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Influence of delta phase precipitation on static recrystallization of cold-rolled Inconel 718 alloy in solid solution treatment

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Journal of Iron and Steel Research International 2019年第2期26卷 148-153页

作者： neng-yong ye Ming Cheng Shl-hong Zhang Hong-wu Song Hong-wei Zhou Institute of Metal Research Chinese Academy of SciencesShenyang 110016LiaoningChina School of Mechanical Engineering Taizhou UniversityTaizhou 318013ZhejiangChina State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050GansuChina

Due to the improvement in fatigue strength of cold-rolled blades,the static recrystallization behavior of cold-rolled Inconel 718 alloy in the solid solution treatment was investigated with the methods of optical microscopy and electron backscattered *** effect ofδphase precipitation on the static recrystallization process was also *** results show thatδphase preferentially precipitates comparing to static *** by theδphase preferential precipitation process,sub-grain migration is the main nucleation mechanism in the static recrystallization of coldrolled Inconel 718 alloy at 980°***,strain-induced boundary migration also exists as an aided nucleation mechanism when the rolling reduction is less than 30%.

关键词： Cold rolling Inconel 718 alloy Static recrystallization δphase precipitation

Orientational growth behavior and mechanism of delta(δ)phase precipitation in cold-rolled Inconel 718 alloy during heat treatment

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Journal of Iron and Steel Research International 2024年第1期31卷 264-274页

作者： neng-yong ye Guang-liang Zhang Tian-yue Huang Ming Cheng Shi-hong Zhang Lei Wang School of Materials Science&Engineering Taizhou UniversityTaizhou318000ZhejiangChina Institute of Metal Research Chinese Academy of SciencesShenyang110016LiaoningChina

Due to the important role ofδphase's quantity and morphology in the mechanical and fatigue properties of Inconel 718 alloy and its components,it is necessary to renew insights into the effect of cold deformation on theδphase precipitation,especially on the morphology ***,the nucleation and growth behavior ofδphase in cold-rolled Inconel 718 alloy during aging were *** results show that the precipitation rate and volume fraction ofδphase increase with increasing the cold rolling reduction from 10%to 50%.The volume fraction ofδphase reaches equilibrium after 5 h,remaining at 5.98%,6.52%,and 6.79%under different rolling reductions(10%,30%,and 50%),*** nucleation ofδphase mainly occurs on different sites(grain boundaries,new twin boundaries and old twin boundaries)under 10%rolling reduction,whileδphase mainly nucleates on the new grain boundaries of static recrystallization due to 50%rolling *** the growth ofδphase undergoes a process of alternate orientation growth from spherical(nucleation)→short rod(longitudinal orientation growth)→short rod(radial orientation growth)→dynamic *** 10%rolling reduction,δphase tends to grow into the matrix,while under 50%rolling reduction,the orientation grows faster and is easily affected by the grain boundary curvature.

关键词： Inconel 718 alloy Cold rolling δphase Orientation growth Morphology evolution

Twinning and detwinning during compression–tension loading measured by quasi in situ electron backscatter diffraction tracing in Mg–3Al–Zn rolled sheet

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Rare Metals 2015年第10期34卷 698-705页

作者： Li Zheng Shi-Hong Zhang Dirk Helm Hong-Wu Song Guang-Sheng Song neng-yong ye Institute of Metal Research Chinese Academy of Sciences Material Shaping Researching Group Fraunhofer Institute for Mechanics of Materials School of Material Science and Engineering Shenyang Aerospace University

Twinning and detwinning are the important deformation modes in magnesium alloys during cyclic loading at room temperature. To analyze these two deformation mechanism, cyclic compression–tension experiments were performed on Mg–3Al–1Zn rolled sheet along the rolling direction. In these tests, the microstructure evolutions of a series of grains during deformation were traced by using quasi in situ electron backscatter diffraction(EBSD). Important quantities like the Schmid factors of twinning system, the fraction of twinning during compression, and the fraction of twinning after reverse loading were calculated on the basis of measured quantities. The influence of Schmid factor of twinning variants on detwinning upon reverse loading was analyzed. Detwinning would prefer to proceed during reverse loading if the Schmid factor of twinning in the twinning area before reverse loading is sufficiently large.

关键词： Magnesium alloy Sheet metal Twinning Detwinning Te

Effect of δ Phase on Mechanical Properties of GH4169 Alloy at Room Temperature

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Journal of Iron and Steel Research International 2015年第8期22卷 752-756页

作者： neng-yong ye Ming CHENG Shi-hong ZHANG Hong-wu SONG Hong-wei ZHOU Ping-bo WANG State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Institute of Metal Research Chinese Academy of Sciences

Tensile tests of GH4169 alloy were performed at room temperature. Different fractions, distributions and shapes of δ phase was prepared by aging treated at 880 ℃, 930 ℃ and 980 ℃ for 5 h or 10 h. The effect of δ phase on the mechanical pro- perties of GH4169 alloy was investigated. The results show that 0.2% yield strength and ultimate tensile strength of GH4169 alloy increase by 61 MPa and 78 MPa respectively when the fraction of δ phase increases from 2.20% to 5.21%. Then, the ultimate tensile strength remains at 1 012 MPa even when the fraction of δ phase reaches 7.56%. The fraction effect of δ phase on the strength improvement of GH4169 alloy is more significant than morphology, and the critical fraction value is 5.21%. In addition, the elongation decreases by 14.1% when the fraction of δ phase increases from 2.20% to 7.56%. Excessive needle or short rod shaped 8 ohase is resoonsible for the reduction of eloneation.

