Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/21569
Title: | A new methodology for measurement of semi-solid constitutive behavior and its application to examination of as-cast porosity and hot tearing in aluminum alloys |
Authors: | Phillion, A.B. Cockcroft, S.L. Lee, P.D. |
Department: | Materials Science and Engineering |
Keywords: | Semi-solid tensile deformation;X-ray tomography;Hot tearing;Porosity |
Publication Date: | Sep-2008 |
Publisher: | Elsevier |
Citation: | Phillion, A. B., S. L. Cockcroft, and P. D. Lee. "A new methodology for measurement of semi-solid constitutive behavior and its application to examination of as-cast porosity and hot tearing in aluminum alloys." Materials Science and Engineering: A 491.1 (2008): 237-247. |
Abstract: | Hot tearing and as-cast porosity are two defects which impede the performance of cast products. The effect of porosity on hot tearing was investigated using a novel semi-solid tensile deformation methodology combined with x-ray micro-tomography. Semi-solid deformation tests were conducted on the commercial aluminum-magnesium alloy AA5182 in the as-cast state. This material was tested in two forms: as-received and hot isostatically pressed. In all cases, processing via hot isostatic pressing was found to increase the semi-solid tensile strength and ductility by reducing the number of pre-existing nucleation sites for strain accommodation. Further, it was shown that failure in this material is localized to the fracture surface with very little internal damage occurring in other areas. These results support the hypothesis that as-cast porosity is intimately linked to the hot tearing susceptibility of aluminum alloys. |
URI: | http://hdl.handle.net/11375/21569 |
Identifier: | 10.1016/j.msea.2008.01.078 |
Appears in Collections: | Materials Science and Engineering Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2008_MSE-A_Phillion_etal.(Volume 491).pdf | 755.52 kB | Adobe PDF | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.