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:
Graded Al2O3/Y-ZrO2 ceramics are developed to receive a construction materialcombining favourable properties of both constituent components, alumina (low wear rate, highhardness) and zirconia (high strength and toughness). The high performance of this material can bereached by optimising the internal residual stress distribution resulting mainly from phase specificstresses after cooling from the sintering temperature. For this purpose, non-destructive neutrondiffraction mapping of residual stresses has been employed. However, the application of theconventional method does not provide straightforward results on macroscopic residual stresses. Thisexperimental technique uses the crystal lattice plane as a built in microscopic strain gauge and themeasured quantities are then lattice strains detected in each constituent phase separately. Based onthese experimental resources, the paper proposes a procedure of separation of the residualmacroscopic stress from phase specific stresses. The application of the presented method isdemonstrated on functionally graded materials (FGM) prepared by electrophoretic deposition(EPD)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.571-572.309.pdf
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