关键词： GH4169 alloy δ phase fraction mechanical property morphology

Engineered iron-based metal-organic frameworks nanoplatforms for cancer theranostics: A mini review

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Chinese Chemical Letters 2025年第2期36卷 80-93页

作者： Yunlong Li Xinyu Zhang Shuang Liu Chunsheng Li Qiang Wang Jin ye yong Lu Jiating Xu Key Laboratory of Forest Plant Ecology Ministry of Education College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University School of Laboratory Medicine Wannan Medical College Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances Northeast Forestry University

Up to now, numerous emerging methods of cancer treatment including chemodynamic therapy, photothermal therapy, photodynamic therapy, sonodynamic therapy, immunotherapy and chemotherapy have rapidly entered a new stage of development. However, the single treatment mode is often constrained by the complex tumor microenvironment. Recently, the nanomaterials and nanomedicine have emerged as promising avenues to overcome the limitation in cancer theranostics. Especially, metal-organic frameworks (MOFs) have gained considerable interests in cancer therapy because of their customizable morphologies, easy functionalization, large specific surface area, and good biocompatibility. Among these MOFs, iron-based MOFs (Fe-MOFs) are particularly promising for cancer treatment due to their properties as nano-photosensitizers, peroxidase-like activity, bioimaging contrast capabilities, and *** their structural regularity and synthetic tunability, Fe-MOFs can be engineered to incorporate organic molecules or other inorganic nanoparticles, thereby creating multifunctional nanoplatforms for single or combined theranostic modes. Herein, the minireview focuses on the recent advancements of the Fe-MOFs-based nanoplatforms for self-enhanced imaging and treatment at tumor sites. Furthermore,the clinical research development of Fe-MOFs-based nanoplatforms is discussed, addressing key challenges and innovations for the future. Our review aims to provide novice researchers with a foundational understanding of advanced cancer theranostic modes and promote their clinical applications through the modification of Fe-MOFs.

关键词： Bioimaging Cancer theranostics Catalytic therapy Engineered nanoplatforms Fe-based MOFs

Understanding and probing progression of localized corrosion on inner walls of steel pipelines:an overview

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Journal of Iron and Steel Research International 2025年第1期32卷 1-18页

作者： Ming-yu Wang Hai-yuan Yao yong-fei Liu ye-sen Zhu Wan-bin Chen Yun-ze Xu Yi Huang School of Naval Architecture and Ocean Engineering Dalian University of TechnologyDalian 116024LiaoningChina China National Offshore Oil Corporation Research Institute Co. Ltd.Beijing 100028China State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentDalian University of TechnologyDalian 116024LiaoningChina

Corrosion poses a major threat to the safety of transportation ***,it is crucial to have an in-depth understanding of corrosion mechanisms in pipeline steels for the effective management of pipeline *** research on corrosion mechanisms relies on the use of efficient and reliable corrosion monitoring and analysis *** advancements in corrosion monitoring techniques specifically designed for the localized corrosion monitoring were aimed to be introduced,and a comprehensive overview of recent progress in understanding the localized corrosion mechanisms in pipeline steels was *** on the different corrosive environments encountered,the localized corrosion issues inside pipelines are classified into two categories:localized corrosion primarily influenced by electrochemical processes and localized corrosion controlled by both electrochemical and mechanical ***,a thorough analysis of the synergistic effects between micro-cell and macro-cell currents,as well as the interplay of mechanics and electrochemistry is ***,recommendations for future research on the mechanisms of internal localized corrosion in pipelines are provided.

关键词： Pipeline steel Localized corrosion Corrosion type Corrosion monitoring Corrosion mechanism

Low-concentration atropine(0.01%)on quantitative contrast sensitivity function in Chinese children with myopia

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International Journal of Ophthalmology(English edition) 2025年第1期18卷 117-124页

作者： Yu-Hao ye Yi-yong Xian Fang Liu Zhong-Lin Lyu Xing-Tao Zhou Jing Zhao Department of Ophthalmology and Optometry Eye&ENT Hospital of Fudan UniversityShanghai 200031China NHC Key Laboratory of Myopia(Fudan University) Key Laboratory of MyopiaChinese Academy of Medical SciencesShanghai 200000China Shanghai Research Center of Ophthalmology and Optometry Shanghai 200000China Shanghai Engineering Research Center of Laser and Autostereoscopic 3D for Vision Care(20DZ2255000).Shanghai 200030 China Division of Arts and Sciences NYU ShanghaiShanghai 200000China Center for Neural Science and Department of Psychology New York UniversityNew York 10012USA NYU-ECNU Institute of Brain and Cognitive Science NYU ShanghaiShanghai 200000China

