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Effect of plastic deformation on diffusion-rolling bonding of steel sandwich plates 被引量:1
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作者 Hong Li Jingtao Han 《Journal of University of Science and Technology Beijing》 CSCD 2006年第6期532-537,共6页
Diffusion bonding is one of the most important techniques for composite materials, while bonding temperature, holding time,and rolling reduction are the key parameters that affect the bonding strength of sandwich plat... Diffusion bonding is one of the most important techniques for composite materials, while bonding temperature, holding time,and rolling reduction are the key parameters that affect the bonding strength of sandwich plates. To study the effect of plastic deformation on the bonding strength, laboratory experiments were carried on a Gleeble Thermal Simulator to imitate the diffusion-rolling bonding under different reductions for steel sandwich plates. The bonding strength and interlayer film thickness were measured, and the element diffusion was analyzed using line scanning. The relationship between the bonding strength and “diffused interlayer” thickness was investigated. It has been found that the bonding strength increases with reduction, whereas the interlayer film thickness decreases gradually as the reduction increases. The diffusion under plastic deformation is obviously enhanced in comparison with that of nil reduction. The mechanism of plastic deformation effect on the diffusion bonding and related models have been discussed. 展开更多
关键词 steel sandwich plate diffusion-bonding plastic deformation bonding strength interlayer film thickness diffusion mechanism models
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Immersing Treatment of Steel Plate Surface in Steel-Aluminum Solid to Liquid Bonding 被引量:2
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作者 Peng Zhang Yunhui Du +4 位作者 Xueping Ren Yonglin Kang Hanwu Liu Jianzhong Cui Limin Ba (Material Science and Engineering School, University of Science and Technique Beijing, Beijing 100083, China)(Metal Forming Department Northeastern University, Shenyang 1 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 1999年第1期57-60,共4页
The interfacial status of the steel-aluminum solid to liquid bonding plates (their steel plate surfaces were or were not immersed in flux aqueous solution) were measured by using SEM (Scanning Electron Microscope) and... The interfacial status of the steel-aluminum solid to liquid bonding plates (their steel plate surfaces were or were not immersed in flux aqueous solution) were measured by using SEM (Scanning Electron Microscope) and X-ray diffraction . The results showed that the layer of flux (the minimum thickness was 15 μm on the steel plate surface) could protect the steel plate surface from oxidizing effectively at high temperature in solid to liquid bonding. The melt temperatUre of the flux should be lower than 580 ℃ so that it could be melted and removed completely. No. 1 flux (patent product made by the author) made up of halogeindes could also force liquid aluminum to infiltrate into steel plate surface and thus the interfacial shear strength of the bonding plate was rather large. 展开更多
关键词 steel-aluminum solid to liquid bonding plate steel plate surface immerse flux melt temperature interfacial shear shrength
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Microstructure and properties of S30403+Q345R roll-bonded clad steel plate for pressure vessels 被引量:2
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作者 HOU Hong ZHANG Hanqian JIAO Sihai 《Baosteel Technical Research》 CAS 2017年第1期40-48,共9页
