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Application of Ag-Cu-Ti active metal composite filler in ceramic joining:a review

Frontiers of materials Science 2023年第4期17卷 1-35页

作者： Yuhang Li Jun WANG Ziyan SHEN Hangli Qian Wanliang Zhang Kaiyu Zhang Danqing Ying Qihang Zhou Chengshuang Zhou Lin Zhang Institute of Material Forming and Control Engineering Zhejiang University of TechnologyHangzhou 310014China Zhejiang Baima Lake Laboratory Co. Ltd.Hangzhou 310000China

As a structural and functional material with excellent properties,ceramics play an extremely important role in a wide range of industries,including life and *** expand the range of applications for ceramic materials,ceramics are often joined to metals and then *** the physical and chemical joining methods of ceramics to metals,the AMB method is efficient and simple,suitable for industrial applications,and has been a hot topic of ***,due to the problems of residual stresses caused by the large difference in thermal expansion coefficients between ceramic and metal brazing,composite fillers have become a very worthwhile solution by regulating the physical properties of the brazing material and improving the weld *** review describes the wetting principle and application of Ag‒Cu‒Ti active metal filler in the field of ceramic joining,with emphasis on the current stage of composite filler,and discusses the influence on the former brazing properties and organization after the introduction of dissimilar materials.

关键词： brazing composite filler residual stress active metal ceramic‒metal joints

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Synergistic Regulation of Nano-Precipitates and Reversed Austenite in Titanium-Free Maraging Steel by Low-Temperature Solution Treatment and Double Aging Treatment

SSRN

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SSRN 2024年

作者： Liu, Xin Liu, Zheye Zhang, Ye Xiao, Yu Feng, Zhiyuan Zhang, Kaiyu Zhang, Wanliang Zhou, Chengshuang Zhang, Lin Institute of Material Forming and Control Engineering Zhejiang University of Technology Hangzhou310014 China

To synergistically enhance the strength and toughness of titanium-free maraging steel, a multi-scale characterization method was used to illustrate the effects of low-temperature solution treatment and double aging treatment on the microstructure of titanium-free maraging steel in this paper. After the low-temperature solution treatment and the double aging treatment, the tensile strength of titanium-free maraging steel increased from 1954 MPa to 2160 MPa and the elongation increased by 8.95%. By the low-temperature solution treatment, the original austenite grain size of the titanium-free maraging steel was refined to 0.69μm. The double aging treatment promoted the diffusion of Mo and Ni elements, increased the volume fraction of ω phase, Ni3Mo nano-precipitation phase and reversed austenite, and refined the size of ω phase and Ni3Mo by 14.2% and 7.9%, respectively. The nanoparticles of titanium-free maraging steel mainly include the ω phase, Ni3Mo and Mo-rich phase. The strengthening mechanism of nanoparticles was quantitatively evaluated from the shear mechanism and Orowan dislocation loop mechanism. The mechanism shows that the ω phase is the main contributor to the overall precipitation strengthening. Therefore, low-temperature solution treatment and double aging treatment provide a potential solution for achieving high strength and high toughness in maraging steel. © 2024, The Authors. All rights reserved.

关键词： Microstructure

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Monitoring the Evolution of Dimensional Accuracy and Product Properties in Property-controlled forming Processes

