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观察和研究了某些高温合金晶界γ′的贫化和富集及其形成原因,发现晶界γ′的贫化区和富集区的形成不仅与M_(23)C_6的析出相关,而且还与某些间隙相向M_(23)C_6的转变和某些金属间化合物的析出有关。
The depletion and enrichment of grain boundary γ ’at some superalloys and their formation were observed and studied. It is found that the formation of depleted and enriched regions of γ’ in the grain boundary is not only related to the precipitation of M 23 C 6, The transition of M_ (23) C_6 with some gaps is related to the precipitation of some intermetallic compounds.