Abstract: There is provided a titanium alloy member including a base metal portion, and an outer hardened layer formed on an outer layer of the base metal portion, the cross sectional hardness of the base metal portion is 330 HV or higher and lower than 400 HV, the cross sectional hardnesses at positions 5 ?m and 15 ?m from the surface of the outer hardened layer are 450 HV or higher and lower than 600 HV, the outer hardened layer includes an oxygen diffusion layer and a nitrogen diffusion layer, the oxygen diffusion layer is at a depth of 40 to 80 ?m from the surface of the outer hardened layer, and the nitrogen diffusion layer is at a depth of 2 to 5 ?m from surface of the outer hardened layer. This titanium alloy member includes an outer hardened layer, is high in cross sectional hardness of the base metal portion, and is excellent in fatigue strength and wear resistance.

Abstract: Provided is a titanium casting product made of titanium alloy, the titanium casting product being produced by electron-beam remelting or plasma arc remelting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of ? stabilizer elements to the surface and melting and resolidifying the surface. An average value of ? stabilizer element concentration in a range of within 1 mm in depth is higher than ? stabilizer element concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the ? stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.

Abstract: The present invention provides a ?-type titanium alloy that includes, by mass %, when Al: 2 to 5%, 1) Fe: 2 to 4%, Cr: 6.2 to 11%, and V: 4 to 10%, 2) Fe: 2 to 4%, Cr: 5 to 11%, and Mo: 4 to 10%, or 3) Fe: 2 to 4%, Cr: 5.5 to 11%, and Mo+V (total of Mo and V): 4 to 10% in range, and a balance of substantially Ti. These include Zr added in amounts of 1 to 4 mass %. Furthermore, by making the oxygen equivalent Q 0.15 to 0.30 or leaving the alloy in the work hardened state or by applying both, the tensile strength before aging heat treatment can be further increased.

Abstract: The present invention provides a ?-type titanium alloy keeping the content of the relatively expensive ?-stabilizing elements such as V or Mo down to a total of 10 mass % or less and reducing the effects of composition segregation of Fe and Cr and thereby able to keep the Young's modulus and density relatively low. The ?-type titanium alloy of the present invention comprises, by mass %, when Al: 2 to 5%, 1) Fe: 2 to 4%, Cr: 6.2 to 11%, and V: 4 to 10%, 2) Fe: 2 to 4%, Cr: 5 to 11%, and Mo: 4 to 10%, or 3) Fe: 2 to 4%, Cr: 5.5 to 11%, and Mo+V (total of Mo and V): 4 to 10% in range, and a balance of substantially Ti. These include Zr added in amounts of 1 to 4 mass %. Furthermore, by making the oxygen equivalent Q 0.15 to 0.30 or leaving the alloy in the work hardened state or by applying both, the tensile strength before aging heat treatment can be further increased.

Abstract: Provided is an ?+? titanium alloy hot-rolled sheet consisting of, in mass %, Al: 4.7 to 5.5%, Fe: 0.5 to 1.4%, N: less than or equal to 0.03%, Si: 0.15 to 0.40%, a ratio of Si/O: 0.80 to 2.80, [O]eq in Expression (1): more than or equal to 0.13% and less than 0.25%, and the balance: Ti and impurities. In a case where an ND direction represents a normal direction of the hot-rolled sheet, a TD direction represents a sheet-width direction of the hot-rolled sheet, a c-axis orientation represents a normal direction of a (0001) plane in an ? phase, XND represents a strongest intensity among X-ray (0002) reflection relative intensities of crystal grains in which the c-axis orientation is in a range of 30° from the ND direction, and XTD represents a strongest intensity among intensities in which the c-axis orientation is in a range of ±10 degrees in the TD direction, XTD/XND is more than or equal to 4.

Abstract: Provided is a titanium cast product for hot rolling made of commercially pure titanium, the titanium cast product including a melted and resolidified layer in a range of more than or equal to 1 mm in depth on a surface serving as a rolling surface, the melted and resolidified layer being obtained by adding one or more elements out of any one of or both of at least one ? stabilizer element and at least one neutral element to the surface, and melting and resolidifying the surface. An average value of a total concentration of the at least one ? stabilizer element and the at least one neutral element in the range of more than or equal to 1 mm in depth is higher than a total concentration of the at least one ? stabilizer element and the at least one neutral element in a base metal by, in mass %, more than or equal to 0.1% and less than 2.0%.

