Abstract: A hot stamping method for pre-coated steel plate comprises performing a preliminary heat treatment on the pre-coated steel plate before hot stamping. The preliminary heat treatment comprising: (1) a step of heating and temperature holding involving: heating the pre-coated steel plate to 850-920° C. and holding the temperature for 7 to 15 minutes, or heating to 920-960° C. and holding the temperature for 5 to 10 minutes; (2) cooling the pre-coated steel plate to below 300° C. after the step of heating and temperature holding at a cooling rate not less than 5° C./s; and (3) optionally repeating the step of heating and temperature holding and the step of cooling one or more times. The preliminary heat treatment increases the alloying degree of the pre-coating layer, reduces the carbide structures in the steel plate matrix, and obtains a martensite and/or bainite matrix structure, so as to reduce damage to a stamping die.

Abstract: A method of pushing information, a computer device and a storage medium are provided. The method includes: acquiring a plurality of real-time multimedia contents corresponding to each broadcast subject of at least one broadcast subject, wherein the multimedia contents correspond to at least one of a plurality of genres; for each broadcast subject, generating text information corresponding to the each broadcast subject based on the multimedia contents corresponding to the each broadcast subject; inputting a constraint condition and the text information corresponding to the each broadcast subject into a content generation model to obtain a target broadcast content corresponding to the each broadcast subject; and in response to satisfying a push trigger condition of a target broadcast subject of the at least one broadcast subject, pushing a target broadcast content under the target broadcast subject to a target user.

Abstract: A method of pushing information, a computer device and a storage medium are provided. The method includes: acquiring a plurality of real-time multimedia contents corresponding to each broadcast subject of at least one broadcast subject, wherein the multimedia contents correspond to at least one of a plurality of genres; for each broadcast subject, generating text information corresponding to the each broadcast subject based on the multimedia contents corresponding to the each broadcast subject; inputting a constraint condition and the text information corresponding to the each broadcast subject into a content generation model to obtain a target broadcast content corresponding to the each broadcast subject; and in response to satisfying a push trigger condition of a target broadcast subject of the at least one broadcast subject, pushing a target broadcast content under the target broadcast subject to a target user.

Abstract: The present disclosure provides an information processing method and apparatus, an electronic device, and a storage medium. The method includes: acquiring a target functional tool to be displayed and a distribution style of the target functional tool, in which different target functional tools are configured to answer questions in different vertical scenarios, and the distribution style is any one of: including a functional tool identifier and a question sample, and including a functional tool identifier and a multi-round conversation sample; and displaying the target functional tool in a target page according to the distribution style of the target functional tool.

Abstract: A method of information processing, an electronic device and a storage medium are provided. The method includes: receiving input information to be processed; acquiring a target answer result of the information to be processed, wherein the target answer result is generated based on a generative model and a target plugin, a cooperative mode in which the generative model and the target plugin generate the target answer result is related to an implementation requirement of a capability of the target plugin, and the target plugin is a plugin that matches with the information to be processed and is used to answer the information to be processed; and displaying the target answer result.

Abstract: A method for content generation, a computer device and a storage medium are provided. The method includes: acquiring input information to be answered; according to a target scenario category to which the information to be answered belongs, acquiring model assistant information that matches the target scenario category, wherein the model assistant information includes weight indicator information, and the weight indicator information is used for indicating corresponding generation weights under a plurality of generation angles when sequentially generating each character in answer content information; and using an artificial intelligence model to generate target answer content information according to the information to be answered and the model assistant information.

Abstract: The present invention provides an antibacterial and antiviral copper-containing stainless steel, and a preparation method for and the use of a stainless-steel conforming to the composition thereof. The copper-containing stainless steel comprises a stainless steel matrix and a copper-rich phase evenly distributed in the stainless steel matrix, wherein the copper content of the copper-containing stainless steel is 6-30 wt %. The preparation method therefor comprises the manufacturing of a small stainless steel product mainly using powder metallurgy technology, and the manufacturing of a large stainless steel sheet, bar or pipe mainly using a composite process without significant thermal deformation.

