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Texture Evolution in Heavily Cold-Rolled FeCo-2V Alloy during Annealing

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Journal of Materials Science & Technology 2009年第2期25卷 219-224页

作者： Jiangning Deng Yanling Yang Yandong Wang Jingeng CHEN Rulin Peng chenchen yuan Emmanuel Bouzy Jean-Jacques Fundenberger Key Laboratory for Anisotropy and Texture of Materials （Ministry of Education） Northeastern University Shenyang 110004 China Key Laboratory of Electromagnetic Processing of Materials （Ministry of Education） Northeastern University Shenyang 110004 China Department of Mechanical Engineering Linkoping University S-61182 LinkSping Sweden Letam Institut Superieur de Genie Mecanique et Productique Universite de Metz FR-57045 Metz France

The recrystallization texture evolution in heavily cold-rolled （93%） FeCo-2V alloy with annealing temperature and time was investigated by X-ray diffraction and electron backscatter diffraction. It was found that the orientation density of α-fiber texture component fluctuates with increasing annealing temperature and time. The transmission electron microscopy images show that abundant precipitates appear inside the recrystallized grains and around the grain boundaries. The amount and size of the precipitates also vary with annealing temperature and time. The enhancement of the α-fiber coincides well with the increase of number density of fine precipitates, indicating that the fine precipitates facilitate the development of α-fiber. The annealing texture evolution observed in the FeCo alloy could be attributed to the facilitating effect of the precipitates on the development of α-fiber and the ordering process.

关键词： FeCo alloy Annealing Texture Precipitate

Dielectr ic barr ier discharge plasma-assisted modification of g-C_(3)N_(4)/Ag_(2)O/TiO_(2)-NRs composite enhanced photoelectrocatalytic activity

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Journal of Environmental Sciences 2021年第6期33卷 113-127页

作者： Yupei Long chenchen yuan Xiaomin Wang Dongyan Jin Hong Zhou Qiongyin Wang Chenyang Lu Yuqi Chen Yanqing Cong Qi Wang Yi Zhang School of Environmental Science and Engineering Zhejiang Gongshang UniversityHangzhou310018China Ecological Environmental Science Design and Research Institute of Zhejiang Province Hangzhou310007China

Dielectric barrier discharge(DBD)plasma applied as surface treatment technology was employed for the modification of Ag_(2)O and graphitic carbon nitride(g-C_(3)N_(4))***,the pretreated powders were sequentially loaded onto TiO_(2)nanorods(TiO_(2)-NRs)via electro-deposition,followed by calcination at N_(2)*** results indicated that at the optimal plasma discharge time of 5 min for modification of g-C_(3)N_(4)and Ag_(2)O,photocurrent density of ternary composite was 6 times to bare TiO_(2)-NRs under UV-visible light *** was degraded by using DBD plasma-modified g-C_(3)N_(4)/Ag_(2)O/TiO_(2)-NRs electrode to analyze the photoelectrocatalytic *** removal rate of phenol for g-C_(3)N_(4)-5/Ag_(2)O-5/TiO_(2)-NRs electrode was about 3.07 times to that for TiO_(2)-NRs *** active species scavengers'analysis,superoxide radicals and hydroxyl radicals were the main oxidation active species for pollutants degradation.A possible electron-hole separation and transfer mechanism of ternary composite with high photoelectrocatalytic performance was proposed.

关键词： Degradation mechanism Photoelectrochemical catalysis Plasma treatment Ternary material Z-scheme structure

Correlation of microstructure and magnetic softness of Si-microalloying FeNiBCuSi nanocrystalline alloy revealed by nanoindentation

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Chinese Physics B 2024年第12期33卷 351-359页

作者： Benjun Wang Wenjun Liu Li Liu Yu Wang Yu Hang Xinyu Wang Mengen Shi Hanchen Feng Long Hou chenchen yuan Zhong Li Weihuo Li School of Materials Science and Engineering School of Metallurgical EngineeringAnhui University of TechnologyMa'anshan 243002China Wuhu Technology and Innovation Research Institute Wuhu 242000China School of Materials Science and Engineering Instrumental Analysis CenterSoutheast UniversityNanjing 211189China Institute of Advanced Magnetic Materials College of Materials and Environmental EngineeringHangzhou Dianzi UniversityHangzhou 310012China

