摘要
在Ni基单相(γ′)单晶合金拉/压屈服规律的基础上,对单晶叶片材料(γ′和γ两相)进行了分析。给出了一组能反映其屈服规律的力学表达式和分析程序,并用实验结果进行验证。
Based on the tension / compression yield behavior of nickel base single phase (r' ) single crystals, the yield behavior of single crystal blade superalloys (made of r' and r phases) has been studied. It is shown that the activation of octahedral slip systems is determined by LCP or PPV models and Schmid law down and up the tip temperature, respectively, and that of cube slip systems can be determined by Schmid law on certain precise degree. The tip temperature which is dependent on crystal orientations is relative to the activation of cube slip systems and the destruction of Kear-Wilsdorf dislocation mechanism. The yield laws and analytical procedures put forward in the paper are confirmed quantitatively by experimental results.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1993年第9期A556-A559,共4页
Acta Aeronautica et Astronautica Sinica
关键词
单晶叶片材料
单组单晶合金
屈服
Single crystal blade superalloy, single phase single crystal superalloy, tension / compression yield behavior, mechanical expressions
