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Title: Influence of ultrasonic treatment on the formation of primary Al3Zr in an Al-0.4 Zr alloy
Authors: Wang, F
Eskin, D
Connolley, T
Mi, J
Keywords: Ultrasonic treatment;Aluminium alloy;Primary Al3Zr intermetallic;Refinement;Crystal morphology
Issue Date: 2017
Publisher: Elsevier
Citation: Transactions of Nonferrous Metals Society of China, (2017)
Abstract: The effect of ultrasonic treatment on the formation of primary Al3Zr was investigated by applying ultrasound to an Al-0.4Zr alloy. Three temperature ranges were selected, i.e. 830 to 790 oC (above liquidus), 790 to 750 oC (cross liquidus) and 750 to 710 oC (below liquidus) for ultrasonication. Using the scanning electron microscopy, both the size and morphology of the primary Al3Zr particles were examined. It was found that the size was significantly reduced and the morphology changed from large throwing-star shape to small compact tablet shape. The mechanisms for refinement of primary Al3Zr are discussed in the light of literature.
ISSN: 1003-6326
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Embargoed Research Papers

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