研究了316不锈钢在333—573K不同疲劳温度及不同应变振幅下热照射疲劳中的硬化行为,结果表明:在振幅E=1.17×10~(-4)下,热照射在333—573K温区内疲劳过程中,有大小几乎相同的软化产生;在(2.05—4.39)×10~(-4)应变振幅范围内,在333—503K温区内,热照射疲劳过程中出现软化,而在503—573K温区内,热照射疲劳过程中软化转变为硬化,此种由热照射引发的硬化所出现的疲劳温度随疲劳应变振幅的加大而提高。
The softening of stainless steel 316 of non--detectable difference in magnitude induced by thermal pulse was found during fatigue with strain amplitude of 1.17×10~(-4) in temperature range of 333--573 K. And it occurred if the measurements of fatigue with thermal pulse were performed in range of 333--503 K. However, it will become of the hardening in range of 503--573 K. The temperature, at which hardening of the steel induced by thermal pulse emerges in fatigue process, increses with the increasing in strain amplitudes.
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