Abstract: A shear plane ratio is reduced by a dislocation density in which a value obtained by dividing the half-value width ? of the intensity of diffraction of {311} plane in the surface of a Cu—Fe—P alloy sheet, by its peak height H, is 0.015 or more. In addition, a Cu—Fe—P alloy sheet with relatively small Fe content is provided with a texture in which a ratio (I(200)/I(220)) of intensity of diffraction of (I(200)) from the (200) plane in the sheet surface to intensity of diffraction of (I(220)) from the (220) plane, is 0.3 or less. In addition, a Cu—Fe—P alloy sheet with relatively small Fe content is provided with a texture in which the orientation distribution density of Brass orientation measured by the crystal orientation analysis method using an EBSP by an FE-SEM, is 25% or more; and an average grain size in the sheet is 6.0 ?m or less.

Abstract: Provided is a 6000-series aluminum alloy sheet having good formability for an automotive body panel, which can be manufactured without greatly varying an existing composition or an existing manufacturing condition. The amount of solute Si and the amount of solute Cu in an Al—Mg—Si aluminum alloy sheet are increased in a balanced manner, so that the sheet has a dislocation density within a specific range when tensile deformation in a low-strain region is applied to the sheet. This suppresses localization of dislocations introduced into a material due to tensile deformation during press forming into an automotive body panel, and allows dislocations to be evenly multiplied from the low-strain region to a high-strain region. Consequently, uneven deformation is suppressed during forming into the automotive body panel, and good work hardenability is exhibited.

Abstract: A shear plane ratio is reduced by a dislocation density in which a value obtained by dividing the half-value width p of the intensity of diffraction of {311} plane in the surface of a Cu—Fe—P alloy sheet, by its peak height H, is 0.015 or more. In addition, a Cu—Fe—P alloy sheet with relatively small Fe content is provided with a texture in which a ratio (I (200) /I (220)) of intensity of diffraction of (1 (200)) from the (200) plane in the sheet surface to intensity of diffraction of (I (220)) from the (220) plane, is 0.3 or less. In addition, a Cu—Fe—P alloy sheet with relatively small Fe content is provided with a texture in which the orientation distribution density of Brass orientation measured by the crystal orientation analysis method using an EBSP by an FE-SEM, is 25% or more; and an average grain size in the sheet is 6.0 ?m or less.

Abstract: Disclosed is a 7xxx-series aluminum alloy sheet that has a specific chemical composition and is produced by a common procedure. The sheet maintains high strength via a good balance between Zn and Mg, while the Zn content is controlled. The average compositional ratio of Zn to Mg in grain-boundary precipitates is controlled in the sheet that is naturally aged after production; and the average compositional ratio of Zn to Mg in intragranular precipitates is controlled in the sheet that is further artificially aged after the natural aging. Thus, the aluminum alloy sheet is allowed to have formability, corrosion resistance, and such high strength as to be demanded of structural components.

Abstract: An aluminum-alloy sheet includes 0.10 to 0.40 mass % of Si, 0.35 to 0.80 mass % of Fe, 0.10 to 0.35 mass % of Cu, 0.20 to 0.80 mass % of Mn, and 1.5 to 2.5 mass % of Mg, the balance being Al and unavoidable impurities, wherein a content ratio (Si/Fe) of the Si to the Fe is 0.75 or less, the area fraction of Mg2Si intermetallic compound grains having a maximum length of 1 ?m or more is 0.10% or more in a region of a section of the aluminum-alloy sheet, the region being a central region in the thickness direction of the aluminum-alloy sheet, and the aluminum-alloy sheet has a proof stress of 225 to 270 N/mm2 after having been baked at 270° C. for 20 seconds.

Abstract: An aluminum-alloy sheet includes 0.10 to 0.40 mass % of Si, 0.35 to 0.80 mass % of Fe, 0.10 to 0.35 mass % of Cu, 0.20 to 0.80 mass % of Mn, and 1.5 to 2.5 mass % of Mg, the balance being Al and unavoidable impurities, wherein a content ratio (Si/Fe) of the Si to the Fe is 0.75 or less, the solute Mn content is 0.12 to 0.20 mass %, and the aluminum-alloy sheet has a proof stress of 225 N/mm2 or more after having been baked at 270° C. for 20 seconds.

