摘要
研究了Ｋ４０５高温合金精铸涡轮叶片断裂失效的性质与原因。结果表明，叶片制造过程中表面遭受Ｂｉ－Ｓｎ低熔点合金污染，在使用温度与拉应力作用下出现脆性开裂，从而导致早期疲劳断裂失效。
This paper represents the characteristics and cause for the fracture failure on the turbine blade,which is made of K405 Ni-base superalloy.The results show that the blade fatigue failure is due to the embroilment,which is induced by the contamination of Bi-Sn low melting point alloy on the blade surface during the manufacturing process of blade,under the effects of the service temperature and stress.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1996年第9期42-44,30,共4页
Journal of Materials Engineering