To meet the demand of the domestic pressure vessel industry for roll-bonded clad steel plates, Baosteel has developed an S30403 + Q345R roll-bonded clad steel plate. Comprehensive inspections of the composition, micr... To meet the demand of the domestic pressure vessel industry for roll-bonded clad steel plates, Baosteel has developed an S30403 + Q345R roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are made to systematically evaluate the steel plate in the normalized and normalized + stress relieved states. The results show the cladding interface of the S30403 + Q345R roll-bonded clad steel plate has high shear strength, the base metal has good properties, and the mechanical properties of the steel plate head and tail are uniform. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels. 展开更多
关键词 pressure vessel S30403 Q345R roll-bonded clad steel plate normalized stress relieved PROPERTY
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Study on process of roll bonding stainless and carbon steel under non-vacuum condition
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作者 Zhao Fei Wu Zhisheng Niu Xinghai 《China Welding》 EI CAS 2014年第2期46-50,共5页
The non-vacuum roll bonding method of nickel plating on the base materials is put forward in accordance with the primary problems existed in the roll bonding of stainless/carbon steel. After nickel plating test on the... The non-vacuum roll bonding method of nickel plating on the base materials is put forward in accordance with the primary problems existed in the roll bonding of stainless/carbon steel. After nickel plating test on the base materials, the microstructure of nickel cladding is observed by scanning electron microscopy (SEM) at high, and room temperature, and the results show that the nickel cladding on base material can be protected from oxidation in the high temperature. Non-vacuum roll bonding tests of nickel plating on base materials are done by the roll bonding equipment, and the roll bonding plates of stainless/carbon steel are obtained. The microstructure and the elements distribution of non-vacuum roll bonding interface are analyzed by optical microscope (OM) and SEM. The results reflect that the nickel plating layer and the base materials bond well. 展开更多
关键词 non-vacuum hot-roll bonding stainless and carbon steel plates
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The Influence of Preheat Temperature of Steel Plate on Steel-mushy Cu-graphite Bonding
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作者 张鹏 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2006年第3期12-14,共3页
The pressing bonding of steel plate to QTi3.5-3.5 graphite slurry was conducted. Under the conditions of 530 ℃ for the preheat temperature of dies, 45% for the solid fraction of QTi3.5- 3.5 graphite slurry, 50 MPa fo... The pressing bonding of steel plate to QTi3.5-3.5 graphite slurry was conducted. Under the conditions of 530 ℃ for the preheat temperature of dies, 45% for the solid fraction of QTi3.5- 3.5 graphite slurry, 50 MPa for the pressure and 2 min for the pressing time, the relationship between the preheat temperature of steel plate and interfacial mechanical property of bonding plate was studied. The results show that when the preheat temperature of steel plate is lower titan 618 ℃ , the interfacial shear strength of bonding plate increases with the increasing of the preheat temperature of steel plate. When the preheat temperature of steel plate is higher than 618 ℃ , the interfacial shear strength decreases with the increasing of the preheat temperature of steel plate. When the preheat temperature of steel plate is 618 ℃ , the highest interfacial shear strength of bonding plate of 127.8 MPa can be got. 展开更多
关键词 steel-mushy QTi3.5-3.5 graphite pressing bonding interfacial shear strength preheat temperature of steel plate
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Influence of aluminum solid fraction on property of steel-mushy aluminum bonding plate
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作者 Peng Zhang Yunhui Du +4 位作者 Xueping Ren Yonglin Kang Hanwu Liu Jianzhong Cui Limin Ba(Material Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China)(Metal Forming Department, Northeastern University, Shenyang 110006 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 1999年第3期193-195,共3页