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SSRN 2023年

作者： Stebner, Sophie Charlotte Martschin, Juri Arian, Bahman Dietrich, Stefan Feistle, Martin Hütter, Sebastian Lafarge, Rémi Laue, Robert Li, Xinyiang Schulte, Christopher Spies, Daniel Thein, Ferdinand Wendler, Frank Wrobel, Malte Vasquez, Julian Rozo Dölz, Michael Münstermann, Sebastian Integrity of Materials and Structures RWTH Aachen University Aachen Germany Institute of Forming Technology and Lightweight Components Dortmund University Dortmund Germany Forming and Machining Technology Paderborn University Paderborn Germany Institute for Applied Materials - Material Science Karlsruhe Institute of Technology Karlsruhe Germany Fraunhofer Institute for Casting Composite and Processing Technology Garching Germany Institute of Materials and Joining Technology Otto-von-Guericke University Magdeburg Germany Forming and Machining Processes Technische Universität Dresden Dresden Germany Institute for Machine Tools and Productions Processes Virtual Production Engineering Chemnitz University of Technology Chemnitz Germany Institute of Metal Forming RWTH Aachen University Aachen Germany Institute of Automatic Control RWTH Aachen University Aachen Germany Institute for Production Engineering and Forming Machines Technical University of Darmstadt Darmstadt Germany Institut für Geometrie und Praktische Mathematik RWTH Aachen University Aachen Germany Measurement and Sensor Technology Chemnitz University of Technology Chemnitz Germany Digital Process Engineering Group Institute for Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology Karlsruhe Germany Materials Test Engineering Dortmund University Dortmund Germany

As recent trends in manufacturing engineering disciplines show a clear development in the sustainable as well as economically efficient design of forming processes, monitoring techniques have been gaining in relevance. In terms of monitoring of product properties, most processes are currently open-loop controlled, entailing that the microstructure evolution, which determines the final product properties, is not considered. However, a closed-loop control that can adjust and manipulate the process actuators according to the required product properties of the component will lead to a considerable increase in efficiency of the processes regarding resources and will decrease postproduction of the component. For most forming processes, one set of component dimensions will result in a certain set of product properties. However, to successfully establish closed-loop property controls for the processes, a systematic understanding of the reciprocity of the dimensions after forming and final product properties must be established. This work investigates the evolution of dimensional accuracy as well as product properties for a series of forming processes that utilize different degrees of freedom for process control. © 2023, The Authors. All rights reserved.

关键词： Process control

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Corrigendum to “Strain-induced twins and martensite: Effects on hydrogen embrittlement of selective laser melted (SLM) 316L stainless steel” [Corros. Sci. 208 (2022) 110669]

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Corrosion Science 2023年 215卷

作者： Yuanjian Hong Chengshuang Zhou Stefan Wagner Sabine Schlabach Astrid Pundt Lin Zhang Jinyang Zheng Institute of Material Forming and Control Engineering Zhejiang University of Technology Hangzhou 310014 China Karlsruhe Institute of Technology (KIT) Institute for Applied Materials Materials Science and Engineering (IAM-WK) Kaiserstraße 12 Karlsruhe 76131 Germany Karlsruhe Institute of Technology (KIT) Karlsruhe Nano Micro Facility (KNMFi) Kaiserstraße 12 Karlsruhe 76131 Germany Institute of Process Equipment Zhejiang University Hangzhou 310027 China

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BaTiO3 assisted PAN fiber preparation of high performance flexible nanogenerator

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Nanotechnology 2020年第24期31卷 24LT01页

作者： Tingting Cai Yun Yang Ting Bi Ernest Bi Yanfang Li Department of Chemistry and Chemical Engineering Luliang University Lvliang 033000 People's Republic of China. Department of Mining Engineering Key Laboratory of Maintenance and Inspection of Coal Mine Mechanical Equipment Luliang University Lvliang 033000 People's Republic of China. Material Forming and Control Engineering Taiyuan University of Science and Technology Jincheng 048011 People's Republic of China. School of Chemical Engineering Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 People's Republic of China.

Recently, polyacrylonitrile (PAN) fiber films have shown greater advantages over polyvinylidene fluoride (PVDF) in the field of energy harvesting. Adding other substances with high piezoelectric coefficient is worth exploring to further improve the output voltage of PAN. Here, we successfully dispersed high dielectric constant barium titanate in PAN nanofiber films with different dosages using an electrospinning technology. The X-ray diffraction and Fourier transform infrared spectroscopy results indicated that BaTiO nanoparticles aid in transforming PAN from a 3-helical conformation to a planar zigzag conformation, thus improving the output voltage of PAN nanofibers significantly and also promoting its mechanical properties. In addition, the human body function monitoring experiment showed a good response current to the rhythm of elbow bending, knee bending, running, and breathing. Besides, when a simple rectifier circuit was applied, the capacitor could be charged to 2 V in less than 2 min and light a commercial LED through repeated tapping.

