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Data-model coupling driven stress field measurements

Theoretical & Applied Mechanics Letters 2024年第4期14卷 280-290页

作者： Guangbo Wang Jian Zhao Jiahui Liu Dong Zhao School of Technology Beijing Forestry UniversityBeijing 100083China Key Lab of State Forestry Administration on Forestry Equipment and Automation Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Efficient Production of Forest Resources Beijing 100083China

This paper presents a method for measuring stress fields within the framework of coupled data models,aimed at determining stress fields in isotropic material structures exhibiting localized deterioration behavior without relying on constitutive equations in the deteriorated *** approach contributes to advancing the field of intrinsic equation-free *** methodology combines measured strain fields with data-model coupling driven *** gradient and Canny operators are utilized to process the strain field data,enabling the determination of the deterioration region's ***,an adaptive model building method is proposed for constructing coupling driven *** address the issue of unknown datasets during computation,a dataset updating strategy based on a differential evolutionary algorithm is *** resulting optimal dataset is then used to generate stress field *** against finite element method calculations demonstrates the accuracy of the proposed method in obtaining full-field stresses in specimens with local degradation behavior.

关键词： Stress field measurements Data-model coupling driven Differential evolutionary algorithm Material dataset

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Enhancement of the electrochemical performance in MgO stabilized ZrO2 oxygen sensors by co-doping trivalent metal oxides

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CURRENT APPLIED PHYSICS 2022年 39卷 133-139页

作者： Wen, Tianpeng Yuan, Lei Yan, Zhengguo Jin, Yao Liu, Zhaoyang Yu, Jingkun Northeastern Univ Sch Met Shenyang 110819 Peoples R China Northeastern Univ State Key Lab Rolling & Automation Shenyang 110819 Peoples R China

The present work looked at the co-doping effect of the typical trivalent metal oxides on the electrochemical performance of 8 mol% of MgO stabilized ZrO2 (Mg-PSZ) electrolyte ceramics used for oxygen sensors. An appreciable increase in the ionic conductivity occurred on substituting MgO with trivalent metal oxides except La2O3 in the Mg-PSZ electrolyte ceramics across the measured temperature range. The conductivity was related to the co-dopant ionic radius and the ionic conductivity increased with the co-dopant ionic radius of the trivalent metal oxides, reached a maximum at about 1.02 angstrom, and thereafter decreased. Through comparison and analysis, the Y2O3 exhibited excellent superiority than other trivalent metal oxides and the oxygen sensor assembled by 1Y7Mg-PSZ electrolyte possessed more excellent response speed and stability.

关键词： Trivalent metal oxides Ionic radius Ionic conductivity Oxygen sensor

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Study on the role of cryogenic treatment on corrosion and wear behaviors of high manganese austenitic steel

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JOURNAL OF MATERIALS RESEARCH AND technology-JMR&T 2023年 24卷 5271-5285页

作者： Wang, Yi-Ming Liang, Yong Zhai, Yang-Dong Zhang, Yong-Shi Sun, Hao Liu, Zhen-Guang Su, Guan-Qiao Jiangsu Univ Sci & Technol Sch Mat Sci & Engn Zhenjiang 212100 Peoples R China Pangang Grp Res Inst Co Ltd State Key Lab Vanadium & Titanium Resources Compre Panzhihua 617000 Peoples R China Northeastern Univ State Key Lab Rolling & Automation Shenyang 110819 Peoples R China

In this study, electrochemical corrosion and wear experiments were conducted to clarify the role of cryogenic treatment on the microstructural morphology and resistance to corrosion and wear of high-manganese austenitic steel. Heat treatment of the solution (950 & DEG;C) and annealing (500 & DEG;C and 600 & DEG;C) were performed on the hot-rolled specimens. Cryogenic treatment was applied to hot-rolled, hot-rolled + heat treated specimens. Cryogenic treatment is a practical technology for eliminating the strip morphology of hot -rolled specimens and improves the wear resistance of heat-treated specimens. However, it plays different role on the corrosion resistance of tested specimens related with production process. The wear mechanism differs due to the cryogenic treatment. A schematic model of the wear mechanism is proposed based on the experimental results. Cryogenic treat-ment coarsens the grain size regardless of the production process.& COPY;2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： High manganese austenitic steel Corrosion Wear Cryogenic treatment

