Porosity, hydrogen and bifilm content in Al alloy castings

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In Al alloy castings, it is often not microstructure, but entrained defects in the form of bifilms that dominate mechanical properties. To assess their effect, this study targets a new quantification of metal quality, measuring the lengths and number of bifilm defects as determined from the microstructural section of a reduced pressure test (RPT) sample. (C) 2011 Elsevier B.V. All rights reserved.


Original languageEnglish
Pages (from-to)3860-3865
Number of pages6
JournalMaterials Science and Engineering A
Issue number10-11
Publication statusPublished - 1 Apr 2011


  • Metal quality, Porosity, Aluminium, Bifilm