In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.

The present invention relates to a novel method for producing metallic semifinished products by extrusion, to the thus obtainable semifinished products and to contact pieces that can be produced therefrom.

The present invention relates to a novel method for producing metallic semifinished products by extrusion, to the thus obtainable semifinished products and to contact pieces that can be produced therefrom.

Devices and methods for performing shear-assisted extrusion processes for forming extrusions of a desired composition from a feedstock material are provided. The processes can use a device having a scroll face having an inner diameter portion bounded by an outer diameter portion, and a member extending from the inner diameter portion beyond a surface of the outer diameter portion.

Extrusion feedstocks and extrusion processes are provided for forming extrusions of a desired composition from a feedstock. The processes can include providing a feedstock having at least two different materials and engaging the materials with one another within a feedstock container.

Methods for preparing metal sheets are provided that can include preparing a metal tube via shear assisted processing and extrusion; opening the metal tube to form a sheet having a first thickness; and rolling the sheet to a second thickness that is less than the first thickness.

A method of forming a fiber-reinforced composite part includes forming a composite preform by extruding a hollow metal shape onto a fiber-reinforced preform at an extrusion temperature and cooling the hollow metal shape from the extrusion temperature to a temperature less than the extrusion temperature. Heat from the hollow metal shape cooling from the extrusion temperature is conducted into the fiber-reinforced preform for curing thereof. Also, thermal contraction of the hollow metal shape onto the fiber-reinforced preform applies a consolidation pressure on the fiber-reinforced preform for curing thereof. The fiber-reinforced preform may be a hollow fiber-reinforced preform and a die can be moved through the hollow fiber-reinforced preform such that consolidation pressure is applied thereto by a combination of the thermal contraction of the hollow metal shape onto the hollow fiber-reinforced preform and the die moving through the hollow fiber-reinforced preform.

A method of forming a fiber-reinforced composite part includes forming a composite preform by extruding a hollow metal shape onto a fiber-reinforced preform at an extrusion temperature and cooling the hollow metal shape from the extrusion temperature to a temperature less than the extrusion temperature. Heat from the hollow metal shape cooling from the extrusion temperature is conducted into the fiber-reinforced preform for curing thereof. Also, thermal contraction of the hollow metal shape onto the fiber-reinforced preform applies a consolidation pressure on the fiber-reinforced preform for curing thereof. The fiber-reinforced preform may be a hollow fiber-reinforced preform and a die can be moved through the hollow fiber-reinforced preform such that consolidation pressure is applied thereto by a combination of the thermal contraction of the hollow metal shape onto the hollow fiber-reinforced preform and the die moving through the hollow fiber-reinforced preform.

An article and method for forming a coated metal pipe for use as an automotive fluid transport tube including a copper plated carbon steel tubing formed into a circular cross sectional profile. At least one intermediate layer including any of a corrosion inhibiting zinc/aluminum alloy, electroplated zinc or hot dip aluminum is applied over said tubing. One or more outer polymer or copolymer layers are applied over the intermediate layer, with the outer layer or multi-layers compounded with a graphene or graphene oxide powder.

An article and method for forming a coated metal pipe for use as an automotive fluid transport tube including a copper plated carbon steel tubing formed into a circular cross sectional profile. At least one intermediate layer including any of a corrosion inhibiting zinc/aluminum alloy, electroplated zinc or hot dip aluminum is applied over said tubing. One or more outer polymer or copolymer layers are applied over the intermediate layer, with the outer layer or multi-layers compounded with a graphene or graphene oxide powder.

A method of producing a clad billet includes heating a corrosion resistant alloy (CRA) cylinder having a hollow interior to expand its inner diameter; inserting a solid carbon or low-alloy steel (CS) material into the hollow interior of the heated (CRA) cylinder so that an outer surface of the (CS) material faces the inner diameter of the (CRA) cylinder; cooling the (CRA) cylinder to contract and shrink the inner diameter of the (CRA) cylinder onto the outer surface of the (CS) material creating an interference fit at an interface with the outer surface, resulting in a composite billet assembly; and hot extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder. The clad billet can be hot-rolled to form metallurgically-bonded clad bar, or can be cold pilgered/cold drawn to form a metallurgically-bonded clad pipe.

A method of producing a clad billet includes heating a corrosion resistant alloy (CRA) cylinder having a hollow interior to expand its inner diameter; inserting a solid carbon or low-alloy steel (CS) material into the hollow interior of the heated (CRA) cylinder so that an outer surface of the (CS) material faces the inner diameter of the (CRA) cylinder; cooling the (CRA) cylinder to contract and shrink the inner diameter of the (CRA) cylinder onto the outer surface of the (CS) material creating an interference fit at an interface with the outer surface, resulting in a composite billet assembly; and hot extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder. The clad billet can be hot-rolled to form metallurgically-bonded clad bar, or can be cold pilgered/cold drawn to form a metallurgically-bonded clad pipe.