Startseite Microstructural characterization and microhardness of rapidly solidified Al –Ce alloys
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Microstructural characterization and microhardness of rapidly solidified Al –Ce alloys

  • Zhonghua Zhang , Xiufang Bian und Yan Wang
Veröffentlicht/Copyright: 3. Januar 2022
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Abstract

The microstructures of rapidly solidified Al-8 Ce and Al-20 Ce (wt.%) alloys have been characterized. The phases present in as-spun alloys are identified to be α-Al and α-Al11Ce3, identical to those in the ingot-like alloys. The microstructure of as-spun Al-8 Ce alloy is fully composed of irregular and elongated α-Al cells with intercellular α-Al11Ce3. In as-spun Al-20 Ce alloy, however, some zones comprise columnar and irregular α-Al dendrites with interdendritic α-Al11Ce3 and other zones comprise irregular α-Al microdendrites with interdendritic α-Al11Ce3. Age hardening effect is not observed in the present alloys. The microhardness changes little with time when annealing below 300 °C but sharply decreases when annealing at 400 or 500 °C, indicating that the thermal stability of as-spun Al-8 Ce and Al-20 Ce alloys rapidly deteriorates above 300 °C.

  1. The authors gratefully acknowledge the support of the National Natural Science Foundation of China (No. 50071028) and the Shandong Natural Science Foundation of China (No. Z2001F02).

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Published Online: 2022-01-03

© 2002 Carl Hanser Verlag, München

Heruntergeladen am 17.11.2025 von https://www.degruyterbrill.com/document/doi/10.3139/ijmr-2002-0097/pdf
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