(中國科學院 金屬研究所，沈陽110016)
摘 要: 評述了中國科學院金屬研究所高溫合金和金屬間化合物研究組50年來對鐵基和鎳基高溫合金相變的主要研究結果：包括凝固過程中發(fā)生的相變，如L→γ＋Laves，L→γ＋γ¢，L→γ＋M3B2；沉淀反應，過飽和γ固溶體中析出GCP相、碳化物和硼化物、硅化物、TCP；γ¢相中的沉淀析出和MC碳化物的分解反應。
關鍵字: 高溫合金；相變；凝固相變；沉淀反應；MC分解反應
Fe- and Ni-base superalloys
（Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China）
Abstract:The studies of Superalloy and Intermetallic Group of Institute of Metal Research in the past fifty years on the phase transformation phenomena in Fe- and Ni-base superalloys were reviewed. The phase transformations in the two kinds of superalloys include: the solidification reactions which occur during the solidification, e.g. L → γ + Laves, L → γ + γ ' and L → γ + M3B2; precipitation of carbides, borides, silicides, GCP and TCP phases from the supersaturated γ solid solution; precipitation reactions which occur in the γ ' phase; and the decomposition reactions of MC carbides.
Key words: superalloy; phase transformation; solidification reaction; precipitation reaction; MC decomposition reaction