The interfacial shear property of steel-mushy aluminum bonding plate was studied, and the relationship between aluminum solid fraction and the interfacial shear strength of bonding plate was determined. The results sh... The interfacial shear property of steel-mushy aluminum bonding plate was studied, and the relationship between aluminum solid fraction and the interfacial shear strength of bonding plate was determined. The results showed that when aluminum solid fraction is 34.3 %, the maximum interfacial shear strength of bonding plate is 71 .0 MPa. 展开更多
关键词 steel-mushy aluminum bonding plate solid fraction interfacial shear strength
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Semi-solid Processing of Steel-Al-7 Graphite Binding Plate 被引量:2
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作者 张鹏 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第3期46-49,共4页
The bonding of steel plate to Al 7graphite slurry was studied for the first time. The relationship model about preheat temperature of steel plate,solid fraction of Al 7graphite slurry, rolling speed and interfacial ... The bonding of steel plate to Al 7graphite slurry was studied for the first time. The relationship model about preheat temperature of steel plate,solid fraction of Al 7graphite slurry, rolling speed and interfacial shear strength of bonding plate could be established by artificial neural networks perfectly.This model could be optimized with a genetic algorithm.The optimum bonding parameters are:516℃ for preheat temperature of steel plate,32.5% for solid fraction of Al 7graphite slurry and 12mm/s for rolling speed,and the largest interfacial shear strength of bonding plate is 70.6MPa. 展开更多
关键词 bonding of steel plate to Al 7graphite slurry artificial neural networks genetic algorithm
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Development of S11306+SA516Gr70 roll-bonded clad steel plate for pressure vessels 被引量:1
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作者 HOU Hong ZHANG Hanqian ZHANG Aiwen 《Baosteel Technical Research》 CAS 2017年第2期42-48,共7页
To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 + SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performe... To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 + SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performed to systematically evaluate the steel plate in normalized state and normalized + stress relieved state. The results show the cladding interface of the Sl1306 + SA516Gr70 roll-bonded clad steel plate has high shear strength, and the base metal has good mechanical properties. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels. 展开更多
关键词 pressure vessel S 11306 SA516Gr70 roll-bonded clad steel plate normalized SR PROPERTY
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The Bonding Properties of Solid Steel to Liquid Aluminum
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作者 张鹏 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第1期25-29,共5页
The bonding of solid steel plate to liquid al uminum was studied using rapid solidification. The relationship models of interf acial shear strength and thickness of interfacial layer of bonding plate vs bond ing para... The bonding of solid steel plate to liquid al uminum was studied using rapid solidification. The relationship models of interf acial shear strength and thickness of interfacial layer of bonding plate vs bond ing parameters (such as preheat temperature of steel plate, temperature of alumi num liquid and bonding time) were respectively established by artificial neural networks perfectly.The bonding parameters for the largest interfacial shear stre ngth were optimized with genetic algorithm successfully. They are 226℃ for preh eating temperature of steel plate, 723℃ for temperature of aluminum liquid and 15.8s for bonding time, and the largest interfacial shear strength of bonding pl ate is 71.6 MPa . Under these conditions, the corresponding reasonable thickne ss of interfacial layer (10.8μm) is gotten using the relationship model establi shed by artificial neural networks. 展开更多
