摘要
研究了热处理工艺对ＤＤ８单晶高温合金组织及性能的影响，结果表明，经过１１００℃／８ｈＡ．Ｃ．＋１２４０℃／４ｈＡ．Ｃ．＋１０９０℃／２ｈＡ．Ｃ．＋８５０℃／２４ｈＡ．Ｃ的４级处理明显改善了ＤＤ８单晶合金元素的枝晶偏析，合金中γ相获最佳含量并形成适当尺寸配合，合金获得理想的综合性能。
The effect of heat treatment on the microstructure and properties of DD8 single crystal nickel-base superalloy was investigated. The results show that the combined properties of the alloy can be obtained by using the heat treatment as follows:1100℃/8h A.C.+1240℃/4h A.C.+1090℃/2h A.C.+850℃/24h A.C. This is because the segregation of the alloying elements can be improved, the optimum content of the γ-precipitated and the critical misfit between the γ/γinterfaces can be obtained through the heat treatment.
出处
《材料开发与应用》
CAS
1997年第1期27-33,共7页
Development and Application of Materials
关键词
单晶
高温合金
热处理
组织
持久性能
DD8 single crystal Superalloy Heat treatment Structure Rupture property
