Deformation behavior of the percolating intermetallic microstructure of high pressure die cast AZ91 alloy

Zhang, Bao, Nagasekhar, Anumalasetty V., Sivarupan, Tharmalingam and Caceres, Carlos H. (2013) Deformation behavior of the percolating intermetallic microstructure of high pressure die cast AZ91 alloy. Advanced Engineering Materials, 15 11: 1059-1067. doi:10.1002/adem.201300138

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Author Zhang, Bao
Nagasekhar, Anumalasetty V.
Sivarupan, Tharmalingam
Caceres, Carlos H.
Title Deformation behavior of the percolating intermetallic microstructure of high pressure die cast AZ91 alloy
Journal name Advanced Engineering Materials   Check publisher's open access policy
ISSN 1438-1656
1527-2648
Publication date 2013-09-13
Sub-type Article (original research)
DOI 10.1002/adem.201300138
Volume 15
Issue 11
Start page 1059
End page 1067
Total pages 9
Place of publication Weinheim, Germany
Publisher Wiley - V C H Verlag
Collection year 2014
Language eng
Formatted abstract
The intermetallic microstructure in two representative regions of the cross section, the corner and the core, of a cast-to-shape tensile specimen was studied. Available 3D data of the intermetallic, obtained with focused dual ion beam tomography, were incorporated into a finite element code to simulate the deformation behavior. The modeling reveals a high structural compliance at both the corner and the core, akin to the bending-dominated behavior of cellular foams. The high compliance suggests that the percolating microstructure should keep most of its structural integrity, reinforcing the alloy without compromising the ductility, for strains above 1%. Scanning electron microscope observations of the damage by cracking of the intermetallic along the gauge of a tensile specimen deformed to fracture supported this prediction.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 13 SEP 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
School of Engineering Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 29 Oct 2013, 10:54:30 EST by Mr Tharmalingam Sivarupan on behalf of School of Mechanical and Mining Engineering