国外细晶铸造IN718压气机叶片组织结构分析  

Investigation of Microstructure of Fine Grain Cast IN718 Compressor Blade from Abroad

作　　者：马岳[1] 胡尧和[1] 谢锡善[1] 

机构地区：[1]北京科技大学材料工程学院,北京100083

出　　处：《北京科技大学学报》1997年第2期168-172,共5页Journal of University of Science and Technology Beijing

摘　　要：解剖、分析了国外细晶铸造IN718压气机叶片.结果表明：该叶片叶身部分的晶粒细小，晶粒度可达ASTM2～4级，无柱状晶，均为等轴晶，组织均匀、偏析轻，未见疏松等明显铸造缺陷，接近锻造叶片的组织结构，有望实现“以铸代锻”的目标.Fine grain cast IN718 compressor blade form abroad has been analyzed.There is no columnar grain, uniform equiaxed grain, less segregation and no Porosity cast defect in essence in the section of blade body with fine grain, in which grain size is about ASTM 2～4. Its microstructure is approachable to that of forging. It is hopeful to achieve the goal of replacing forging by casting.

关 键 词：细晶铸造 压气机 叶片 组织结构 高温合金 

分 类 号：TG249.9[金属学及工艺—铸造]