Ductility and the Skin Effect in High Pressure Die Cast Mg-Al Alloys

Autor:	Cameron Davidson, Amanda L Bowles, J R Griffiths
Rok vydání:	2013
Předmět:	Materials science business.product_category Casting (metalworking) Metallurgy Die (manufacturing) Skin effect Composite material Porosity business Ductility Indentation hardness Grain size Electron backscatter diffraction
Zdroj:	Magnesium Technology 2001
DOI:	10.1002/9781118805497.ch29
Popis:	The prominent microstructural features of high pressure die cast Mg-Al alloys are presented. The high pressure die cast Mg-Al alloys examined typically exhibit a finer grain size, a region near the casting surface termed the skin that has a finer structure, a distinctive band of porosity below the skin and a central region with a high fraction of large primary magnesium dendrites. Direct measurement of the as-cast grain size of AZ91D and AM60B has been obtained by EBSD analysis. The depth of the skin region in these alloys has been quantified by several techniques: microhardness traverses; the location of porosity bands; and the variation of the fraction of large primary a grains. The use of these features to define a skin depth is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2f74003565cc0f4beca0cd1a0f7c3878 https://doi.org/10.1002/9781118805497.ch29 Zobrazit plný text záznamu