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Ratio of viscosity to water content in solutions: A new indicator for designing of electrolytic polishing solutions for stainless steel

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JOURNAL OF MATERIALS RESEARCH AND technology-JMR&T 2024年 30卷 7896-7909页

作者： Ma, Chaoran Yang, Zhice Du, Zhuoyang Zhou, Peng Zhao, Yang Hua, Yong Su, Cheng Zhang, Tao Wang, Fuhui Northeastern Univ Shenyang Natl Lab Mat Sci 3-11 Wenhua Rd Shenyang 110819 Peoples R China Northeastern Univ State Key Lab Rolling & Automation Shenyang 110819 Peoples R China Zhejiang JIULI Hitech Met Co Ltd Corros & IOgr Ctr Huzhou Peoples R China

Leveraging a fresh comprehension of electrolytic polishing (EP) mechanisms, this study introduces a pivotal factor - viscosity/water content ratio (VWR) - for the first time, rooted in acidity ratio theory. The present study aligns with published works to affirm the validity of the VWR indicator and its correlation with surface roughness. A noteworthy contribution lies in the design of EP solutions that can serve as a guide for stainless steels. It strikes a balance between low cost, high efficiency, long service life and desirable surface roughness. This involves regulating the dissolution-ionization-deposition process at the metal/solution interface.

关键词： Stainless steel Surface roughness Interfaces Anodic dissolution Electrolytic polishing

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Fe1-xS/Fe g-C3N4 heterostructure encapsulated into S/N-doped carbon nanofibers as an efficient anode material for sodium ion batteries

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JOURNAL OF ALLOYS AND COMPOUNDS 2025年 1027卷

作者： Wu, Jianghai Wang, Yuchen Liu, Xin Hua, Yang Li, Pengwei Wang, Qing Zhang, Yahui Yan, Shengxue Guo, Jing Luo, Shao-hua Northeastern Univ Sch Mat Sci & Engn Shenyang 110819 Peoples R China Northeastern Univ State Key Lab Rolling & Automation Shenyang 110819 Peoples R China Northeastern Univ Qinhuangdao Sch Resources & Mat Qinhuangdao 066004 Peoples R China Key Lab Dielect & Electrolyte Funct Mat Hebei Prov Qinhuangdao 066004 Peoples R China

Iron sulfides have shown great promise as anode materials for sodium-ion batteries (SIBs) due to their high storage capacity and low cost. However, their practical implementation is hindered by significant volume expansion and poor electronic conductivity. In this investigation, ultrafine Fe1-xS nanoparticles with dual protection from iron-modified graphitic carbon nitride (g-C3N4) and sulfur/nitrogen-doped one-dimensional carbon fiber were successfully fabricated through a designed strategy. The introduction of carbon fiber significantly accelerates the transport of electrons and ions as well as the reaction dynamics. Additionally, the in-situ hybridization of iron-modified g-C3N4 encapsulated in carbon fibers during pyrolysis leads to a heterogeneous structure between g-C3N4 and Fe1-xS species. This not only restricts the growth of Fe1-xS particles, but also greatly accelerate electron and ion transport as well as reaction kinetics. The resultant g-C3N4/Fe1-xS@NSCFs-0.15 composite demonstrated a stable discharge capacity of 577 mAh g(-1) after 100 cycles at 0.1 A g(-1), with a retained capacity of 451 mAh g(-1) after 100 cycles at 1 A g(-1). Our results indicate that the dual-protection structural characteristics of the iron-modified graphitic carbon nitride and S/N-doped one-dimensional carbon fiber can enhance the electrode performance of Fe1-xS, Meanwhile, the amount of urea added is crucial for regulating the fine structure.

