17 results about "Misorientation" patented technology

To provide a steel sheet having high strength and excellent toughness, and a method for producing the same.SOLUTION: The steel sheet has the chemical composition described in the specification, where Ceq is 0.25-0.60%, and BF' is more than 0%. In a C cross section, the metal structure at a position of 1 / 4t includes bainite in an amount of 70% or more in terms of area%, and an average grain size of bainitic ferrite constituting the bainite is 10 μm or less. Among the bainitic ferrite grains, a proportion of bainitic ferrite grains having an intragranular orientation difference of less than 5° is 1% or more and less than 30% in terms of area%. An average grain size of parent phase austenite obtained by inverse analysis from crystal orientation information of a matrix structure is 80 μm or less. A number density of B-containing precipitates having a grain size of 1 μm or more present on crystal grain boundaries of the parent phase austenite is 30 particles / mm or less.SELECTED DRAWING: None

The invention relates to a method for measuring dendritic crystal orientation deviation of a single crystal blade through monochromatic neutron diffraction imaging, which accurately captures crystal structure information through neutron diffraction, can clearly obtain diffraction signals of different areas of the single crystal blade, and can accurately measure the orientation deviation of defective crystal grains through the steps of defect position determination, bright spot matching and the like. By utilizing the deep penetrability and volatility of neutrons, the interior of the blade can be detected under the condition that the single crystal blade is not damaged. Meanwhile, the neutron imaging detection range is larger than that of a traditional X-ray method, overall imaging of the single crystal blade can be achieved, operation such as data cutting and splicing is not needed, the result is more visual and accurate, and consumed time is shorter.

The present disclosure relates to a method of manufacturing a diamond substrate that comprises a {111}-plane surface. The method comprises: - fabricating a plurality of mesa structures on a main diamond substrate, wherein the main diamond substrate comprises a first surface that has a planar orientation that has a misorientation angle relative to the {111} surface; - growing diamond on the first surface of the main diamond substrate by applying a vapor-phase synthesis method on at least the first surface of the main diamond substrate; - cutting the main diamond substrate along the {111} plane such that a distance between the first surface and a second surface that is arranged opposite of the first surface is reduced; and - removing material from the second surface until the main diamond substrate is separated in a plurality of diamond substrates that correspond to the plurality of mesa structures.

Proposed are a thin film having an excellent crystal orientation property, a method of manufacturing the same, and a semiconductor device, a battery device, a superconducting wire, and a superconducting article including the thin film. The technical gist of the present disclosure includes a thin film having a single-crystal-level crystal orientation property, which is formed by depositing a polycrystalline second material on an upper portion of a substrate including a polycrystalline first material and which has a crystal orientation property satisfying the following Relational Expression 1 at a grain boundary, a method of manufacturing the same, and a semiconductor device, a battery device, a superconducting wire, and a superconducting article including the thin film.0°<FWHM2≤3°  [Relational Expression 1](FWHM2 is a full width at half maximum of a distribution curve of a misorientation angle at the grain boundary of the thin film).

To provide a steel plate capable of achieving superior Charpy toughness in a HAZ produced by high heat-input welding, together with superior strength at a 1 / 2 thickness position of a base material and superior Charpy toughness after strain aging treatment, and to provide a method for producing the steel plate.SOLUTION: A steel plate has a component composition containing predetermined amounts of C, Si, Mn, P, S, Al, Ti, N, and O, with Ceq being 0.300-0.500%, Ti / N being 2.00-5.00, and the balance being Fe and inevitable impurities, and has, at a 1 / 2 thickness position, a steel microstructure in which ferrite+bainite phases account for 80% or more in area ratio, an average grain size of ferrite and bainite phases surrounded by grain boundaries having an orientation difference of 15° or more is 30 μm or less, and an area ratio of MA in the bainite phase is 15% or less.SELECTED DRAWING: None

A metallic structure, a method of preparing the metallic structure, and the electronic device including the metallic structure. The metallic structure includes a ruthenium (Ru) thin film disposed on an insulation film or a contact metal, where the ruthenium thin film has a crystal structure including grains having a (001) orientation, neighboring grains among the grains in the thin film have a misorientation angle of less than or equal to about 15° at a grain boundary based on a horizontal direction of the thin film.