关键词 bonding of steel plate to liquid aluminum rapid solidification artificial neural networks genetic algorithm
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Thickness of compound layer in steel-aluminum solid to liquid bonding
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作者 PengZhang YunhuiDu +4 位作者 HanwuLiu ShumingXing DabenZeng JianzhongCui LiminBa 《Journal of University of Science and Technology Beijing》 CSCD 2003年第5期48-52,共5页
The bonding of solid steel plate to liquid aluminum was studied using rapidsolidification. The surface of solid steel plate was defatted, descaled, immersed (in K_2ZrF_6 fluxaqueous solution) and stoved. In order to d... The bonding of solid steel plate to liquid aluminum was studied using rapidsolidification. The surface of solid steel plate was defatted, descaled, immersed (in K_2ZrF_6 fluxaqueous solution) and stoved. In order to determine the thickness of Fe-Al compound layer at theinterface of steel-aluminum solid to liquid bonding under rapid solidification, the interface ofbonding plate was investigated by SEM (Scanning Electron Microscope) experiment. The relationshipbetween bonding parameters (such as preheat temperature of steel plate, temperature of aluminumliquid and bonding time) and thickness of Fe-Al compound layer at the interface was established byartificial neural networks (ANN) perfectly. The maximum of relative error between the output and thedesired output of the ANN is only 5.4%. From the bonding parameters for the largest interfacialshear strength of bonding plate (226℃ for preheat temperature of steel plate, 723℃ for temperatureof aluminum liquid and 15.8 s for bonding time), the reasonable thickness of Fe-Al compound layer10.8 μm was got. 展开更多
关键词 bonding of steel plate to liquid aluminum rapid solidification thickness ofFe-Al compound layer artificial neural networks
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Study on Interactive Computer Program for Seismic Appraisal and Seismic Strengthening of R.C. Frame Structures
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作者 殷杰 梁书亭 +1 位作者 蒋永生 尹贵宏 《Journal of Southeast University(English Edition)》 EI CAS 2002年第3期238-240,共3页
In many cases, seismic appraisal of existing structures is carried out by the two step method and seismic strengthening of R.C. frame structures is solved just based on rough calculation or experience of designers, wh... In many cases, seismic appraisal of existing structures is carried out by the two step method and seismic strengthening of R.C. frame structures is solved just based on rough calculation or experience of designers, which may lead to either lack of safety or too conservative in design. According to some related criteria and experts experience, a computer program is developed specially for seismic appraisal and seismic strengthening of R.C. frames (not more than 10 storeys) in this paper. Because the progra... 展开更多
关键词 adhering steel plate bonding angles steel jacketing with R.C. seismic appraisal seismic strengthening
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Reinforcement and numerical analysis on the corbel of a halfthrough arch bridge
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作者 廖碧海 《Journal of Chongqing University》 CAS 2009年第1期57-62,共6页
Corbels support the crossbeams of half-through arch bridges. They are prone to cracking easily due to their characteristics and complicated loading conditions. Based on a practical diagnosis of a bridge crossbeam, we ... Corbels support the crossbeams of half-through arch bridges. They are prone to cracking easily due to their characteristics and complicated loading conditions. Based on a practical diagnosis of a bridge crossbeam, we bonded steel plates onto bridge corbels to strengthen them. We carried out a numerical analysis on the effectiveness of the reinforcement by using the commercial sof^are ANSYS. The numerical analysis shows that the stresses near the section break increased slightly, but the variation amplitude was small and all the stresses were within an allowable range. The loading test indicates that it is feasible to strengthen the corbel with vertical bonded steel plates. Therefore, the reinforcement is effective and economical. This reinforcement method is suitable for this type of corbel and can be applied in similar cases. 展开更多