关键词： Sodium-ion batteries Electrostatic spinning Heterostructure Anode

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Reaction behavior and non-isothermal kinetics of suspension magnetization roasting of limonite and siderite

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International Journal of Minerals,Metallurgy and Materials 2023年第5期30卷 824-833页

作者： Qiang Zhang Yongsheng Sun Yuexin Han Yanjun Li Peng Gao School of Resources and Civil Engineering Northeastern UniversityShenyang 110819China National-local Joint Engineering Research Center of High-efficient exploitation technology for Refractory Iron Ore Resources Shenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

In order to develop limonite and decrease CO_(2) emissions,siderite is proposed as a clean reductant for suspension magnetization roasting(SMR) of *** iron concentrate(iron grade:65.92wt%,iron recovery:98.54wt%) was obtained by magnetic separation under the optimum SMR conditions:siderite dosage 40wt%,roasting temperature 700℃,roasting time 10 *** to the magnetic analysis,SMR achieved the conversion of weak magnetic minerals to strong magnetic minerals,thus enabling the recovery of iron via magnetic *** on the phase transformation analysis,during the SMR process,limonite was first dehydrated and converted to hematite,and then siderite decomposed to generate magnetite and CO,where CO reduced the freshly formed hematite to *** microstructure evolution analysis indicated that the magnetite particles were loose and porous with a destroyed structure,making them easier to be *** non-isothermal kinetic results show that the main reaction between limonite and siderite conformed to the two-dimension diffusion mechanism,suggesting that the diffusion of CO controlled the *** results encourage the application of siderite as a reductant in SMR.

关键词： reaction behavior non-isothermal kinetics suspension magnetization roasting siderite limonite CO_(2)emissions

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Influence of multilayer sea sand and Shewanella algae on the corrosion behavior of 316 SS

NPJ MATERIALS DEGRADATION

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NPJ MATERIALS DEGRADATION 2025年第1期9卷 1-11页

作者： Shen, Yufeng Ma, Rongyao Wang, Changgang Dong, Junhua Xu, Dake Univ Sci & Technol China Sch Mat Sci & Engn Shenyang Peoples R China Chinese Acad Sci Inst Met Res Shenyang Natl Lab Mat Sci Shenyang Peoples R China Northeastern Univ Shenyang Natl Lab Mat Sci Shenyang Peoples R China Northeastern Univ State Key Lab Rolling & Automation Shenyang Peoples R China

The effects of multilayer sea sand particles of varying sizes and Shewanella algae (S. algae) on the corrosion behavior of 316 stainless steel (SS) were investigated. The findings reveal that in a sterile environment, sand hinders the diffusion of dissolved oxygen, thereby impeding the growth of the passive film and enhancing the corrosion of 316 SS. The promotion effect intensifies as the particle size of the sand decreases. In a non-sterile environment, in the absence of sand, S. algae accelerates the corrosion by consuming dissolved oxygen, and expediting the breakdown of passive film. The corrosion acceleration caused by S. algae is markedly greater than that induced by sand. When sand is present, it markedly reduces the effective attachment of S. algae, thereby mitigating the corrosion-accelerating effect of S. algae. Additionally, a reduction in sand particle size leads to a decrease in S. algae attachment and an enhancement in corrosion inhibition.

关键词： Multilayers

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Achieving heterogeneous TWIP/TRIP steel with 1GPa strength and 72% ductility by introducing austenite plus martensite lamella structure

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MATERIALS CHARACTERIZATION 2023年第1期197卷

作者： Zhang, Jiayun Xu, Yunbo Wang, Yuan Wang, Siyu Northeastern Univ State Key Lab Rolling & Automation Shenyang 110819 Peoples R China

A heterogeneous medium-Mn steel with ultra-high ductility and good strength was designed, which displayed yield strength of 752 MPa, ultimate tensile strength of 1068 MPa, total elongation of 72.4%, and strengthelongation product of 77.3 GPa center dot%. A unique pre-existing austenite + martensite lamella structure was introduced by warm rolling followed by cold rolling. During annealing, it transformed into a heterogeneous duplexphase (ferrite and austenite) microstructure with multiple morphologies (lath-like, granular, and block) and a dispersed grain size distribution. The relationships between the microstructural evolution and Mn segregation, deformation mechanisms, and mechanical behavior were characterized. The heterogeneous austenite structure yielded different austenite-stability gradients, which triggered multi-stage transformation-induced plasticity (TRIP) effects during the tensile test, accompanied by the twinning-induced plasticity (TWIP) and microbandinduced plasticity (MBIP) effects. Therefore, the synergy of multiple strengthening mechanisms significantly improved the steel ductility without affecting its strength, resulting in better mechanical properties than other medium-Mn steels.