Abstract: Disclosed is a copper alloy containing 1.0% to 3.6% of Ni, 0.2% to 1.0% of Si, 0.05% to 3.0% of Sn, 0.05% to 3.0% of Zn, with the remainder including copper and inevitable impurities. The copper alloy has an average grain size of 25 ?m or less and has a texture having an average area percentage of cube orientation of 20% to 60% and an average total area percentage of brass orientation, S orientation and copper orientation of 20% to 50%. The copper alloy has a KAM value of 0.8 to 3.0 and does not suffer from cracking even when subjected to U-bending. The copper alloy has excellent balance between strengths (particularly yield strength in a direction perpendicular to the rolling direction) and bending workability.

Abstract: The present invention relates to an Al—Mg—Si-based aluminum alloy plate for molding which contains, in mass %, Mg: 0.3-1.3%, Si: 0.5-1.5% and Sn: 0.005-0.2%, the remainder being Al and unavoidable impurities, wherein when the Sn content in the residue compound separated by a hot phenol residue extraction method and having a particle size exceeding 0.1 ?m is subtracted from the Sn content in the aluminum alloy plate, the resulting difference is a 0.005 mass % or greater quantity of Sn. The aluminum alloy plate for molding combines moldability and BH properties after long-term aging at room temperature.

Abstract: This aluminum alloy sheet is a 6000-series aluminum alloy sheet of a specific composition which, after rolling, has undergone solution hardening and reheating as tempering treatments. The aluminum alloy sheet in differential scanning calorimetry gives a curve in which the exothermic-peak heights A, B, and C in respective specific temperature ranges have relationships within specific given ranges to thereby raise the increase in 0.2% proof stress through low-temperature short-time artificial age-hardening to 100 MPa or more.

Abstract: A high strength 6000-series aluminum alloy sheet improved with good bendability is provided. Amounts of solute Mg and solute Si are increased in a good balance, on the premise of not greatly changing the composition and the manufacturing condition of the aluminum alloy sheet, thereby promoting formation of Mg—Si clusters in a good balance between the number of Mg and Si atoms to increase the strength after BH without deteriorating the bendability even after natural aging.

Abstract: A 6000-series aluminum alloy sheet used for structural materials such as structural materials and reinforcing materials increased in the strength without deteriorating bendability is provided. The strength of the Al—Mg—Si alloy sheet after BH is increased without deteriorating the bendability also after natural aging by defining the microstructure such that the content of Mg and Si are balanced so as to satisfy (Mg content)+(Si content)?1.5% and 0.6?(Mg content)/(Si content)?2.0, and an exothermic peak of a predetermined height is present only by one in a temperature range of 230 to 330° C. of a differential scanning calorimeter measurement curve of the sheet shown in FIG. 1.

Abstract: This aluminum alloy sheet has increased BH properties under low-temperature short-time-period conditions after long-term room-temperature aging by means of causing aggregates of specific atoms to be contained having a large effect in BH properties, the distance between atoms being no greater than a set distance, and containing either Mg atoms or Si atoms measured by 3D atom probe field ion microscopy in a 6000 aluminum alloy sheet containing a specific amount of Mg and Si.

Abstract: One of the purposes of the present invention is to provide a 6000-series aluminum alloy plate exhibiting bake hardening (BH) properties and molding properties after aging at room temperature for a long period. In one embodiment of the present invention, in a Sn-containing 6000-series aluminum alloy plate, specific clusters that greatly contribute to the development of the BH properties, which are determined by means of a three-dimensional atom probe field ion microscope, are contained at a predetermined density or more, and the sizes of the atom clusters that meet the aforementioned requirement are uniformed to adjust the average radius of an equivalent circle diameter of each of the clusters to a value falling within a specified range and reduce the standard deviation of the radius of the equivalent circle diameter, whereby the BH properties after aging at room temperature for a long period can be improved.

