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

Journal Article · Thu Dec 31 23:00:00 EST 1992 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02669615· OSTI ID:6204098

Shi, N; Arsenault, R J ^[1]; Krawitz, A D; Smith, L F ^[2]

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1. Univ. of Maryland, College Park (United States)
2. Univ. of Missouri, Columbia (United States)

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.

• OSTI ID: 6204098
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 24:1; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
ANNEALING
CALCULATION METHODS
CARBIDES
CARBON COMPOUNDS
COHERENT SCATTERING
COMPOSITE MATERIALS
CRYSTALS
DATA
DEFORMATION
DIFFRACTION
EXPERIMENTAL DATA
FINITE ELEMENT METHOD
HEAT TREATMENTS
INFORMATION
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
NEUTRON DIFFRACTION
NUMERICAL DATA
NUMERICAL SOLUTION
PARAMETRIC ANALYSIS
PLASTICITY
RESIDUAL STRESSES
SCATTERING
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS
WHISKERS