关键词 REINFORCEMENT corbel of crossbeam half-through arch bridge bonded steel plate finite element method
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Mechanical relationship in steel-aluminum solid to liquid bonding
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作者 张鹏 杜云慧 +3 位作者 刘汉武 曾大本 崔建忠 巴立民 《中国有色金属学会会刊:英文版》 CSCD 2003年第4期785-789,共5页
The bonding of solid steel plate to liquid aluminum was studied by using rapid solidification. The relationship between the bonding parameters such as preheat temperature of steel plate, temperature of aluminum liquid... The bonding of solid steel plate to liquid aluminum was studied by using rapid solidification. The relationship between the bonding parameters such as preheat temperature of steel plate, temperature of aluminum liquid and bonding time, and the interfacial shear strength of bonding plate was established by artificial neural networks perfectly. This relationship was optimized with a genetic algorithm. The optimum bonding parameters are: 226 ℃ for preheat temperature of steel plate, 723 ℃ for temperature of aluminum liquid and 15.8 s for bonding time, and the largest interfacial shear strength of bonding plate is 71.6 MPa. 展开更多
关键词 异种金属焊接 钢结构 铝合金 快速凝固 人工神经网络
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Experimental research and numerical simulation of RC beams strengthened with bonded steel plates 被引量:8
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作者 LEI Dong CHEN GuangYuan +1 位作者 CHEN YuQuan REN QingWen 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第12期3270-3277,共8页
It is a common method to strengthen the damaged RC structures with bonded steel plates. At present the ultimate bearing ca- pacity of RC structures strengthened with bonded steel plates is calculated mostly using the ... It is a common method to strengthen the damaged RC structures with bonded steel plates. At present the ultimate bearing ca- pacity of RC structures strengthened with bonded steel plates is calculated mostly using the theory based on the test. Four beams, including one reference beam, two strengthened concrete beams in primary force and secondary force respectively, and one strengthened concrete beam which was not anchored enough, were tested under four-point bending (4PB) in order to get the data of strain of longitudinal bars, bonded bottom steel plate in tension and deflection of beams in the middle span. The experimental program was supported by a three-dimensioned finite analysis using ABAQUS. At the end of experiments and finite analysis, it is concluded that the investing strengthening technique can significantly improve the load-carrying capacity and the phenomenon of stress concentration at the end of interface, as well as the damage at interface, can be well simulated with cohesive element provided by ABAQUS. 展开更多
关键词 RC beams strengthened with bonded steel plates secondary force finite element analysis damage of interface
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Effect of annealing on properties of Al/steel composite plates prepared by surface oxidation treatment before cold roll bonding 被引量:2
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作者 Lun Fu Yu-fei Zhu +2 位作者 Bin Yang Chao Yu Hong Xiao 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2023年第4期749-759,共11页
