Abstract: A reinforced powder metal component is disclosed, the powder metal component having reinforcing preforms disposed in selected locations to provide a local reinforcement for the powder metal component.

Abstract: An automotive engine component and method of producing the same. The method uses dynamic magnetic compaction to form components with non-axisymmetric and related irregular shapes. A die is used that has an interior profile that is substantially similar to the non-axisymmetric exterior of the component to be formed such that first and second materials can be placed into the die prior to compaction. The first material is in powder form and can be placed in the die to make up a first portion of the component being formed, while a second material can be placed in the die to make up a second portion of the component. The second material, which may possess different tribological properties from those of the first material, can be arranged in the die so that upon formation, at least a portion of the component's non-axisymmetric exterior profile is shaped by or includes the second material.

Abstract: One embodiment includes compacting a powder material using at least a first magnetic field to form a compact and selectively sintering a first portion of the compact and leaving a second portion of the compact unsintered to form a component.

Abstract: One embodiment includes providing a first layer including a first powder material and a second layer including a second powder material over the first layer, and compacting the first powder material and the second powder material using at least a first magnetic field.

Abstract: A materials combination for a camshaft and follower of an engine valve train provides excellent wear resistance. The camshaft or camshaft lobes are made from a malleable cast iron and the cam followers are made from a carbonitrided 52100 or 4130 steel to provide excellent wear resistance equivalent to diamond-like coatings at greatly reduced cost.

Abstract: An automotive engine valve stem, engine valve and method of producing both. The valve includes a head and a stem joined to the head. Lightweight, high-temperature materials, such as titanium-based materials may be used to make up at least a the majority of the valve. These materials are combined with fabrication techniques that may vary between the head and the stem, where at least a part of the valve is made by dynamic magnetic compaction. While a majority of the stem may be made from a titanium-based powder material, its tip may be made of a high strength hardened material, such as a steel alloy. The valve head may be made by single press and sintering, double press and sintering, forging and machining, forging and sintering, and dynamic magnetic compaction and sintering.

Abstract: A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft.

Abstract: A cast iron cylinder liner for an engine has a body with a radial upper flange and a generally cylindrical wall extending axially from an inner portion of the flange. An arcuate fillet is formed at a juncture between the upper flange and an exterior of the cylindrical wall. To strengthen the juncture of thin wall liners, for example with wall thickness less than 2.5 mm, a portion adjacent the fillet is laser hardened to a selected depth of the wall, thus increasing resistance to stresses created in the wall when the liner is installed and operating in an engine.

Abstract: A cast iron cylinder liner for an engine has a body with a radial upper flange and a generally cylindrical wall extending axially from an inner portion of the flange. An arcuate fillet is formed at a juncture between the upper flange and an exterior of the cylindrical wall. To strengthen the juncture of thin wall liners, for example with wall thickness less than 2.5 mm, a portion adjacent the fillet is laser hardened to a selected depth of the wall, thus increasing resistance to stresses created in the wall when the liner is installed and operating in an engine.