摘要
本研究中对GH4169高温合金的疲劳裂纹扩展性能进行了试验研究.主要进行了400℃～600℃范围内的疲劳裂纹扩展试验,其中对GH4169环形锻件进行了室温下的疲劳裂纹扩展试验.结果表明,在400℃～600℃范围内,温度对GH4169高温合金疲劳裂纹扩展性能的影响很小,随温度上升,裂纹扩展速率稍有加快;优质成分对GH4169高温合金的疲劳裂纹扩展性能几乎没有影响,在相同温度下,YZGH4169与GH4169的疲劳裂纹扩展速率几乎一样;材料品种对YSGH4169高温合金的疲劳裂纹扩展性能有一定影响,YSGH4169锻件比棒材的疲劳裂纹扩展性能要好一些.
An experimental study on the fatigue crack growth of GH4169 superalloy has been carried out. The temperature range of fatigue crack tests is between 400℃and 600℃. Fatigue crack growth tests of annular forge piece of GH4169 have been made at the normal temperature condition. Test results show that the effect of temperature on fatigue crack growth of GH4169 is very small between 400℃and 600℃. The fatigue crack growth rate increases slightly with temperature raise. High-grade components do not change the fatigue crack growth of GH4169. The fatigue crack growth rate of YZGH4169 superalloy is almost the same as GH4169 at the same temperature. However the forging technology has some influence on the fatigue crack growth of YSGH4169 superalloy. YSGH4169 forgings have a better growth rate than rods.
出处
《燃气涡轮试验与研究》
2004年第4期5-8,共4页
Gas Turbine Experiment and Research
