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Title: Refinement of the grain size of the LM25 Alloy (A356) by 96Al-2Nb-2B Master Alloy
Authors: Bolzoni, L
Hari Babu, N
Keywords: Al alloys;Grain refinement;Heterogeneous nucleation;Solidification;Nb-B inoculation
Issue Date: 2015
Publisher: Elsevier
Citation: Journal of Materials Processing Technology, 2015, 222, pp. 219 - 223 (5)
Abstract: This study deals with the grain refinement of the LM25 alloy by means of the addition of a 96Al-2Nb-2B master alloy. Nb-based intermetallics contained in the master alloy act as potent heterogeneous nucleation substrate for the nucleation of primary Al dendrites. The addition of the 96Al-2Nb-2B master alloy to the LM25 alloy permits to significantly refine its microstructural features and the refinement is achieved in a great range of cooling rates. The formation of columnar grains at slow cooling rates is prevented.
ISSN: 1873-4774
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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