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| 1 | Effects of dynamic recrystallization and strain-induced dynamic precipitation on the corrosion behavior of partially recrystallized Mg-9Al-lZn alloys显示文摘The corrosion susceptibility of recrystallized and un-recrystallized grains in equal channel angular pressed(ECAPed)Mg-9Al-lZn(AZ91)alloys immersed in chloride containing media was investigated through immersion testing and an electrochemical microcell technique coupledwith high resolution techniques such as scanning Kelvin probe force microscopy(SKPFM),transmission electron microscopy(TEM),andelectron backscatter diffraction(EBSD).During ECAP,dynamic recrystallization(DRX)and strain-induced dynamic precipitation(SIDP)simultaneously occurred,resulting in a bimodal grain structure of original elongated coarse grains and newly formed equiaxed fine grainswith a large volume fraction ofβ-Mg17Al12 precipitates.Corrosion preferentially initiates and propagates in the DRXed grains,owing tothe greater microchemistry difference between theβ-Mg17Al12 precipitates formed at the DRXed grain boundaries and the adjacentα-Mgmatrix,which induces a strong microgalvanic coupling between these phases.Additionally,the weaker basal texture of the DRXed grainsalso makes these grains more susceptible to electrochemical reactions than the highly textured un-DRXed grains.The influence of dynamicrecrystallization and dynamic precipitation was also studied in ECAPed alloys with differenl levels of deformation strain through corrosion andelectrochemical techniques.Increasing the strain level led to a more uniform corrosion with a shallow penetration depth,lower corrosion ratevalues,and higher protective ability of the oxide film.Furthermore,higher levels of strain resulted in greater hardness values of the ECAPedalloys.The superior corrosion resistance and strength of the ECAPed alloys with increasing strain level was attributed to the combination ofsmaller DRXed grain size,higher DRX ratio,and higher volume fraction of uniformly distributed fineβ-Mg17Al12 precipitates.c 2020 Published by Elsevier B.V.on behalf of Chongqing University. | Yenny Cubides Dexin Zhao Lucas Nash Digvijay Yadav Kelvin Xie Ibrahim Karaman Homero Castaneda | 2020 | Journal of Magnesium and Alloys2020，8，4： | 3 |
| 2 | Finite element analysis of gradient z -coil induced eddy currents in a permanent MRI magnet显示文摘 | Xia Li Ling Xia Wufan Chen Feng Liu Stuart Crozier Dexin Xie | 2010 | Journal of Magnetic Resonance2010，，1： | 1 |
| 3 | A Posteriori Error Estimation and Adaptive Mesh Refinemnent Controlling in Finite Element Analysis of 3-D Steady State Eddy Current Fields显示文摘 | Li Jinbiao Xie Dexin Liu Xiaoming | 2010 | IEEE Trans Magnetics2010，46，8： | 1 |
| 4 | A Direct Field-circuitmotion Coupled Modeling of Switched Reluctance Motor 显示文摘 | Xie Dexin Yan Xiuke Zhang Yihuang | 2004 | IEEE Trans on Magnetics2004，40，2： | 1 |
| 5 | An improved engineering model of vector magnetic properties of grain-oriented electricalsteels显示文摘 | Zhang Yanli Eum Young Hwan Xie Dexin | 2008 | IEEE Transactions on Magnetics2008，44，11： | 1 |
| 6 | Analysis of induction motor using Field-Circuit coupled Time-Periodic finite element method taking account of hysteresis显示文摘 | Wang Xiaoyan Xie Dexin | 2009 | IEEE Transactions on Magnetics2009，45，3： | 1 |
| 7 | Circulating current computation and transposition design for large current winding of transformer with multi-section strategy and hybrid optimal method显示文摘 | Xie Dexin Yan Xiuke Yao Yingying | 2000 | IEEE Transactions on Magnetics2000，36，4： | 1 |
| 8 | Computa-tion of 3D magnetic leakage field and stray losses in largepower transformer 显示文摘 | Zhanxin Zhu Dexin Xie Gang Wang | 2012 | IEEE Transactions on Magnetics2012，48，2： | 1 |
| 9 | 3-D FEM analysis in electromagnetic system considering vector hysteresis and anisotropy显示文摘 | Wang Xiaoyan Xie Dexin Bai Baodong | 2008 | IEEE Transactions on Magnetics2008，44，6： | 1 |
| 10 | A Direct Field-circuit- motion Coupled Modeling of Switched Reluctance Motor显示文摘 | XIE Dexin YAN Xiuke ZHANG Yihuang | 2004 | IEEE Trans on Magnetics2004，40，2： | 1 |
| 11 | An improved engineering model of vector magnetic properties of Grain-oriented electrical steels显示文摘 | Zhang Yanli Young Hwan Eum Xie Dexin | 2008 | IEEE Transactions on Magnetics2008，44，11： | 1 |
| 12 | Analysis of Induction Motor Using Field-Circuit Coupled Time-Periodic Finite Ele- ment Method Taking Account of Hysteresis显示文摘 | Xiaoyan Wang Dexin Xie | 2009 | IEEE Transactions on Magnetics2009，45，3： | 1 |
| 13 | A new method for solving line equations with large sparse symmetric and Indefinite coefficients matrix 显示文摘 | Wang Jinming Xie Dexin Bai Baodong | 2004 | IEEE Trans on Magnetics2004，40，2： | 1 |
| 14 | A novel optimal design method of passive shimming for permanent MRI显示文摘 | Yanli Zhang Dexin Xie Baodong Bai | 2008 | IEEE Transactions on Magnetics2008，44，6： | 1 |
| 15 | A new development of fully open MRI magnet by a hybrid FEM-NESM computation显示文摘 | Zhang Yanli Xie Dexin | 2006 | Journal of Electromagnetic Wave and Application2006，20，6： | 1 |
| 16 | Integrating NLP and Ontology Matching into a Unified System for Automated Information Extraction from Geological Hazard Reports显示文摘Many detailed data on past geological hazard events are buried in geological hazard reports and have not been fully utilized. The growing developments in geographic information retrieval and temporal information retrieval offer opportunities to analyse this wealth of data to mine the spatiotemporal evolution of geological disaster occurrence and enhance risk decision making. This study presents a combined NLP and ontology matching information extraction framework for automatically recognizing semantic and spatiotemporal information from geological hazard reports. This framework mainly extracts unstructured information from geological disaster reports through named entity recognition, ontology matching and gazetteer matching to identify and annotate elements, thus enabling users to quickly obtain key information and understand the general content of disaster reports. In addition, we present the final results obtained from the experiments through a reasonable visualization and analyse the visual results. The extraction and retrieval of semantic information related to the dynamics of geohazard events are performed from both natural and human perspectives to provide information on the progress of events. | Qinjun Qiu Zhen Huang Dexin Xu Kai Ma Liufeng Tao Run Wang Jianguo Chen Zhong Xie Yongsheng Pan | 2023 | Journal of Earth Science2023，34，5： | 0 |
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