%, plastic stress of GH625 specimen decreases 60%, and the amount of coke after passivation of fuel superoxide obviously decreases.