超高速定向凝固K10合金组织与碳化物形态的变化

Abstract

Abstract:

The research is on the superfine column structures，change of carbonides，form and distribution of cobalt-base K 10 superalloy under superhigh speed directionalsolidification，with the help of a newly developed directional solidification equipmentwhich has a superhigh temperture gradient of 1000~1300K/cm ahead the solidifyingS/L interface.ExPerimontal results show that the directionally solidified superfinestructure consists of highly refined primary spacings and degenelated or even erasedside branches，the carbonides are directionally arrayed and carbonides' form changedfrom the islands' shape at general casting state to worms' form.

Key words: superhigh speed directional solidifioation, superalloy, superfine colomn struct-ure, carboniles form

Chu Shuang-jie;Li Jian-guo;Liu Zhong-yuan. THE SUPERFINE COLUMN STRUCTURE AND THE CHANGE OF CARBONIDES' FORM OF COBALT-BASE K10 SUPERALLOY UNDER THE SUPERHIGH SPEED DIRECTIONAL SOLIDIFICATION[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1992, 13(3): 236-239.

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THE SUPERFINE COLUMN STRUCTURE AND THE CHANGE OF CARBONIDES' FORM OF COBALT-BASE K10 SUPERALLOY UNDER THE SUPERHIGH SPEED DIRECTIONAL SOLIDIFICATION

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