Compared to the commercial soft-magnetic alloys,the high saturation magnetic flux density(Bs)and low coercivity(Hc)of post-developed novel nanocrystalline alloys tend to realize the miniaturization and lightweight of electronic products,thus attracting great *** this work,we designed a new FeNiBCuSi formulation with a novel atomic ratio,and the microstructure evolution and magnetic softness were *** analysis revealed that the amount of Si prompted the differential chemical fluctuations of Cu element,favoring the different nucleation and growth processes ofα-Fe ***,microstructural defects associated with chemical heterogeneities were unveiled using the Maxwell-Voigt model with two Kelvin units and one Maxwell unit based on creeping analysis by *** defect,with a long relaxation time in relaxation spectra,was more likely to induce the formation of crystal nuclei that ultimately evolved into theα-Fe *** a result,Fe_(84)Ni_(2)B_(12.5)Cu_(1)Si_(0.5)alloy with refined uniform nanocrystalline microstructure exhibited excellent magnetic softness,including a high B_(s)of 1.79 T and very low H_(c)of 2.8 A/*** finding offers new insight into the influence of activated defects associated with chemical heterogeneities on the microstructures of nanocrystalline alloy with excellent magnetic softness.

关键词： nanocrystalline alloy magnetic softness microstructures defects nanoindentation

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认知语法的哲学基础探析

外语研究 2020年第1期37卷 38-44页

作者：苑趁趁牛保义河南大学外语学院河南开封475001 黄淮学院外国语学院河南驻马店463000

受原型范畴理论影响,认知语法关注语言结构的非离散性,其语义和语法两个维度的多个观点均体现原型理论思想。语义方面包括百科知识语义观、图式性语义网络、语义-语用连续统以及合成表达式语义的部分合成性;语法方面包括句子合语法性判... 详细信息

受原型范畴理论影响,认知语法关注语言结构的非离散性,其语义和语法两个维度的多个观点均体现原型理论思想。语义方面包括百科知识语义观、图式性语义网络、语义-语用连续统以及合成表达式语义的部分合成性;语法方面包括句子合语法性判断、词库与语法连续统和语法范畴等观点。原型理论可视为认知语法的哲学基础。

关键词：认知语法非离散性原型理论连续统

Ultrasonic-assisted plastic flow in a Zr-based metallic glass

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Science China Materials 2021年第2期64卷 448-459页

作者： chenchen yuan Zhuwei Lv Changmeng Pang Xin Li Rui Liu Can Yang Jiang Ma Haibo Ke Weihua Wang Baolong Shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen518060China Songshan Lake Materials Laboratory Dongguan523808China Institute of Physics Chinese Academy of SciencesBeijing100190China

Ultrasonic vibration can be used for the micro-molding of metallic glasses(MGs)due to stress-softening and fast surface-diffusion ***,the structural rearrangement under ultrasonic vibration and its impact on the mechanical response of metallic glasses remain a *** this work,the plastic flow of the Zr35Ti30Cu8.25Be26.75 metallic glass with the applied ultrasonic-vibration energy of 140 J was investigated by *** Kelvin and Maxwell-Voigt models have been adopted to analyze the structural evolution during the creep *** increase of the characteristic relaxation time and the peak intensity of relaxation spectra can be found in the sample after ultrasonic *** effectively improves the activation energy of atomic diffusion during the glass transition(Eg)and the growth of the crystal nucleus(Ep).A more homogenous plastic deformation with a weak loading-rate sensitivity of stress exponent is observed in the ultrasonic-vibrated sample,which coincides with the low pile-up and penetration depth as shown in the cross profile of *** structural rearrangement under resonance actuation demonstrated in this work might help us better understand the defect-activation mechanism for the plastic flow of amorphous systems.