Abstract: The present invention provides a heat resistant titanium alloy sheet excellent in cold workability having high temperature strength characteristics better than JIS Class 2 pure titanium and having a cold workability and high temperature oxidation resistance equal to or better than that of JIS Class 2 pure titanium and a method of production of the same, that is, a heat resistant titanium alloy sheet excellent in cold workability characterized by comprising, by mass %, 0.3 to 1.8% of Cu, 0.18% or less of oxygen, 0.30% or less of Fe, and, as needed, at least one of Sn, Zr, Mo, Nb, and Cr in a total of 0.3 to 1.5%, and the balance of Ti and less than 0.3% of impurity elements and by a ?-phase and Ti2Cu-phase being included in a volume percentage of 0 to 2% and, further, a method of production of that titanium alloy sheet characterized by performing the final annealing at 630 to 850° C. in temperature range or performing the hot-rolled sheet or coil annealing or intermediate annealing at 630 to 850° C.

Abstract: Provided is a titanium cast product for hot rolling made of commercial pure titanium or a titanium alloy, the titanium cast product including, in a surface serving as a rolling surface, a fine structure layer that is formed of an acicular structure formed in the outermost surface by melting and re-solidification treatment and that has a thickness of more than or equal to 5 mm and less than 9 mm in depth. In the titanium cast product for hot rolling according to the present invention, the surface is flat, the number of minute voids in the interior immediately below the surface is small, and the outermost surface has a significantly fine structure. When the titanium cast product is subjected to hot rolling, the occurrence of concavities on the surface in the early stage of hot rolling and the occurrence of surface defects on the hot rolled sheet can be stably prevented at a practical level.

Abstract: Provided is a titanium cast product made of commercially pure titanium, the titanium cast product being produced by electron-beam remelting or plasma arc melting, comprising: a melted and resolidified layer in a range of 1 mm or more in depth at a surface serving as a surface to be rolled, the melted and resolidified layer being obtained by adding one or more kinds of ? stabilizer elements to the surface and melting and resolidifying the surface. An average value of ? stabilizer element(s) concentration in a range of within 1 mm in depth is higher than ? stabilizer element(s) concentration in a base material by, in mass %, equal to or more than 0.08 mass % and equal to or less than 1.50 mass %. As the material containing the ? stabilizer element, powder, a chip, wire, or foil is used. As means for melting a surface layer, electron-beam heating and plasma arc heating are used.

Abstract: Provided is a method of processing a glass base material for optical fiber in which the glass base material for optical fiber is elongated to reduce a diameter thereof until reaching a final elongation diameter and form a completed base material. The method includes measuring an outer diameter distribution that includes an outer diameter of the glass base material for optical fiber; setting an effective region; calculating a target elongation diameter that is larger than the final elongation diameter and less than an average diameter of the effective region, and elongating the glass base material for optical fiber until reaching the target elongation diameter; and after reaching the target elongation diameter, further elongating the glass base material for optical fiber until reaching the final elongation diameter.

Abstract: A titanium-containing structure made of a titanium material includes: a package made of a commercially pure titanium material; and a filler packed into the package, wherein an internal pressure of the package is 10 Pa or less, the pressure being an absolute pressure, and wherein the filler includes at least one selected from titanium sponge, titanium briquet, and titanium scrap, and the filler has the same type of a chemical composition of the commercially pure titanium material. This titanium-containing structure enables production of a titanium product by performing hot working and eliminating the conventional melting step and forging step.

Abstract: The present invention provides a titanium slab for hot rolling which can be fed into a general purpose hot-rolling mill for producing strip coil, without passage through a breakdown process such as blooming or a straightening process, and can further suppress surface defect occurrence of the hot-rolled strip coil, and a method of producing and a method of rolling the same, characterized in that in the cast titanium slab an angle ? formed by the crystal growth direction (solidification direction) from the surface layer toward the interior and a direction parallel to the slab casting direction (longitudinal direction) is 45 to 90°, and moreover, there is a surface layer structure of 10 mm or greater whose ? is 70 to 90°, and further characterized in that a crystal grain layer of 10 mm or greater is formed whose C-axis direction inclination of a titanium ? phase is, as viewed from the side of the slab to be hot rolled, in the range of 35 to 90° from the normal direction of the surface to be hot rolled.

Abstract: “To provide, at low cost, a resource saving-type titanium alloy that uses alloy elements more abundant in resources and more inexpensively available compared to conventional titanium alloys, and, when added even in a smaller amount than the conventional alloys, can simultaneously realize both high strength and high toughness. Provided is a titanium alloy member having excellent strength and toughness, consisting of, in mass %, Al: more than or equal to 4.5% and less than 5.5%, Fe: more than or equal to 1.3% and less than 2.3%, Si: more than or equal to 0.25% and less than 0.50%, O: more than or equal to 0.05% and less than 0.25%, and the balance: titanium and unavoidable impurities. The titanium alloy member has a microscopic structure that is an acicular structure having an acicular ? phase with a mean width of less than 5 pm.

