Investigation of Microstructure of Fine Grain Cast IN718 Compressor Blade from Abroad
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摘要: 解剖、分析了國外細晶鑄造IN718壓氣機葉片.結果表明：該葉片葉身部分的晶粒細小，晶粒度可達ASTM2～4級，無柱狀晶，均為等軸晶，組織均勻、偏析輕，未見疏松等明顯鑄造缺陷，接近鍛造葉片的組織結構，有望實現“以鑄代鍛”的目標.Abstract: 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.
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Key words:
- fine grain cast /
- compressor blade /
- microstructure
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