关键词： plastic deformation disordered structure activation energy metallic glass

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大型圈围工程单龙口构筑及合龙施工方法研究

人民长江 2021年第8期52卷 166-170,178页

作者：于涛白海鹏袁晨晨长江南京航道工程局江苏南京210098

大型圈围工程采用单仓圈围方案和单龙口合龙方式时,工程投入少、施工效率高、经济效益好,但目前关于此类设计施工的理论研究和工程实例却不多见。在系统总结上海南汇东滩N1库区消纳工程渣土应急圈围工程单仓圈围设计和单龙口合龙实践经... 详细信息

大型圈围工程采用单仓圈围方案和单龙口合龙方式时,工程投入少、施工效率高、经济效益好,但目前关于此类设计施工的理论研究和工程实例却不多见。在系统总结上海南汇东滩N1库区消纳工程渣土应急圈围工程单仓圈围设计和单龙口合龙实践经验的基础上,深入论述了布设位置、底坎高程、布置形式等单龙口设计的关键技术要点,对比分析了单仓圈围工程单龙口合龙的施工效率、经济效益及对施工工况的适用性,并通过龙口口门附近流场的数值模拟和水力参数分析,设计了龙口的构筑和防护方案,总结形成了适用于大型圈围工程单龙口合龙的施工工艺方法,以期为类似工程提供借鉴。

关键词：圈围工程单仓圈围龙口构筑合龙施工

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面向苹果品质检测的图像融合方法

食品与生物技术学报 2019年第9期38卷 33-40页

作者：罗晓清袁衬衬柴鹏飞李凯江南大学物联网工程学院

水果的损伤不但影响外观,还会造成营养流失和病菌感染等问题。作者提出一种面向水果品质检测的图像融合方法,为果农或经销商提供水果损伤信息。首先,对苹果的可见光图像和红外图像分别使用四元数小波变换得到低频子带与高频子带;接着,... 详细信息

水果的损伤不但影响外观,还会造成营养流失和病菌感染等问题。作者提出一种面向水果品质检测的图像融合方法,为果农或经销商提供水果损伤信息。首先,对苹果的可见光图像和红外图像分别使用四元数小波变换得到低频子带与高频子带;接着,对低频子带使用基于局部平均梯度的加权平均方法进行融合,高频子带采用基于导向滤波的绝对值取大的融合规则实现融合;最后,将融合后的高频系数与低频系数使用逆四元数小波变换得到融合后图像。实验结果表明,提出的方法很好的保留了可见光图像中表皮的细节纹理和红外图像中检测到的次表面损伤信息。该方法能够提高苹果品质检测的准确性。

关键词：品质检测图像融合四元数小波

基于UKF和SMO农用履带机器人滑动参数计算

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系统仿真学报 2015年第7期27卷 1577-1583页

作者：焦俊孔文辜丽川王强高雅袁晨晨安徽农业大学信息与计算机学院合肥230036

为保证农用履带机器人在农田环境下的稳定行驶,减少滑动现象,提出了基于UKF(Unscented Kalman Filter)和SMO(Sliding Mode Observer)的滑移参数估算方法。利用UKF算法融合机器人的运动方程和测量方程,补偿传感器的测量误差,重建机器人... 详细信息

为保证农用履带机器人在农田环境下的稳定行驶,减少滑动现象,提出了基于UKF(Unscented Kalman Filter)和SMO(Sliding Mode Observer)的滑移参数估算方法。利用UKF算法融合机器人的运动方程和测量方程,补偿传感器的测量误差,重建机器人的姿态。建立左、右履带滑动参数和滑移角的滑模观测器,引入双曲正切函数作为滑模观测器的切换函数,减弱滑模观测器符号切换函数引起的抖振,实现对滑动参数的精确估算。仿真和实验结果表明:该方法可以提供准确和高更新率的滑动量,为农用履带机器人的精确控制提供依据。

关键词：农用履带机器人无迹卡尔曼滤波滑模观测器滑动参数

Sodium Tanshinone ⅡA Sulfonate Protects Acute Pancreatitis in Mice via Inhibition of Oxidative Stress and Modulation of the ROS/Nrf2 Pathway

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Sodium Tanshinone ⅡA Sulfonate Protects Acute Pancreatitis ...