【摘要】 研究了P，S和B含量不同的IN718合金的蠕变性能结果表明，普通多晶体的蠕变存在补偿效应，微量元素通过影响表现蠕变激活能Q和指数前因子，从而影响稳态蠕变速率，各试验合金的Q与遵守补偿定律，式中常数Q0＝68．2kJ／mol，补偿温度Tc≈810℃，Tc可能接近于IN718合金δ相快速形成的临界温度更多还原

【Abstract】 The creep behaviors of IN718 based alloys with different contents of phosphorus, sulfur,and boron have been studied. It has been revealed that the compensation effect can also be observedin creep of the common polycrystals. Additions of the trace elements affect the creep activation energy,Q, and the pre-exponential factor, to, concurrently, and thus modify the steady-state creep rate,The interdependence between Q and of all the test alloys follows the compensation law,where the constant Q0=68.12 kJ/mol, the compensation temperature, which is closeto the critical temperature for fast formation of δ-phase, Tc≈810℃.更多还原