The steel sheet is characterized by having a metal structure having a predetermined chemical composition, containing, by area ratio, 70 to 95% bainite and 3 to 20% martensite, the total of bainite and martensite being 90% or more, the average misorientation within crystal grains surrounded by grain boundaries with a crystal misorientation of 15° or more being 0.60° or less, and the proportion of crystal grains containing two or more martensite grains within the grains being 90% or more.

To provide a support substrate, an electronic device, and a module which are applied to a frequency band of 3.5 GHz or more for effectively reducing the energy of longitudinal wave transmission, effectively reducing spurious reflection, and realizing normal filtering.SOLUTION: In the polycrystalline material which is the material of the support substrate of the present invention, the number of small-angle grain boundaries having a misorientation angle of 2 to 15 ° in the support substrate accounts for 1 to 5% of the total number of grain boundaries. Accordingly, the support substrate having the specific occupancy of the small-angle grain boundaries is able to effectively reduce or prevent spurious responses to ensure normal filtering.SELECTED DRAWING: None

To provide a steel sheet having high strength and excellent toughness, and a method for producing the same.SOLUTION: The steel sheet has the chemical composition described in the specification, where Ceq is 0.25-0.60%, and BF' is more than 0%. In a C cross section, the metal structure at a position of 1 / 4t includes bainite in an amount of 70% or more in terms of area%, and an average grain size of bainitic ferrite constituting the bainite is 10 μm or less. Among the bainitic ferrite grains, a proportion of bainitic ferrite grains having an intragranular orientation difference of less than 5° is 1% or more and less than 30% in terms of area%. An average grain size of parent phase austenite obtained by inverse analysis from crystal orientation information of a matrix structure is 80 μm or less. A number density of B-containing precipitates having a grain size of 1 μm or more present on crystal grain boundaries of the parent phase austenite is 30 particles / mm or less.SELECTED DRAWING: None

A support substrate, a composite substrate, an electronic device, and a module are provided, the support substrate is made of a polycrystalline material, a number of small-angle grain boundary with a misorientation angle of 2° to 15° in the support substrate accounts for 1% to 5% of a total number of grain boundaries, and the support substrate with the specific small-angle grain boundary proportion can effectively suppress spurious signals and ensure normal filtering.

A method for implementing a photovoltaic device comprising: - measuring a misorientation angle θmes of a given lateral face (41d) of a rectangular or square crystalline silicon wafer with respect to a crystalline orientation '(110)', - forming conductive tracks (55, 57, 59) on the upper face, oriented to achieve a given angle α with respect to at least one first lateral face (41e) among said lateral faces, determined according to said measured misorientation angle θmes, then - performing a cleaving step to separate said wafer (40) into a first portion and a second portion. Figure for the abstract: 6.

The present invention relates to a method for measuring the crystal orientation difference of a single-crystal blade (10), the blade (10) comprising a material formed of dendrites (30) having a trunk (32) and branches (34) extending in a principal direction (Z'), the method comprising: defining a reference coordinate system (XYZ) for the blade, the reference coordinate system including a radial direction (Z); mechanically and chemically treating the blade (10) in a base plane (P1) to acquire a first image (I1) by photomicrography; mechanically and chemically treating the blade (10) in a comparison plane (P2) offset radially from the base plane (P1) by a distance (D) to acquire a second image (I2) by photomicrography; and processing the first and second images (I1, I2) to compare the position of the trunk (32) of each dendrite (30) in the two images (I1, I2) and thereby derive the orientation of the principal direction (Z') of the dendrite (30) relative to the radial direction (Z).