关键词： Medium Mn steel Heterogeneous structure TRIP/TWIP Austenite stability Microband

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Oxidation induced ductility enhancement of Zr based metallic glass ribbons in vicinity of glass transition temperature

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China Foundry 2022年第1期19卷 75-80页

作者： Jin-tao Wang Xue-feng Gao Rui-chun Wang Yin-xiao Wang Fu-yu Dong Wen-ying Xue Hong-wang Yang School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China School of Intelligent Manufacturing Weifang University of Science&TechnologyShouguang 262700ShandongChina State Key Lab of Rolling&Automation Northeastern UniversityShenyang 110819China

Zr-based metallic glasses(MGs)possess a wide supercooled liquid region,which gives a wide processing window for superplastic forming to make microdevices with demanding size accuracy and surface *** existence of oxygen may have an influence on the thermoplastic deformation ***,the effect of oxidation on the mechanical behavior of the MGs in the vicinity of glass transition temperature is of great significance for practical forming of MG *** the present study,the effect of oxidation on tensile properties of Zr50Cu40Al10 metallic glass was *** tested samples were characterized by XRD and SEM *** the samples tested in air,the strength decreases 187 MPa,61 MPa and 59 MPa and the ductility increases 0.31,0.36,and 0.77 at 420℃,430℃,and 440℃,respectively,compared with those tested in flowing ***_(2) preferentially formed during the tensile testing at 420℃,and both ZrO_(2) and Al_(2)O_(3) oxides formed at 430℃.The dilution of Zr elements in the remaining amorphous matrix caused by preferential oxidation on the surface layer attributes to the decrease in strength and enhancement in ductility of the Zr_(50)Cu_(40)Al_(10) metallic glasses.

关键词： metallic glass mechanical properties tensile test preferential oxidation high temperature

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Macroscopic and nanoscale investigation of the enhanced wear properties of medium-Mn steel processed via room-temperature quenching and partitioning

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WEAR 2023年 522卷

作者： Yan, Xincheng Hu, Jun Zhang, Xiao Xu, Wei Northeastern Univ State Key Lab Rolling & Automation Shenyang 110819 Peoples R China

High-manganese austenitic and high hardness martensitic steels are widely used in wear-related applications. However, their abrasive wear performance is unsatisfactory because of the insufficient twinning induced plas-ticity effect of the former and the weak strain hardening and low crack resistance during wear of the latter. Here, novel wear-resistant steels were developed via alloy design and simple room-temperature quenching and par-titioning (RT-Q&P) of medium Mn steels (0.3C-10Mn and 0.3C-10Mn-0.25V). Their microstructure and sliding abrasive wear behavior were compared to those of conventional Hardox400 and Hadfield steels. The two medium-Mn steels had better wear properties than conventional wear-resistant steels. Moreover, the V -con-taining steel with a multiphase microstructure of tempered martensite, retained austenite, and nano-vanadium carbide precipitates, possessed 2.98 and 3.45 times higher abrasive wear resistance than the Hardox400 and Hadfield steels, respectively. Besides the stimulated transformation-induced-plasticity effect in RT-Q&P steels, the enhanced abrasive wear resistance of V-containing steel was attributed to microstructural refinement and improved strain hardening during wear imparted by V element. The main wear mechanism of RT-Q&P wear -resistant steels was cutting, while it was grooves and pits for Hadfield steel, and peeling pits and delamina-tion for Hardox400 steel. This study can guide the design of structural materials with excellent wear resistance through multiphase microstructural and nano-precipitate regulation to overcome the wear challenges of components.

关键词： Wear -resistant medium-Mn steel RT-Q & P process TRIP effect Nano -precipitates

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