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Effect of CO2 on the permeation of hydrogen in carbon steel in H2S environment

Effect of CO2 on the permeation of hydrogen in carbon steel ...

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Chinese materials Conference on materials and Technologies for Energy Supply and Environmental engineering, 2015

作者： Bai, Pengpeng Liang, Yuxuan Liu, Liwei Zhou, Chengshuang Zheng, Shuqi Chen, Changfeng State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering China University of Petroleum Beijing102249 China Shougang Research Institute of Technology Beijing100041 China Institute of Material Forming and Control Engineering Zhejiang University of Technology Hangzhou310014 China

ISBN: (纸本)9783038356561

The effect of CO2 on the hydrogen permeation behaviour of carbon steel was investigated in a high temperature and high pressure hydrogen permeation device, through hydrogen permeation test, weight loss test, hydrogen content test, and SEM-EDS. The results showed that the peak value of the hydrogen permeation curves were almost the same with or without CO2, but the hydrogen permeation curve rose sharply, and then decreased gradually to a stabilized current value in H2S/CO2 environment, which was lower than in H2S environment. The corrosion rates and the amount of hydrogen of steel in H2S/CO2 environment were lower than in H2S environment. Therefore, it is considered that CO2 has an effect on the hydrogen permeation in H2S, mainly due to the change of corrosion products. © 2016 Trans Tech Publications, Switzerland.

关键词： Carbon dioxide

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Dependence of the abnormal protective property on the corrosion product film formed on H2S-adjacent API-X52 pipeline steel

Dependence of the abnormal protective property on the corros...

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作者： Zheng, Shuqi Zhou, Chengshuang Chen, Xingyang Zhang, Lin Zheng, Jinyang Zhao, Yongzhi State Key Laboratory of Heavy Oil Processing Department of Materials Science and Engineering China University of Petroleum Beijing 102249 China Institute of Material Forming and Control Engineering College of Materials Science and Engineering Zhejiang University of Technology Hangzhou 310014 China Institute of Process Equipment Zhejiang University Hangzhou 310027 China

The dependence of the protective property on the corrosion product film formed on API-X52 pipeline steel was investigated using the electro-chemical hydrogen permeation method in acidic solution under various H2S partial pressures. The hydrogen permeation current is dependent on the H 2S concentration and the corrosion product film. The hydrogen permeation current increases with the H2S partial pressure, and decreases with thickening the corrosion product film. The dense corrosion product films formed in 1.0 MPa H2S shows the obvious protective property against hydrogen permeation, while the delamination of the corrosion product film formed in 0.1 MPa H2S weakens the protective property. The hydrogen permeation current in 1.0 MPa H2S is lower than that in 0.1 MPa H2S after 200 h immersion in acidic solution and this is of great significance to the service life prediction and the prevention of hydrogen embrittlement in H2S-adjacent pipelines. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

关键词： Steel pipe

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Hydrogen Effects on Nanoindentation Creep of Austenitic Stainless Steels

Hydrogen Effects on Nanoindentation Creep of Austenitic Stai...

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第十五届全国氢能会议暨第7届两岸三地氢能研讨会

作者： Lin ZHANG Chengshuang ZHOU Jinyang ZHENG Yongzhi ZHAO Chaohua GU Chilou ZHOU Zhengli HUA Xingyang CHEN Institute of Process Equipment Zhejiang UniversityHangzhou 310027China Institute of Material Forming and Control Engineering Zhejiang University of TechnologyHangzhou 310014

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