ISSN:
1662-9752
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:
This paper investigated the mechanical response of porous copper manufactured by LCSunder three-point bending and Charpy impact conditions. The effects of the compaction pressureand K2CO3 particle size used in producing the porous copper samples and the relative density of thesamples were studied. The apparent modulus, flexural strength and energy absorption capacity inthree-point bending tests increased exponentially with increasing relative density. The impactstrength was not markedly sensitive to relative density and had values within 7 – 9 kJ/m2 for therelative densities in the range 0.17 – 0.31. The amount of energy absorbed by a porous coppersample in the impact test was much higher than that absorbed in the three-point bending test,impling that loading strain rate had a significant effect on the deformation mechanisms. Increasingcompaction pressure and increasing K2CO3 particle size resulted in significant increases in theflexural strength and the bending energy absorption capacity, both owing to the reduced sinteringdefects
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1863.pdf
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