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在对位错塞积进行修正连续介质分析的基础上,考虑了位错塞积造成的应力集中,详细讨论了空洞系统Gibbs 自由能的变化,得出了高温合金蠕变空洞新临界形核半径.结果表明:它比Raj 模型应用范围更广.
Based on the modified continuous media analysis of the dislocation plugging product, the stress concentration caused by the dislocation plugging is taken into account. The Gibbs free energy change of the hollow system is discussed in detail. The new critical nucleation radius The results show that it is more widely used than the Raj model.