摘要
研究了不同Ti含量对一种镍基单晶高温合金的铸态组织以及在1000℃长期时效后的组织演化。结果表明:随着Ti含量的增加,铸态组织中枝晶间区域面积以及枝晶间区域的γ/γ′共晶含量逐渐增加;长期时效后随着Ti含量的增加,筏形化程度越来越严重,逐渐有TCP相析出。
The microstructural evolution of a nickel-base single crystal superalloy with different content of titanium as-cast state and during prolonged aging at 1000℃ was investigated. The results showed that with the increase of titanium, the size and percentage of γ/γ＇ eutectic in interdendritic region increased obviously, at the same time, the area of interdendritic region was enlarged. During prolonged aging at 1000℃, the rafting level increased gradually with the increase of titanium. After 500h, TCP phase was not found in the three alloys; after 1000h with the increase of titanium, TCP phase precipitated gradually.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2006年第9期14-16,19,共4页
Journal of Materials Engineering
关键词
TI
单晶高温合金
长期时效
TCP相
titanium
single crystal superalloy； long-term thermal exposure
TCP phase
作者简介
刘丽荣（1976-），女，博士，从事单晶高温合金的组织和性能研究，联系地址：沈阳中科院金属研究所6室（110016）。
