Finite element modeling and simulation of thermomechanical processing of particle reinforced metal matrix composites
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1997
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 135
Subjects: METALWORKING; METAL MATRIX COMPOSITES
Description: During the consolidation phase, reinforcement particles of Metal Matrix Composites (MMC's) tend to be non uniformly distributed. The result is that the material properties of the composite materials are not as good as those originally desired. Through large amounts of straining, homogeneity can be achieved. Finite element models of MMC's undergoing different thermomechanical processes (TMP's) to true strains of approximately 1.2 were generated. The models consist of particle clusters within the particle-depleted matrix. The particle clusters were modeled by either a smeared model in which the particles refine the grains in the cluster, or a discrete model of the particles within clusters. The smeared and discrete models qualitatively agreed with each other. The results suggest that the best TMP to reach a state of reinforcement particle homogeneity was a hot worked, low strain rate TMP.
Notes: Thesis advisor, Young W. Kwon.

AD-A331 150.

Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, March 1997.

Includes bibliographical references (p. 133).