A brazing sheet (1) includes a core material (11) composed of an Al alloy containing 0.40-2.50 mass % Mg; and a filler material (12) composed of an Al alloy containing Mg, 6.0-13.0 mass % Si, and 0.010-0.050 mass % Bi. The filler material is layered on a side of the core material and is exposed at an outermost surface (121). The Mg concentration in the filler material continuously decreases in a direction from a boundary (122) with the core material toward the outermost surface. The Mg concentration (c.sub.1/8) is 0.080 mass % or less at a depth (position P.sub.1/8) from the outermost surface that is ⅛ of the thickness t.sub.f of the filler material (12). The Mg concentration (c.sub.7/8) is 15-45% of the amount of Mg in the core material at a depth (position P.sub.7/8) from the outermost surface that is ⅞ of the thickness t.sub.f of the filler material.

Method for producing a component system having a first component with a first component portion and a second component with a second component portion, including the following steps: connecting, in particular welding or soldering, the first component portion, which consists of an aluminum alloy, to the second component portion, which in particular consists of a naturally aged aluminum alloy, a copper alloy or an iron alloy, in particular a steel alloy, so as to form a connection seam; artificially aging the connection seam such that the yield strength of the connection seam is above the yield strength of the first component portion and/or of the second component portion; and deforming, in particular deep-drawing and/or stretch-drawing, the component system.

An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux includes a core material of aluminum or aluminum alloy, and a brazing material of aluminum alloy including Si of 4.0 mass % to 13.0 mass % and cladding one side surface or both side surfaces of the core material. One or both of the core material and the brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr). The aluminum alloy brazing sheet is a brazing sheet in which oxide particles including the X atoms and having a volume change ratio of 0.99 or lower with respect to an oxide film before brazing heating are formed on a surface thereof, by brazing heating.

An aluminum brazing sheet for flux-free brazing having a multilayer structure of two or more layers including at least one core material layer and one brazing material layer, wherein the brazing material layer is positioned on one or both sides of the core material layer and on an outermost surface of the brazing sheet. The brazing material layer is made of an Al—Si—Mg—X brazing material containing: in mass%, 0.05 to 2.0% of Mg, and 2.0 to 14.0% of Si, and further containing one or more of 0.01 to 0.3% of Bi, Ga, Sn, In and Pb, a total amount of Bi, Ga, Sn, In and Pb being 0.5% or less. X indicates one or more of Bi, Ga, Sn, In and Pb.

An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using a flux includes a brazing material cladded onto at least one side surface of a core material. An oxide is formed on a surface of the aluminum alloy brazing sheet by brazing heating, the oxide including any one or two or more of Mg, Li, and Ca and having a volume change ratio of 0.990 or less to a surface oxide film formed before brazing heating, and an atomic molar ratio of Mg, Li, and Ca to Al in the oxide formed on the surface of the aluminum alloy brazing sheet before brazing heating is 0.50 or less. The present invention provides an aluminum alloy brazing sheet having excellent brazability in brazing in an inert gas atmosphere without using a flux, and a method for manufacturing the same.

A manufacturing process of a high-strength aluminum alloy wire/strip includes the following steps: A. subjecting an alloy to smelting and spray forming to obtain a high-strength Al—Zn—Mg—Cu aluminum alloy blank; B. subjecting the blank to semi-solid upset forging to form an ingot; C. subjecting the ingot to hot extrusion and then to vacuum annealing to form a coiled material; D. subjecting the coiled material to hot continuous rolling to obtain a wire blank; and E. subjecting the wire blank to solution heat treatment, multiple stretching treatments, annealing, and multiple continuous stretching treatments to obtain the high-strength aluminum alloy wire/strip. The high-strength aluminum alloy wire/strip has the characteristics of fine and compact grains, uniform structure, clear grain boundaries, no precipitates, and no layered structure affecting the stretching performance.

A scandium-containing aluminium powder alloy, wires and materials including said alloy, and a method for producing the scandium-containing aluminium powder alloy, the wires and materials, the proportion of scandium in the scandium-containing aluminium powder alloy being elevated, are disclosed. At least one element is selected from the group consisting of the lanthanum group except for Ce, Y, Ga, Nb, Ta, W, V, Ni, Co, Mo, Li, Th, Ag.

A scandium-containing aluminium powder alloy, wires and materials including said alloy, and a method for producing the scandium-containing aluminium powder alloy, the wires and materials, the proportion of scandium in the scandium-containing aluminium powder alloy being elevated, are disclosed. At least one element is selected from the group consisting of the lanthanum group except for Ce, Y, Ga, Nb, Ta, W, V, Ni, Co, Mo, Li, Th, Ag.

A method of making a semiconductor including soldering a conductor to an aluminum metallization is disclosed. In one example, the method includes substituting an aluminum oxide layer on the aluminum metallization by a substitute metal oxide layer or a substitute metal alloy oxide layer. Then, substitute metal oxides in the substitute metal oxide layer or the substitute metal alloy oxide layer are at least partly reduced. The conductor is soldered to the aluminum metallization using a solder material.

A method for producing an aluminum alloy clad material having a core material and a sacrificial anode material clad on at least one surface of the core material, wherein the core material comprises an aluminum alloy comprising 0.050 to 1.5 mass % (referred to as “%” below) Si, 0.050 to 2.0% Fe and 0.50 to 2.00% Mn; the sacrificial anode material includes an aluminum alloy containing 0.50 to 8.00% Zn, 0.05 to 1.50% Si and 0.050 to 2.00% Fe; the grain size of the sacrificial anode material is 60 μm or more; and a ratio R1/R2 is 0.30 or less, wherein R1 (μm) is a grain size in a thickness direction and R2 (μm) is a grain size in a rolling direction in a cross section of the core material along the rolling direction; a production method thereof; and a heat exchanger using the clad.