Al/steel composite plate has a wide application prospect,but great differences in properties between Al and steel are observed.It is difficult to obtain high bonding strength by the traditional cold roll bonding proce... Al/steel composite plate has a wide application prospect,but great differences in properties between Al and steel are observed.It is difficult to obtain high bonding strength by the traditional cold roll bonding process.Al/steel composite plate was thus prepared by cold roll bonding at a reduction rate of 60%after oxidation treatment on the surface to be composited on the steel side.The heat treatment of holding at 400℃ for 1 h and cooling with the furnace was then adopted.The bonding strength,microstructure,and properties of the Al/steel composite plate before and after annealing were analysed and compared through shear test,bending test,tensile test,and micro-characterization.Results show that the shear strengths of the interface before and after annealing are 100 and 80 MPa,respectively.Although the shear strength of the annealed Al/steel composite plate decreases,the bending and overall tensile properties of the composite plate are improved,showing better mechanical properties. 展开更多
关键词 Al/steel composite plate Oxidation treatment Annealing treatment Shear strength Cold roll bonding
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既有RC变截面柱加固前后的力学性能
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作者 李静薇 张浩宇 滕振超 《黑龙江科技大学学报》 CAS 2024年第4期564-571,共8页
针对变截面柱加层改造处存在的外力损伤、混凝土强度变低等问题,采用增大截面法、CFRP包裹法及粘钢加固法对构件进行加固并分析其受力性能。结果表明:增大截面法、CFRP加固法及粘钢加固法使原构件轴压承载力分别提升了113%、128%、112%... 针对变截面柱加层改造处存在的外力损伤、混凝土强度变低等问题,采用增大截面法、CFRP包裹法及粘钢加固法对构件进行加固并分析其受力性能。结果表明:增大截面法、CFRP加固法及粘钢加固法使原构件轴压承载力分别提升了113%、128%、112%,使侧压承载力分别提升了105%和192%及154%,但在周期荷载作用下粘钢加固法具有较大优势;增大截面法适用于提升变截面柱轴压承载力,CFRP加固适用于提升侧压承载力及轴压承载力,但两者均不适用于提升变截面柱抗震能力。而粘钢加固法相较于前两种方法均具有普适性。 展开更多
关键词 变截面柱 CFRP 增大截面 粘钢加固
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钢板削弱型叠层橡胶支座力学性能试验研究
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作者 马乾瑛 李冰冰 业嘉超 《浙江大学学报(工学版)》 EI CAS CSCD 北大核心 2024年第7期1436-1445,1478,共11页
结合厚层橡胶支座和普通叠层橡胶支座的优点设计新型钢板削弱型叠层橡胶支座,通过调节环形钢板的总数和位置进行支座水平和竖向刚度的有效控制.选择3种中心橡胶层厚度的钢板削弱型叠层橡胶支座,分析所设计支座的滞回特性、刚度特性和耗... 结合厚层橡胶支座和普通叠层橡胶支座的优点设计新型钢板削弱型叠层橡胶支座,通过调节环形钢板的总数和位置进行支座水平和竖向刚度的有效控制.选择3种中心橡胶层厚度的钢板削弱型叠层橡胶支座,分析所设计支座的滞回特性、刚度特性和耗能特性.基于串-并联模型,构建水平和竖向刚度的计算模型.试验结果表明,相比普通叠层橡胶支座,钢板削弱型叠层橡胶支座的水平和竖向刚度更低,水平和竖向耗能比更高,滞回曲线更光滑饱满.所建模型的计算结果与试验结果的一致性较好,误差绝对值不超过10%.所建模型在评估钢板削弱型叠层橡胶支座的水平和竖向刚度方面具有较高的精度和适用性. 展开更多
关键词 橡胶支座 钢板削弱 串-并联模型 三维隔震 滞回特性
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C型外包花纹钢-混凝土界面粘结强度推出试验研究
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作者 陈丽华 周璐洁 +1 位作者 徐海波 董丽娟 《建筑结构》 北大核心 2024年第1期17-24,共8页
为探究带拉条式C型外包花纹钢-混凝土的粘结强度及粘结滑移性能,考虑钢板的花纹高度、混凝土强度、拉条间距、截面宽度和翼缘截面形式对试件粘结强度的影响,设计制作了12个带拉条的C型外包花纹钢-混凝土推出试件。分析各试件的破坏过程... 为探究带拉条式C型外包花纹钢-混凝土的粘结强度及粘结滑移性能,考虑钢板的花纹高度、混凝土强度、拉条间距、截面宽度和翼缘截面形式对试件粘结强度的影响,设计制作了12个带拉条的C型外包花纹钢-混凝土推出试件。分析各试件的破坏过程、荷载-滑移曲线、钢板应变沿纵向分布规律及特征粘结强度;综合考虑各影响因素,统计回归得出特征粘结强度的计算公式。研究结果表明:增大花纹高度是改善粘结性能最有效的途径;特征粘结强度随着混凝土强度的增大呈增大趋势,随着截面宽高比和拉条间距的增大呈减小趋势;在同等条件下,翼缘内翻试件的粘结性能优于翼缘外翻试件;特征粘结强度的回归公式能够较好地拟合试验结果。 展开更多
关键词 C型外包钢 花纹钢板 特征粘结强度 推出试验 荷载-滑移曲线
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水工混凝土结构修补加固关键技术探析
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作者 程磊 刘传雨 《东北水利水电》 2024年第8期17-21,71,共6页
我国多数水库大坝建设年代早,水工混凝土结构存在各种老化安全问题,亟待采取修补加固处理。针对水工混凝土结构缺陷类型较多,缺陷修补加固技术复杂,本文根据水工混凝土结构的运行环境和常见缺陷类型,对其修补加固方案、加固材料及施工... 我国多数水库大坝建设年代早,水工混凝土结构存在各种老化安全问题,亟待采取修补加固处理。针对水工混凝土结构缺陷类型较多,缺陷修补加固技术复杂,本文根据水工混凝土结构的运行环境和常见缺陷类型,对其修补加固方案、加固材料及施工工艺等进行了技术总结,结合漳河水库水工混凝土结构缺陷问题,详细阐述混凝土裂缝、混凝土表面剥蚀、局部结构强度不足等缺陷产生原因和最新加固技术,相关研究成果和实践经验可供类似工程借鉴。 展开更多
关键词 水工结构 混凝土缺陷 修补加固 粘贴钢板 预应力加固
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不同加载速率下钢筋与橡胶混凝土的粘结性能
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作者 李恒 平克磊 +2 位作者 陈为民 罗云枫 曹玉贵 《长江科学院院报》 CSCD 北大核心 2024年第9期161-168,共8页
钢筋与橡胶混凝土之间良好的粘结性能,是橡胶混凝土工程应用的基础。为研究不同加载速率下钢筋与橡胶混凝土的粘结性能,对钢筋橡胶混凝土试件进行不同加载速率(0.01~1 mm/s)下的中心拉拔试验,分析加载速率、橡胶替换率及钢筋直径对钢筋... 钢筋与橡胶混凝土之间良好的粘结性能,是橡胶混凝土工程应用的基础。为研究不同加载速率下钢筋与橡胶混凝土的粘结性能,对钢筋橡胶混凝土试件进行不同加载速率(0.01~1 mm/s)下的中心拉拔试验,分析加载速率、橡胶替换率及钢筋直径对钢筋与橡胶混凝土粘结性能与破坏状态的影响。试验结果表明,钢筋直径对拉拔试件的破坏方式影响显著,钢筋直径18 mm的试件发生劈裂破坏,钢筋直径14 mm的试件发生钢筋拔出破坏。此外,加载速率对粘结滑移曲线中的关键参数值也有显著影响。通过理论分析提出了不同加载速率下钢筋与橡胶混凝土粘结滑移关系计算模型,模型评估结果表明新建立模型的计算结果与试验结果吻合良好,可以用于预测不同加载速率下钢筋与橡胶混凝土之间的粘结滑移关系。 展开更多
关键词 橡胶混凝土 钢筋 拉拔试验 加载速率 粘结性能
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