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| The Investigation on Cast Microstructures of NiCoCrAlY Alloy |
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Received:November 01, 2010
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| DOI：DOI：10.3969/j.issn.1007-7545.2011.01.013 |
| KeyWord:MCrAlY; Vacuum; Induction melting; Cast microstructures |
| Author | Institution |
| MA Yao |
北京矿冶研究总院 |
| YU Yue-guang |
北京矿冶研究总院 |
| YU Jun |
北京矿冶研究总院 |
| ZHANG Shu-ting |
北京矿冶研究总院 |
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| Abstract: |
| The NiCoCrAlY alloy ingot is prepared by vacuum induction melting. Then the cast microstructure is studied. The result shows that NiCoCrAlY cast alloy is mainly composed of four phases, namely γ-phase, γˊ-phase, Y-rich phase and eutectic β+γˊ. Y-rich phase is Ni3.55Co0.5Cr0.2Al0.75Y, surrounding γ phase in the form of mesh. β and γˊare (Ni,Co)Al and (Ni,Co)3Al respectively, and γˊphase is embedded in the β phase as cylindrical rods in the eutectic. |
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