A wire (10) for use in a brazing or soldering operation has an elongated body (12) of a metallic material. The elongated body (12) has an outer surface (18). A channel (14) is formed along a length of the body. The channel (14) has an opening (A.sub.1). A flux solution (22) is deposited within the channel (14) and along the length of the body. The flux solution (22) covers a portion of the outer surface (18). A portion of the flux solution (22) is exposed through the opening (A.sub.1) in the channel (14).

A method for preparing a biodegradable zinc alloy semi-solid billet is provided, in which a biodegradable ZnMgBiCaSr zinc alloy ingot is subjected to homogenization annealing and three-directional compression deformation to obtain a uniformly-deformed three-directional upset billet. The three-directional upset billet is subjected to semi-solid isothermal heat treatment to obtain the semi-solid billet. A biodegradable zinc alloy semi-solid billet prepared by such method is also provided.

The invention discloses a high-precision zinc-based alloy electrode wire, the external shell thereof consisting of: Zn: 70.5-95%; Cu: 2.5-27%; X: 0.02-4.0%; Y: 0.002-0.4%, and unavoidable impurities; where, X refers to any two kinds of metals selected from Ni, Ag, Cr, Si and Zr, and the weight percentage of each of these two kinds of metals is 0.01-2.0%; and Y refers to any two kinds of metals selected from Ti, Al, Co, B, and P, and the weight percentage of each of these two kinds of metals is 0.001-0.2%; the -phase in a metallurgical structure of the external shell is above 80 wt %. The invention also provides a method for manufacturing the electrode wire, which has high surface smoothness of the cut metal workpieces to improve the cutting precision. The method has simple process, high maneuverability, less steps, so as to facilitate large-scale and automated production.

A method for preparing a ZnMgCaSr alloy, in which an as-cast ZnMgCaSr alloy is subjected to homogenization, and a boron nitride lubricant is sprayed on a surface of the as-cast ZnMgCaSr alloy and an inner cavity surface of a die. The as-cast ZnMgCaSr alloy is put into the die, and subjected to heating and 8-pass reciprocating extrusion to obtain the desired ZnMgCaSr alloy with high strength and high toughness, where the extrusion speed is stagewise controlled to realize stagewise variable-extrusion speed reciprocating extrusion. This application also provides a biodegradable medical implant material including a ZnMgCaSr alloy prepared by such method.

A high-strength and high-damping AlZn bimetal alloy and a preparation method thereof are provided in the present application, belonging to the field of bimetal alloy materials. The high-strength and high-damping AlZn bimetal is obtained from an Al alloy and a Zn alloy or Zn; the bimetal is structured by an Al alloy skeleton and its embedded Zn alloy; the alloy material has the high strength of an Al alloy and the high damping performance of a Zn alloy.

A clad aluminum alloy material exhibiting favorable corrosion resistance and brazeability in an alkaline environment is shown by a clad aluminum alloy material with excellent brazeability and corrosion resistance in which one surface of an aluminum alloy core material is clad with a sacrificial anode material and the other surface is clad with brazing filler material. The core material includes an aluminum alloy of Si: 0.3-1.5%, Fe: 0.1-1.5%, Cu: 0.2-1.0%, Mn: 1.0-2.0%, and Si content+Fe content 0.8%, wherein the 1-20 m equivalent circle diameter AlMnSiFe-based intermetallic compound density is 3.010.sup.5 to 1.010.sup.6 pieces/cm.sup.2, and the 0.1m to less than 1m equivalent circle diameter AlMnSiFe-based intermetallic compound density is at least 1.010.sup.7pieces/cm.sup.2. The sacrificial anode material includes an aluminum alloy containing Si: 0.1-0.6%, Zn: 1.0-5.0%, and Ni: 0.1-2.0%.

An electrical discharge machining electrode wire includes a core including a copper or a copper alloy, and a covering layer that covers a periphery of the core and includes a zinc. The covering layer includes an outermost layer consisting of an -phase of a copper-zinc based alloy. The outermost layer has a Vickers hardness of 200 to 300 Hv.

This hot-dip Zn-based plated steel sheet includes a steel sheet and a plating layer formed on at least part of a surface of the steel sheet, in which the plating layer has a chemical composition that includes, by mass %, Al: 6.00% to 35.00%, Mg: 2.00% to 12.00%, Ca: 0.005% to 2.00%, Si: 0% to 2.00%, Fe: 0% to 2.00%, Sb: 0% to 0.50%, Sr: 0% to 0.50%, Pb: 0% to 0.50%, Sn; 0% to 1.00%, Cu: 0% to 1.00%, Ti: 0% to 1.00%, Ni: 0% to 1.00%, Mn: 0% to 1.00%, Cr: 0% to 1.00%, and a remainder: Zn and impurities; the plating layer has an area ratio of a MgZn.sub.2 phase in a range of 15% to 60% in a cross section in a thickness direction, and the MgZn.sub.2 phase includes a Ca-based intermetallic compound having a circle equivalent diameter of 0.10 m or smaller.

An electrical discharge machining electrode wire includes a core including a copper or a copper alloy, and a covering layer that covers a periphery of the core and includes a zinc. The covering layer includes an outermost layer consisting of an s-phase of a copper-zinc based alloy. The outermost layer has a Cu concentration of 12 to 20 mass % and a variation range within 5 mass % in the Cu concentration in a longitudinal direction of the electrode wire.

The present invention, in some embodiments, is a method of forming an O temper or T temper product that includes obtaining a coil of a non-ferrous alloy strip as feedstock; uncoiling the coil of the feedstock; heating the feedstock to a temperature between a recrystallization temperature of the non-ferrous alloy and 10 degrees Fahrenheit below a solidus temperature of the non-ferrous alloy; and quenching the feedstock to form a heat-treated product having am O temper or T temper. The non-ferrous alloy strip used in the method excludes aluminum alloys having 0.4 weight percent silicon, less than 0.2 weight percent iron, 0.35 to 0.40 weight percent copper, 0.9 weight percent manganese, and 1 weight percent magnesium.