Abstract: An Al—Si coated press hardening component, wherein the Al—Si coating comprises a low-Al content ferrite layer with an Al content of less than 5 wt % and a thickness of greater than 5 ?m, and having a maximum bending angle of the Al—Si coated press hardening component is greater than 65°. The thickness of the tough low-Al content ferrite layer in the Al—Si coating after hot stamping, reaching 5-100 ?m, by improving the hot stamping process, so that the formation or propagation of cracks on the surface or the coating is effectively prevented, and the bendability of the pre-coated steel after hot stamping is improved. At the same time, the hot stamping process of the present invention can take into account or optimize the microstructure of the steel substrate to further improve the bendability and tensile property of the whole material.

Abstract: A strong and ductile automotive steel comprising 8-11 wt. % Mn, 0.1-0.35 wt. % C, 1-3 wt. % Al, 0.05-0.5 wt. % V, and a balance of Fe. By tuning the amount of austenite stabilizers, a dual phase microstructure of martensite and austenite with proper phase fraction can be achieved at room temperature. The martensite partitions C into the retained austenite grains. The martensite matrix can ensure the higher strength of automotive steel while the retained austenite grains with varied mechanical stability can improve the ductility of automotive steel, achieving the strength of 1500 MPa and the ductility of 20% simultaneously. The method for fabricating this automotive steel circumvents the high quenching temperature of conventional Q&P steels and therefore reduces the production price and is easy for mass production.

Abstract: Disclosed is a method of bonding two copper structures involving compressing a first copper structure with a second copper structure under a stress from 0.1 MPa to 50 MPa and under a temperature of 250° C. or less so that a bonding surface of the first copper structure is bonded to the bonding surface of the second copper structure. At least one of the bonding surface of the first copper structure and the bonding surface of the second copper structure have a layer of nanograins of copper having an average grain size of 5 nm to 500 nm. The layer of the nanograins of copper having a thickness of 10 nm to 10 ?m.

Abstract: Disclosed is a method of bonding two copper structures involving compressing a first copper structure with a second copper structure under a stress from 0.1 MPa to 50 MPa and under a temperature of 250° C. or less so that a bonding surface of the first copper structure is bonded to a bonding surface of the second copper structure; at least one of the bonding surface of the first copper structure and the bonding surface of the second copper structure have a layer of nanograins of copper having an average grain size of 5 nm to 500 nm, the layer of the nanograins of copper having a thickness of 10 nm to 10 ?m.

Abstract: A bilayer passive film structure of a substrate, comprising an inner layer comprising an oxide of a first element, and an outer layer comprising an oxide of a second element, wherein the passivation potential of the first element is lower than the passivation potential of the second element, and the passivation potential of the second element is lower than the transpassivation potential of the first element. Also a method of forming the above bilayer passive film structure of a substrate, comprising: treating a surface of the substrate containing Cr and Mn. Further a stainless steel comprises, in percentage by weight, 15%<Cr<22%, 13%<Mn<23%, 12%<Ni<23%, and 0.5%<Si<4%, wherein Si can be replaced with an equal amount of Al, Ti or V.

Abstract: An ultra-strong, ductile and cheap medium manganese steel comprises in percentage by mass: 8-12 wt. % Mn, 0.2-0.4 wt. % C, 1-3 wt. % Al, 0.05-0.39 wt. % V, and the balance of Fe. The manufacturing method of the ultra-strong and ductile medium manganese steel includes the steps of: (a) hot rolling an ingot at 900-1200° C. into a steel sheet (or plate, or bar); (b) air cooling or water quenching the steel sheet to room temperature or warm rolling temperature, (c) warm rolling the steel sheet at 350-750° C. with 30-60% thickness reduction; (d) air cooling or water quenched the steel sheet to room temperature; (e) annealing the steel sheet at 600-650° C. for 0-300 minutes and (f) air cooling or water quenched the sheet to room temperature.

