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本文研究了不同热处理工艺对GH33A高温合金在550℃时的低周疲劳寿命和循环变形行为的影响。结果表明,当应变范围△ε_l<1.2％时,采用双级时效工艺(B工艺)可获得最长的疲劳寿命;当应变范围△ε_l>1.2％时,采用标准热处理工艺可获得较长的疲劳寿命。热处埋工艺不同,合金的循环变形行为也不同。应根据具体构件的受力条件来制定合理的热处理工艺。以发挥合金的潜力.
In this paper, the effects of different heat treatment processes on the low cycle fatigue life and cyclic deformation of GH33A superalloy at 550 ℃ were studied. The results show that when the strain range △ ε_l <1.2%, the longest fatigue life can be obtained by using the two-stage aging process (B process), and when the strain range △ ε_l> 1.2%, the long-term fatigue can be obtained by the standard heat treatment process life. Buried at different heat treatment, alloy deformation cycle is also different. Should be based on specific components of the stress conditions to develop a reasonable heat treatment process. To play the potential of the alloy.