镍基单晶合金蠕变过程中的组织演变  

Microstructures Evolution of Nickel-based Single-crystal Alloy During Creep

作　　者：方玲玲[1] 王清玲[1] 

机构地区：[1]江西科技学院理科教学部,江西南昌330098

出　　处：《铸造技术》2015年第4期879-880,共2页Foundry Technology

摘　　要：研究了镍基单晶合金Ni-9.0Cr-5.0W-5.5Al-4.5Co-1.7Ti在蠕变过程中的组织演变。结果表明,热处理后,[011]取向镍基单晶合金为白色的γ基体相,其中以共格方式镶嵌着黑色的立方γ′相。蠕变前,立方γ′相沿<100>与[011]方向呈45°角规则分布;蠕变后,γ′相沿[001]取向呈筏状分布。The microstructures evolution of the nickel-based single-crystal alloy Ni-9.0Cr-5.0W-5.5AI-4.5Co-1.7Ti during creep was investigated. The results show that the white phase y is the matrix phase of [011]-oriented nickel-based single-crystal alloy after heating treatment and the black cubic phase γ′ is embedded with coherent mode. The cubic phase γ′ distributes regularly along the direction of 〈100〉 with 45° to the direction of [011] before creep, but the phase γ′ distributes alonlz the direction of [001].

关 键 词：镍基单晶合金 显微结构 蠕变试验机 

分 类 号：TG146.15[一般工业技术—材料科学与工程]