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- Title
Deformation Behavior of the Percolating Intermetallic Microstructure of High Pressure Die Cast AZ91 Alloy.
- Authors
Zhang, Bao; Nagasekhar, Anumalasetty V.; Sivarupan, Tharmalingam; Caceres, Carlos H.
- 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.
- Subjects
ION beams; FINITE element method; SCANNING electron microscopy; DILUTE alloys; INTERMETALLIC compounds
- Publication
Advanced Engineering Materials, 2013, Vol 15, Issue 11, p1059
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.201300138