Abstract: An ?+? type hot-rolled titanium alloy sheet, wherein: (a) ND represents the normal direction of a hot-rolled sheet; RD represents the hot rolling direction; TD represents the hot rolling width direction; ? represents the angle formed between the orientation of c axis and the ND; ? represents the angle formed between a plane including the orientation of the c axis and the ND, and a plane including the ND and the TD; (b1) XND represents the highest (0002) relative intensity of the X-ray reflection caused by crystal grains when ? is from 0° to 30° and ? is within the entire circumference; (b2) XTD represents the highest (0002) relative intensity of the X-ray reflection caused by crystal grains when ? is from 80° to 100° and ? is ±10°. (c) The ?+? type titanium alloy sheet has a value for XTD/XND of at least 5.0.

Abstract: According to this radiography device, by taking images in rapid succession while appropriately obtaining the timing for which an X-ray tube in a rest state should be activated, rapid successive imaging and protection of a radioactive source can both be achieved. That is, in the configuration of the present invention, a time difference is calculated, obtained by subtracting a temporal width of an activation period from a temporal width of an undetectable period, and the time after the time difference has elapsed from the time at which an X-ray is irradiated is determined as the timing for activating the X-ray tube. The temporal width of an undetectable period is the temporal width between the time at which an FPD detects an X-ray once and the time at which the following X-ray can be detected, and the temporal width of an activation period is the temporal width between the start of activation of the X-ray tube to the completion of activation.

Abstract: The invention concerns a multilayer biaxially oriented white polyester film (adhesion, absence of chalking, opacity whiteness, reflectance, hydrolysis resistance & light stability) comprising three polyester layers: a core layer and two outer layers and contains TiO2 particles. In this film: at least one layer comprises a PET whose: number average molecular weight is within [18500-40000]; intrinsic viscosity IV is ?0.70 dL/g; and carboxyl group content is ?30 eq/T. Additionally, the core layer comprises TiO2 particles in a range of [0.1-40]% w/w; the intrinsic viscosity IV is between [0.5-0.85] dL/g; a small endothermic peak temperature is between 180-230° C.; and at least one light stabilizer is added in at least one of the outer layers, in a total concentration between [0.1-35]% w/w. The invention also includes the method for manufacturing such film and the laminate which is part of the back sheet of a solar cell.

Abstract: An ?+? type titanium alloy sheet to be used for a welded pipe with a rolling direction of the sheet set to a circumference direction of the pipe includes: a composition containing, in mass %, 0.8 to 1.5% of Fe, 4.8 to 5.5% of Al, 0.020% or less of N, O in a range satisfying Q=0.14 to 0.

Abstract: Provided is an ?+? titanium alloy welded pipe excellent in the strength and the rigidity in the pipe longitudinal direction, the ?+? titanium alloy welded pipe having a composition consisting of, in mass %, Fe: 0.8% to 1.5%, N: 0.02% or less, and the balance: Ti and impurities, and satisfying Q shown in Formula (1) being 0.34 to 0.55. A tensile strength in a pipe longitudinal direction is more than 900 MPa and a Young's modulus in the pipe longitudinal direction is more than 130 GPa. Q=[O]+2.77×[N]+0.1×[Fe]??(1) where [Fe], [O], and [N] represent the amounts of the respective elements contained [mass %].

Abstract: A semiconductor chip is mounted on a first surface of an interconnect substrate, and has a multilayer interconnect layer. A first inductor is formed over the multilayer interconnect layer, and a wiring axis direction thereof is directed in a horizontal direction to the interconnect substrate. A second inductor is formed on the multilayer interconnect layer, and a wiring axis direction thereof is directed in the horizontal direction to the interconnect substrate. The second inductor is opposite to the first inductor. A sealing resin seals at least the first surface of the interconnect substrate and the semiconductor chip. A groove is formed over the whole area of a portion that is positioned between the at least first inductor and the second inductor of a boundary surface of the multilayer interconnect layer and the sealing resin.

Abstract: A glass base material elongating method of elongating a glass base material to make a diameter of the glass base material smaller by connecting a pulling dummy at an end of the glass base material and then gripping and pulling the pulling dummy with a pair of rollers that grip or release the pulling dummy is provided. The method includes forming a rough surface part on the pulling dummy before elongating the glass base material. The rough surface part may be formed by grinding the pulling dummy. Also, the rough surface part of the pulling dummy may have a roughness of 5 ?m or more.