Cast metal composite article
AssigneeImperial Clevite Inc.
InventorsMilton E. Toaz, Martin D. Smalc
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Abstract
A metal article such as a piston for a diesel engine has at least one portion which includes a matrix composite reinforced by inorganic ceramic fibers, wherein the density of fibers and/or the fiber orientation in the matrix composite is varied to provide superior resistance to thermal fatigue while having superior strength and wear characteristics.
Claims7
A cast metal article comprising a body made from a metal taken from the group consisting of aluminum, magnesium, zinc and alloys thereof, said body having a first part of only said metal and a second composite part containing both said metal and a preform insert member of a ceramic fiber material, said preform insert member having a first preselected characteristic portion directly adjacent said first body portion oriented for achieving a highly reliable bond between the first part of the body and the second composite part, a second preselected characteristic portion apart from said first preselected characteristic portion oriented for providing optimum thermal fatigue and wear properties, thereby not necessitating the need for a special surface coating.
Dependencies are inferred from the claim text.