The Effect of Casting Temperature on the Fatigue Properties of Cast Nickel Aluminide Alloys
The results of high cycle fatigue tests at 650 deg C on several cast Ni sub 3 Al alloys are reported and compared with cast IN-713C. These alloys include IC-221M and several variations to the IC-221M composition. The effect of casting temperature is investigated using castings poured at three differ...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1991-09, Vol.A153 (1-2), p.520-524 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The results of high cycle fatigue tests at 650 deg C on several cast Ni sub 3 Al alloys are reported and compared with cast IN-713C. These alloys include IC-221M and several variations to the IC-221M composition. The effect of casting temperature is investigated using castings poured at three different temperatures spanning a 56 deg C range. The results show that IC-221M cast at the highest temperature has the best fatigue strength, exceeding that for IN--713C. In these alloys, crack initiation occurs at shrinkage microporosity and the effect of casting temperature on porosity is related to the observed differences in fatigue lives. |
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| ISSN: | 0921-5093 |