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:
The composite ceramics that contains nano-fibers and transformation particles, fabricatedthrough SHS process, is performed with high fracture toughness and high plasticity. The matrix ofcomposite ceramics was mainly composed of fiber eutectics with nano-fibers. The transformationparticles were distributed along boundaries of the fiber eutectic structures. First, Mori-Tanaka methodwas used to predict the stiffness of the fiber eutectic. The fiber eutectic is transverse isotropy and has fiveindependent elastic constants. Then considering random orientation of the fiber eutectic, the Young’smodulus and Poisson’s ratio of the matrix is determined by even strain. The matrix is isotropy. Finely,assuming the transformation particles as spheres distributed in the matrix, the effective stiffness forcomposite ceramics was computed. When the volume fraction of fibers and particles increase, theYoung’s modulus of composite ceramics decrease and are little smaller than the volume average value,the Poisson’s ratio of composite ceramics decrease and are little bigger than the volume average value
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2528.pdf
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