The deformation and fracture behaviour of an AlSiMg casting alloy

Caceres, CH, Davidson, CJ and Griffiths, JR (1995) The deformation and fracture behaviour of an AlSiMg casting alloy. Materials Science and Engineering A, 197 2: 171-179. doi:10.1016/0921-5093(94)09775-5


Author Caceres, CH
Davidson, CJ
Griffiths, JR
Title The deformation and fracture behaviour of an AlSiMg casting alloy
Journal name Materials Science and Engineering A   Check publisher's open access policy
ISSN 0921-5093
Publication date 1995-07-01
Sub-type Article (original research)
DOI 10.1016/0921-5093(94)09775-5
Volume 197
Issue 2
Start page 171
End page 179
Total pages 9
Language eng
Subject 2210 Mechanical Engineering
2211 Mechanics of Materials
2500 Materials Science
3104 Condensed Matter Physics
Abstract By changing the solidification rate, chemical modification and length of solution treatment we show that the ductility of the Al7Si0.4Mg casting alloy depends on the dendrite cell size and the size and shape of the silicon particles. For the strontium-modified alloy the ductility has a minimum at intermediate cell sizes, the fracture mode being transgranular for the larger cell sizes and intergranular for the finer cell sizes. For the unmodified alloy, the ductility also has a minimum at intermediate cell sizes and the fracture mode is, again, transgranular at large cell sizes and intergranular at fine cell sizes. The ductility of the large cell size unmodified materials is low, being dominated by the large elongated silicon particles. If the unmodified alloy is solution treated for shorter times it is more brittle because the silicon particles are more elongated.
Keyword AlSiMg alloy
Ductility
Fracture
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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