Journal
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Volume 26, Issue 9, Pages 2296-2303Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(16)64348-0
Keywords
Al-Cu alloy; squeeze pressure field; power ultrasonic field; combined field; microstructure; microhardness
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Funding
- National Natural Science Foundation of China [51374110]
- Natural Science Foundation of Guangdong Province for Research Team, China [2015A030312003]
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The squeeze pressure field and power ultrasonic field were applied during the conventional casting process of Al-5.0Cu alloy simultaneously. The effects of individual squeeze pressure or power ultrasonic and their coupling on the microstructures and microhardness of Al-5.0Cu alloy were studied by optical microscopy, scanning electron microscopy, image analysis and micro Vickers hardness test. The results show that compared with the conventional casting, refined microstructures, homogeneous distribution of alpha(Al) and theta(Al2Cu) and improved microhardness can be obtained when squeeze pressure or power ultrasonic is applied individually. For the case of combined fields, both the treated region and the improvement of microstructure and properties can be enhanced.
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