| 摘要 |
Aspects of the present invention provide for novel and improved aluminum wheels, and method for making same, the wheels comprising at least one of: 'preform' material used for wheel rim-bead reinforcement to afford additional strength and wear-resistance at the rim-bead area; and 'preform' material used for wheel face-flange reinforcement to afford additional strength in the face-flange and wheel locating hole area. Additional aspects provide 'preform' for use in infiltration casting, the pre-forms preferably comprising altered porosity (e.g., porosity size gradients) to eliminate abrupt transitions between materials having different CTE values to reduce or eliminate residual stress commonly produced in the die casting craft. Preferably, such porosity gradient 'preform' are used in the inventive reinforced aluminum wheels.
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