An example method includes measuring, by at least one of a polarized light device, a spatially resolved acoustic spectroscopy device, or an eddy current device, an alpha phase data set indicative of an alpha phase of a crystalline structure of a material. The method includes receiving, by processing circuitry, the alpha phase data set, wherein the alpha phase data set comprises a plurality of pixels, wherein each pixel of the plurality of pixels includes a position, a first Euler angle, a second Euler angle, and a third Euler angle, wherein the third Euler angle is missing or erroneous. The method also includes adjusting, by the processing circuitry, the third Euler angle of a pixel of the plurality of pixels and storing, by the processing circuitry and based on adjusting the third Euler angle of the pixel reducing a total beta phase misorientation, the alpha phase data set.

Provided is a steel sheet characterized by having a predetermined chemical composition and a metallographic structure, wherein, in terms of area fraction, the structure comprises 70% to 95% of bainite and 3% to 20% of martensite, the sum of bainite and martensite is 90% or above, the average intragranular misorientation of crystal grains surrounded by grain boundaries with a crystal orientation difference of 15° or above is 0.60° or below, and the proportion of crystal grains containing two or more martensite grains therein is 90% or above.

The invention belongs to the field of rare earth permanent magnet materials, and particularly relates to a method for evaluating the orientation degree of a sintered neodymium-iron-boron magnet. The method comprises the following steps: carrying out electron backscatter diffraction (EBSD) analysis on the neodymium iron boron magnet, and carrying out electron backscatter diffraction (EBSD) analysis on the neodymium iron boron magnet; euler angle data obtained by the EBSD test are converted into an included angle theta i between a crystal grain c axis and an orientation field direction through mathematical transformation; the method comprises the following steps: carrying out automatic segmentation on an EBSD image by utilizing an image segmentation large model (SAM) to obtain a high-precision segmentation mask of each crystal grain; traversing the acquisition points in the mask of each crystal grain to obtain a staggered orientation angle of each crystal grain; and carrying out statistics on error orientation angles of all crystal grains, drawing a frequency distribution histogram and a cumulative distribution histogram of the error orientation angles, and outputting an orientation degree analysis report. The method for evaluating the orientation degree of the sintered neodymium-iron-boron magnet is established by combining EBSD and SAM image segmentation technologies, and the method has the advantages of high accuracy and high efficiency at the same time.

The present application relates to a method for growing a misoriented silicon carbide single crystal by a liquid phase method, and belongs to the technical field of silicon carbide single crystal production. The method is performed by using a device for growing a silicon carbide single crystal by a liquid phase method, the device comprising a wedge-shaped seed crystal holder and a wedge-shaped seed crystal. The method comprises: arranging the wedge-shaped seed crystal on the wedge-shaped seed crystal holder to form a normal-oriented seed crystal surface, and then growing silicon carbide on the normal-oriented seed crystal surface by a liquid phase method to obtain a crystal ingot comprising the wedge-shaped seed crystal and a grown silicon carbide crystal; and taking the crystal ingot off the wedge-shaped seed crystal holder, and performing multi-wire slicing based on the inclined surface of the wedge-shaped seed crystal to obtain a misoriented silicon carbide single crystal. The method of the present application forms a normal-oriented seed crystal surface by using the wedge-shaped seed crystal and the wedge-shaped seed crystal holder for liquid phase growth, and then obtains a misoriented silicon carbide single crystal by multi-wire slicing. The method of the present application does not require a crystal orientation step, can reduce the process of misoriented single-wire slicing or flat grinding, saves processing time, and can recycle the new wedge-shaped seed crystal.

An electric resistance welded steel pipe includes a base metal zone and an electric resistance welded zone. The base metal zone has a predetermined chemical composition and a microstructure including, by volume, ferrite: more than 30%, and bainite: 10% or more. The total volume fraction of the ferrite and the bainite is 70% or more and 95% or less. The balance being one or two or more phases selected from pearlite, martensite, and austenite. Further, when regions surrounded by boundaries between adjacent crystals having a misorientation of 15° or more are defined as crystal grains, the average size of the crystal grains is less than 7.0 μm, and the volume fraction of crystal grains having a size of 40.0 μm or more is 30% or less. A compressive residual stress generated in the inner and outer surfaces of the steel pipe in the axial direction is 250 MPa or less.