A nanocomposite comprising crystalline grains in an amorphous matrix, the crystalline grains comprising an iron (Fe)-nickel (Ni) compound and being separated from one another by the amorphous matrix; and one or more barriers between the crystalline grains and the amorphous matrix, the barriers being configured to inhibit growth of the crystalline grains during forming of the crystalline grains, a barrier of the one or more barriers being between a crystalline grain and the amorphous matrix; wherein the amorphous matrix comprises an increased resistivity relative to a resistivity of the crystalline grains; and wherein the amorphous matrix is configured to reduce losses of the crystalline grains caused by a change in a magnetic field applied to the crystalline grains relative to losses of the crystalline grains that occur without the amorphous matrix.

Recrystallization of an aluminium alloy wire material is suppressed while a heat resistance of the same is improved. In a wire material made of an aluminium alloy, an aluminium alloy wire material is provided, the aluminium alloy containing Zr of 0.2 to 1.0 mass %, Co of 0.1 to 1.0 mass % and remainders that are aluminium and unavoidable impurities, and the aluminium alloy wire material having a tensile strength at a room temperature that is equal to or higher than 170 MPa, an elongation that is equal to or higher than 10%, and a stress at time of tensile deformation at a strain speed of 10.sup.−5/sec under a temperature condition of 250° C. that is equal to or higher than 40 MPa.

Recrystallization of an aluminium alloy wire material is suppressed while a heat resistance of the same is improved. In a wire material made of an aluminium alloy, an aluminium alloy wire material is provided, the aluminium alloy containing Zr of 0.2 to 1.0 mass %, Co of 0.1 to 1.0 mass % and remainders that are aluminium and unavoidable impurities, and the aluminium alloy wire material having a tensile strength at a room temperature that is equal to or higher than 170 MPa, an elongation that is equal to or higher than 10%, and a stress at time of tensile deformation at a strain speed of 10.sup.−5/sec under a temperature condition of 250° C. that is equal to or higher than 40 MPa.

The present invention relates to a manufacturing method of 800 MPa grade steel bar and the 800 MPa grade steel bar produced therefrom. The 800 MPa grade steel bar produced by the manufacturing method comprises, in weight percentages, the following composition: carbon, 0.10%-0.30%; manganese, 7.00%-11.00%; aluminum, 1.00%-3.00%; silicon, 0-1.00%; vanadium, 0.05%-0.30%; niobium; 0-0.10%; and the balance of Fe and inevitable impurities; the manufacturing method comprises the steps of smelting to obtain molten steel containing components of the steel bar; forming the molten steel into a billet by casting; heating the billet to a temperature T1 of 1050° C.≤T1≤1200° C. and thermally insulating for 1.5-2.5 hours; performing hot rolling on the thermally insulated billet, the finishing rolling temperature T2 being 500° C.≤T2≤800° C.; and naturally cooling the hot-rolled billet to ambient temperature. The hot-rolled steel bar of the present invention has a dual-phase microstructure of martensite and austenite. The hot rolled steel bar both has a high yield strength of 800-1000 MPa, an ultra-high tensile strength of 1300 MPa-1900 MPa, an ultra-high tensile to yield ratio of 1.6-2.2, and a high uniform elongation of 8%-20%.

A method for controlling or regulating the temperature of a steel strip in hot forming in a hot strip mill. A superordinate open-loop or closed-loop controller has a process model that predetermines the temperature development of the hot strip. The target values of the individual units are adjusted based on this predetermined temperature development.

A method for controlling or regulating the temperature of a steel strip in hot forming in a hot strip mill. A superordinate open-loop or closed-loop controller has a process model that predetermines the temperature development of the hot strip. The target values of the individual units are adjusted based on this predetermined temperature development.

A bioabsorbable wire material includes manganese (Mn) and iron (Fe). One or more additional constituent materials (X) are added to control corrosion in an in vivo environment and, in particular, to prevent and/or substantially reduce the potential for pitting corrosion. For example, the (X) element in the Fe—Mn—X system may include nitrogen (N), molybdenum (Mo) or chromium (Cr), or a combination of these. This promotes controlled degradation of the wire material, such that a high percentage loss of material the overall material mass and volume may occur without fracture of the wire material into multiple wire fragments. In some embodiments, the wire material may have retained cold work for enhanced strength, such as for medical applications. In some applications, the wire material may be a fine wire suitable for use in resorbable in vivo structures such as stents.

A bioabsorbable wire material includes manganese (Mn) and iron (Fe). One or more additional constituent materials (X) are added to control corrosion in an in vivo environment and, in particular, to prevent and/or substantially reduce the potential for pitting corrosion. For example, the (X) element in the Fe—Mn—X system may include nitrogen (N), molybdenum (Mo) or chromium (Cr), or a combination of these. This promotes controlled degradation of the wire material, such that a high percentage loss of material the overall material mass and volume may occur without fracture of the wire material into multiple wire fragments. In some embodiments, the wire material may have retained cold work for enhanced strength, such as for medical applications. In some applications, the wire material may be a fine wire suitable for use in resorbable in vivo structures such as stents.

An elongated steel element having a non-round cross-section and being in a work-hardened state, said elongated steel element having as steel composition: a carbon content ranging from 0.20 weight percent to 1.00 weight percent, a silicon content ranging from 0.05 weight percent to 2.0 weight percent, a manganese content ranging from 0.40 weight percent to 1.0 weight percent, a chromium content ranging from 0.0 weight percent to 1.0 weight percent, a sulfur and phosphor content being individually limited to 0.025 weight percent, contents of nickel, vanadium, aluminium, molybdenum or cobalt all being individually limited to 0.5 weight percent, the remainder being iron and unavoidable impurities, said steel having martensitic structure that comprises martensitic grains, wherein a fraction of at least 10 volume percent of martensitic grains is oriented.

An inline thermal treatment system for thermally treating a continuous product includes a housing comprising a first opening and second opening respectively configured to allow the continuous product to enter and to exit the housing. The system includes at least one laser coupled to a laser power source and configured to output at least one laser beam that impinges upon and heats the portion of the continuous product.