Abstract: The present invention provides a non-magnetic stainless steel with high strength and corrosion resistance and a preparation method thereof. The non-magnetic stainless steel composed of the following components according to percentage by weight: 17%<Cr<23%, 17%<Mn<23%, 17%<Co<23%, 0.5%<Si <3%, and the balance of iron and inevitable impurities thereof. The preparation method includes: (1) melting a raw material and casting it to a mold to obtain a stainless steel block; (2) homogenizing the stainless steel block at 1,100-1,250° C. for 6-12 hours; (3) forging the homogenized stainless steel block at 1,050-1,150° C. with a final forging temperature of 850-950° C. to obtain a plate having a thickness of 5-15 mm; and (4) holding the forged plate at 1,000-1,250° C. for 10-30 minutes and then put it in water for quenching. The non-magnetic stainless steel of the present invention has superior pitting corrosion resistance and mechanical properties.

Abstract: 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.

Abstract: The invention describes a two-phase steel comprising 8-12 wt. % Mn, 0.3-0.6 wt. % C, 1-4 wt. % Al, 0.4-1 wt. % V, and a balance of Fe. The steel has martensite and retained austenite phases, and may include vanadium carbide precipitations. A method for making the two-phase steel involves the steps of (a) hot rolling the ingots of the composition to produce a plurality of thick steel sheets, (b) treating the steel sheets by an air cooling process, (c) warm rolling the steel sheets at a temperature in the range of 300-800° C. with a thicknesses reduction of 30-50%, (d) annealing the steel sheets a first time at a temperature in the range of 620-660° C. for 10-300 min, (e) cold rolling the steel sheets at room temperature with a thickness reduction of 10-30% to generate hard martensite, and (f) annealing the steel sheets a second time at a temperature in the range of 300-700° C. for 3-60 min to facilitate the partitioning of carbon and release the residual stress n martensite.

Abstract: A strong and ductile automotive steel comprising 8-11 wt. % Mn, 0.1-0.35 wt. % C, 1-3 wt. % Al, 0.05-0.5 wt. % V, and a balance of Fe. By tuning the amount of austenite stabilizers, a dual phase microstructure of martensite and austenite with proper phase fraction can be achieved at room temperature. The martensite partitions C into the retained austenite grains. The martensite matrix can ensure the higher strength of automotive steel while the retained austenite grains with varied mechanical stability can improve the ductility of automotive steel, achieving the strength of 1500 MPa and the ductility of 20% simultaneously. The method for fabricating this automotive steel circumvents the high quenching temperature of conventional Q&P steels and therefore reduces the production price and is easy for mass production.

Abstract: The invention describes a dual-phase steel comprising 8-12 wt. % Mn, 0.3-0.6 wt. % C, 1-4 wt. % Al, 0.4-1 wt. % V, and a balance of Fe. The steel has martensite and retained austenite phases, and may include vanadium carbide precipitations. A method for making the dual-phase steel involves the steps of (a) hot rolling the ingots of the composition to produce a plurality of thick steel sheets, (b) treating the steel sheets by an air cooling process, (c) warm rolling the steel sheets at a temperature in the range of 300-800° C. with a thicknesses reduction of 30-50%, (d) annealing the steel sheets a first time at a temperature in the range of 620-660° C. for 10-300 min, (e) cold rolling the steel sheets at room temperature with a thickness reduction of 10-30% to generate hard martensite, and (f) annealing the steel sheets a second time at a temperature in the range of 300-700° C. for 3-60 min to form the dual-phase steel.

Abstract: A high strength dual-phase TRIP steel includes 8-12 wt. % Mn, 0.4-0.6 wt. % C, 1-3 wt. % Al, 0.5-1 wt. % V, and a balance of Fe. A method for making the high strength dual-phase TRIP steel is also provided.