Abstract: Disclosed is a 7xxx-series aluminum alloy sheet having a specific chemical composition and produced by a common procedure. The aluminum alloy sheet has a good balance between a Zn content and a Mg content while having a lower Zn content so as to have a strength retained at high level. The aluminum alloy sheet has a microstructure having a specific endothermic peak temperature and a specific maximum height of exothermic peak(s) in a differential scanning calorimetric curve, where the curve is plotted after natural aging of the produced sheet. The aluminum alloy sheet can thereby have a high strength, satisfactory formability, and good corrosion resistance which are required for structural components.

Abstract: A 6000-series aluminum alloy plate, which is obtained by introducing a minor amount of Sn into a 6000-series aluminum alloy plate that has a specific Mg and Si composition, and controlling the tissue of the plate on the basis of the tissue thereof under a specific heat treatment, shows an improved hem bendability even after aging for a long period of time at room temperature, as a characteristic after the natural aging, and increases the bake hardenability (BH response) in baking finishing a molded automobile panel.

Abstract: The aluminum alloy sheet of the present invention is a specific 6000-series aluminum alloy sheet in which the total sum (total amount) of Mg and Si existing in specific aggregates of atoms (clusters) is regulated and the total sum of Mg and Si existing in the aggregates of atoms is ensured so as to be balanced with the total amount of Mg and Si solid-solutionized in the matrix, and thus BH response (bake hardenability) after natural aging at room temperature and proof strength after BH treatment (bake hardening treatment) are further improved.

Abstract: The present invention relates to a copper alloy having high strength, high electrical conductivity, and excellent bendability, the copper alloy containing, in terms of mass %, 0.4 to 4.0% of Ni; 0.05 to 1.0% of Si; and, as an element M, one member selected from 0.005 to 0.5% of P, 0.005 to 1.0% of Cr, and 0.005 to 1.0% of Ti, with the remainder being copper and inevitable impurities, in which an atom number ratio M/Si of elements M and Si contained in a precipitate having a size of 50 to 200 nm in a microstructure of the copper alloy is from 0.01 to 10 on average, the atom number ratio being measured by a field emission transmission electron microscope with a magnification of 30,000 and an energy dispersive analyzer.

Abstract: Provided is an Al—Mg alloy plate for molding, having excellent press formability, little stretcher strain (SS) mark generation, and not generating any new issues such as reduced bending properties as a result of age-hardening at room temperature, whilst using more accurate and simple structural indicators. As a result, the Al—Mg aluminum alloy plate comprising a specific composition including Cu has a plate structure having an average particle diameter of 0.5-6.0 nm in a minute particle (cluster) particle distribution measured using an X-ray scattering method, controls the volume fraction to at least 0.03%, is unlikely to have serration, and suppresses SS mark generation during press forming.

Abstract: Provided is an automobile part comprising a 7000-series aluminum alloy sheet and provided with both strength and stress corrosion cracking resistance. The automobile part is configured from a 7000-series aluminum alloy sheet having a specific composition, and after artificial aging processing, the grain size distribution of precipitates evaluated by means of a small angle x-ray scattering among the crystal grains of the aluminum alloy plate and the normalized dispersion of the grain size distribution are controlled, resulting in being simultaneously provided with high strength in the form of an 0.2% proof stress of at least 350 MPa, high ductility, and SCC resistance.

Abstract: Provided is a 7000-series aluminum alloy sheet that is for an automobile part and that is provided with both strength and stress corrosion cracking resistance. The cold-rolling rate and solution treatment conditions are controlled of an Al—Zn—Mg alloy sheet having a specific composition and produced by means of a conventional method. Also, the structure has a low average crystal size, an average fraction of low-angle grain boundaries at an inclination angle of 5-15° of at least 15%, and an average fraction of high-angle grain boundaries at an inclination angle exceeding 15° of 15-50%. Alternatively, there is a specific aggregate structure having a low average crystal size, and a total area ratio of the specific orientation of the Brass orientation, S orientation, Cu orientation, and the like of at least a set amount.