AIM:To investigate the effect of 0.01%low-concentration atropine(LA)on quantitative contrast sensitivity function(qCSF)in children with ***:This paired case-control study included 90 eyes of 58 children who were sex-,age-,and refractionmatched and equally divided into two groups:the 0.01%LA group had undergone 6mo use of daily 0.01%atropine and control group was naïve to *** ophthalmic examinations and qCSF test without refractive correction were *** groups were compared in monocular and binocular qCSF parameters,including the area under logCSF,CSF acuity,and contrast sensitivity(CS)at 1.0-18.0 cycle per degree(cpd).RESULTS:In the monocular comparison,the CSF acuity of the LA group was significantly higher than that of the control group(7.58±5.51 vs 6.37±4.22 cpd,P<0.05).The subgroup analysis showed that in the 6-9y group,CSF acuity was significantly higher in the LA group than the control group(8.76±6.19 vs 6.54±4.25 cpd,P<0.05),and in the Female group,low refraction sphere group,and high refraction cylinder group,the CS at high spatial frequencies(12.0 and 18.0 cpd)were significantly higher in the LA group than in the control group(all P<0.05).In the binocular test,CSF acuity and CS at 12.0 cpd were significantly higher in the LA group than in the control group(10.95±7.00 vs 8.65±5.12 cpd;0.17±0.33 vs 0.06±0.16,respectively;both P<0.05).CONCLUSION:Use of LA may result in improved CS in children with early onset myopia.

关键词： low-concentration atropine myopia quantitative contrast sensitivity function Chinese children

Multivariate synergy for heightening ionic HOF robustness and proton conductivity

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Science China Chemistry 2025年

作者： Xiang-Tian Bai Li-Hui Cao Xu-yong Chen Jia-Yu Wang Zi-ye Zhou Shaanxi Key Laboratory of Chemical Additives for Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and Technology

Multicomponent crystalline materials construct more complex and diversified structures with different combinations and modes,which expands the material structure space and application *** this work,we have successfully synthesized two twocomponent ionic hydrogen-bonded organic frameworks （iHOF-32 and iHOF-33） and a three-component iHOF （iHOF-34）.Guanidine hydrochloride which is rich in N and H and has a short chain length strengthens the hydrogen bonding network of iHOF,thereby aiding in the efficient migration of *** rigid architecture of 1,1'-diamino-4,4'-bipyridine diiodide furnishes additional scaffolding for the iHOFs and enhances its robustness under harsh ***-34 accomplishes the combination of the ultra-high proton conductivity of iHOF-32 and the robustness of iHOF-33 by the synergistic interaction among the three components of *** addition,iHOF-34 was fabricated as a composite membrane with a peak proton conductivity of 1.55×10-1S cm-1,which is 3.8 times higher than that of recast Nafion,and has extensive potential in fuel *** self-assembly strategy of multicomponent HOFs opens up new avenues for constructing diverse structures while promising new opportunities for applications in the fields of proton conduction and energy storage.

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The ethics of theft:Reevaluating the impacts of floral larceny on plant reproductive success

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Plant Diversity 2025年第1期47卷 148-158页

作者： Jin-Ru Zhong Xiao-Fang Jin Michael C.Orr Xiao-Qing Li yong-Deng He Sheng-Wei Wang Qing-Feng Wang Chun-Feng Yang Zhong-Ming ye College of Life Science Wuhan UniversityWuhan 430072China Entomologie Staatliches Museum für Naturkunde StuttgartStuttgart 70191Germany Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Plant Diversity and Specialty Crops Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China

Plants and their interaction partners offer unparalleled views of evolutionary *** larceny,entailing nectar extraction without pollinating,is thought to be an example of a harmful,antagonistic behavior,but the precise consequences of floral larceny on plant reproductive success remain *** conducted a comprehensive meta-analysis of 153 studies across 120 plant species,using 14 moderators to assess the effects of floral larceny on plant reproductive success and examine the key *** found that floral larceny negatively impacts flower traits,pollinator visitation,pollen deposition,and fruit set,while having a neutral effect on critical female fitness indicators,such as seed set and seed quality,as well as on male *** altering pollinator behavior,floral larceny may reduce geitonogamy,potentially enhancing genetic ***,factors such as pollinator type,plant mating system,and pollen limitation were identified as key moderators of these *** analysis reveals an ultimately neutral effect of floral larceny on plant reproductive success,with potential benefits in certain *** findings suggest that floral larceny plays a complex and multifaceted role within plant-pollinator interactions,facilitating the evolutionary stability and coexistence of floral larcenists and host plants.

关键词： Floral larceny Nectar robbing Nectar thief Plant-pollinator interactions Plant reproductive success Indirect effects