DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/13967

Title: Mechanical properties of cellular solids produced from hollow stainless steel spheres
Authors: ROY, S
WANNER, A
BECK, T
STUDNITZKY, T
STEPHANI, G
Keywords: ALUMINUM FOAM
METAL FOAMS
BEHAVIOR
Issue Date: 2011
Publisher: SPRINGER
Citation: JOURNAL OF MATERIALS SCIENCE,46(16)5519-5526
Abstract: Mechanical properties of cellular hollow sphere structures are studied in this work. The material was fabricated by coating the metallic powder slurry on expanded polystyrol (EPS) spheres, drying, forming under compression, debinding, and final sintering of the spheres to each other. Longitudinal elastic wave velocities were measured using ultrasound phase spectroscopy while compression tests were carried out up to a homologous temperature of 0.6. Dependence of the relative Young's modulus on the relative density is similar to conventional open-cell foams. Compression stress-strain plots show the three stages of elastic deformation, plateau, and densification. With increasing temperature the overall level of the compressive stress-strain plots shifts to lower stresses. The hollow sphere solids show slightly better high temperature strength in comparison to the base metal. However, due to the considerable scatter in the experimental data points, this improvement seems to be insignificant. Structural observations on samples deformed to within the plateau region clearly show the heterogeneous progress of deformation.
URI: http://dx.doi.org/10.1007/s10853-011-5496-6
http://dspace.library.iitb.ac.in/jspui/handle/100/13967
ISSN: 0022-2461
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback