Deformation-induced residual stress changes in SiC whisker-reinforced 6061 Al composites

Autor:	L. F. Smith, R.J. Arsenault, N. Shi, A.D. Krawitz
Rok vydání:	1993
Předmět:	Structural material Materials science Mechanics of Materials Residual stress Whisker Ultimate tensile strength Composite number Neutron diffraction Metals and Alloys Composite material Plasticity Condensed Matter Physics Finite element method
Zdroj:	Metallurgical Transactions A. 24:187-196
ISSN:	2379-0180 0360-2133
DOI:	10.1007/bf02669615
Popis:	Neutron powder diffraction was employed to investigate the deformation-induced changes of matrix residual stresses in an annealed 20 vol pct SiC whisker-reinforced 6061 Al composite. It was found that the changes are asymmetric in response to a uniaxial external tensile or compressive load applied along the longitudinal whisker axis. In order to investigate this unusual asymmetric behavior and understand the underlying mechanisms, the finite element method (FEM) was employed and a parametric study was conducted. It was found that a gradient of plastic flow in the matrix is responsible for the asymmetric changes.
Databáze:	OpenAIRE
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