We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Synchrotron Radiography Studies of Shear-Induced Dilation in Semisolid Al Alloys and Steels.
- Authors
Gourlay, C.; O'Sullivan, C.; Fonseca, J.; Yuan, L.; Kareh, K.; Nagira, T.; Yasuda, H.
- Abstract
An improved understanding of the response of solidifying microstructures to load is required to further minimize casting defects and optimize casting processes. This article overviews synchrotron radiography studies that directly measure the micromechanics of semisolid alloy deformation in a thin-sample direct-shear cell. It is shown that shear-induced dilation (also known as Reynolds' dilatancy) occurs in semisolid alloys with morphologies ranging from equiaxed-dendritic to globular, at solid fractions from the dendrite coherency point to ~90% solid, and it occurs in both Al alloys and carbon steels. Discrete-element method simulations that treat solidifying microstructures as granular materials are then used to explore the origins of dilatancy in semisolid alloys.
- Subjects
RADIOGRAPHY; ALLOYS; MICROALLOYING; METALLIC composites; STEEL
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2014, Vol 66, Issue 8, p1415
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-014-1029-5