ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Spacer method is excellent technique of processing porous metals with well-controlledpore characteristics such as porosity (up to 90%) and pore size (as small as several hundredmicrometers). Compressive properties of porous aluminum fabricated by the spacer method areinvestigated. They were subjected to monotonic compression tests at room temperature, and showedless fluctuated flow stress during their compressive deformation than conventional porous aluminumalloy, reflecting their homogeneous pore characteristics. Also, shortening behavior of the porousaluminum fabricated by the spacer method during cyclic compression was significantly differed fromthat of conventional porous aluminum alloy. Therefore, it can be concluded that the homogeneity ofpore characteristics is responsible for compressive properties of porous metals. Monotoniccompression tests on porous copper specimens with various porosities, which were made by thespacer method, were also conducted. The yield stress of the porous copper with high porosity (or lowrelative density) depended on the relative density more strongly than that of the porous copper withlow porosity (or high relative density). It is presumed that porous metals with high porosity and oneswith low porosities have different deformation mechanisms
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.415.pdf
