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金属学报  1999 

IN718合金蠕变的补偿效应

, PP. 948-950

Keywords: 微量元素,蠕变,补偿效应,高温合金

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Abstract:

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.一无素通过影响表现蠕变激活能Q和指九前因子ε0,从而影响稳态蠕变速弯ε=ε0e-Q/RT,各度验合金的Q与ε0遵守补偿定律Q=RTclnε0+Q0,式中常数Q0=68.12kj/mol,补偿温度Tc≈810℃,Tc可能近皇IN718合金δ相快速形成的临界温度.

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