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| 1 | Microstructure in the Weld Metal of Austenitic-Pearlitic Dissimilar Steels and Diffusion of Element in the Fusion Zone显示文摘Microstructure and alloy element distribution in the welded joint between austenitic stainless steel (1Cr18Ni9Ti) and pearlitic heat-resistant steel (lCr5Mo) were researched by means of light microscopy, scanning electron microscopy (SEM) and electron probe microanalysis (EPMA). Microstructure, divisions of the fusion zone and elemental diffusion distributions in the welded joints were investigated. Furthermore, solidification microstructure and &-ferrite distribution in the weld metal of these steels are also discussed. | Yajiang LI, Zengda ZOU and Bing ZHOU Department of Materials Engineering, Shandong University, Jinan 250061, China E-mail: yajli@jn-public.sd.cninfo.net | 2001 | Journal of Materials Science & Technology2001，17，3： | 6 |
| 2 | Effect of Al2O3np on the Properties and Microstructure of B4Cp/Al Composites显示文摘Aluminum-matrix boron carbide (B4Cp/Al) is a kind of neutron absorbing material widely used in nuclear spent fuel storage. In order to improve the tensile property of B4Cp/Al composites, a new type of nano-Al2O3 particle (Al2O3np) reinforced B4Cp/Al + Al2O3np composites were prepared by powder metallurgy method. The Monte Carlo particle transport program (MCNP) was used to determine the influence of Al2O3np on the thermal neutron absorptivity of composites. The universal material testing machine and scanning electron microscope (SEM) were used to study the mechanical properties, microstructure and fracture morphology of B4Cp/Al composites. The results indicated that the neutron absorption properties of B4Cp/Al composites were not affected by the addition of nano-Al2O3 particles in the range of 1 wt%-15 wt%. The addition of Al2O3np can obviously reduce the grain size of B4Cp/Al matrix metals thus improve the tensile strength of the composites. The addition threshold of Al2O3np is about 2.5 wt%. Both B4Cp and Al2O3np change the fracture characteristics of the composites from toughness to brittleness, and the latter is more important. | 刘婷婷 PANG Xiaoxuan XIAN Yajiang LUO Hao ZHANG Pengcheng | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，3： | 4 |
| 3 | Effect of Thermal Cycle on Microstructure and Fracture Morphology in HAZ of HQ130 Steel显示文摘The effect of different peak temperature(T_P) and cooling time(t_(8/5)) on microstructure,hardness,impact toughness and fracture morphology in the heat-affected zone(HAZ) of HQ130 steel was studied by using weld thermo-simulation test.Experimental results indicate that the impact toughness and hardness decrease with the decrease of T_P or increase of t_(8/5) under the condition of a single thermal cycle.There is a brittle zone in the vicinity of T_P = 800 ℃,where the impact toughness is considerably low.There is a softened zone in the vicinity of T_P = 700℃,where the hardness decreases but the toughness increases.In the practical application of multi-layer and multipass welding,the welding heat input should be strictly limited(t_(8/5)≤20s) so as to reduce the softness and brittleness in the HAZ of HQ130 steel. | Li Yajiang Zou Zengda Cheng Zhunian Wei Xing Jiang Quanchang | 1996 | Journal of Iron and Steel Research(International)1996，3，2： | 3 |
| 4 | The Rheological Property and Foam Morphology of Linear Polypropylene and Long Chain Branching Polypropylene显示文摘The rheological behavior, thermal properties and foam morphology of linear polypropylene and long chain branching polypropylene prepared through UV irradiation reactive extrusion were studied by rheological test, melt index test, DSC and supercritical carbon dioxide foaming technology. Rheological test and melt index test confirmed that under UV irradiation and extrusion, adding photo-initiator and cross-linking agent could achieve the purpose of branching, thus improved the melt strength of polypropylene effectively. The DSC results revealed that with the introducing of long chain branching, the melting range of the polypropylene broadened and the crystallization temperature increased. Owing to the introduction of long chain branches, polypropylene exhibited higher melt strength and strain hardening behavior. Compared with linear polypropylene, the foam morphologies of long chain branching polypropylene were more uniform. | 黄锦涛 HE Guangjian 廖霞 HUANG Yajiang YANG Qi | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，4： | 3 |
| 5 | Green tea polyphenols protect spinal cord neurons against hydrogen peroxide-induced oxidative stress显示文摘Green tea polyphenols are strong antioxidants and can reduce free radical damage. To investigate their neuroprotective potential, we induced oxidative damage in spinal cord neurons using hydrogen peroxide, and applied different concentrations(50–200 μg/mL) of green tea polyphenol to the cell medium for 24 hours. Measurements of superoxide dismutase activity, malondialdehyde content, and expression of apoptosis-related genes and proteins revealed that green tea polyphenol effectively alleviated oxidative stress. Our results indicate that green tea polyphenols play a protective role in spinal cord neurons under oxidative stress. | Jianbo Zhao Shiqiang Fang Yajiang Yuan Zhanpeng Guo Jinhao Zeng Yue Guo Peifu Tang Xifan Mei | 2014 | Neural Regeneration Research2014，9，14： | 2 |
| 6 | ATP11B deficiency leads to impairment of hippocampal synaptic plasticity显示文摘Synaptic plasticity is known to regulate and support signal transduction between neurons, while synaptic dysfunction contributes to multiple neurological and other brain disorders;however, the specific mechanism underlying this process remains unclear. In the present study, abnormal neural and dendritic morphology was observed in the hippocampus following knockout of Atpllb both in vitro and in vivo. Moreover, ATP11B modified synaptic ultrastructure and promoted spine remodeling via the asymmetrical distribution of phosphatidylserine and enhancement of glutamate release, glutamate receptor expression, and intracellular Ca^2+ concentration. Fuithermoe experimental results also indicate that ATP11B regulated synaptic plasticity in hippocampal neurons through the MAPK14 signaling pathway. In conclusion, our data shed light on the possible mechanisms underlying the regulation of synaptic plasticity and lay the foundation for the exploration of proteins involved in signal transduction during this process. | Jiao Wang Weihao Li Fangfang Zhou Ruili Feng Fushuai Wang Shibo Zhang Jie Li Qian Li Yajiang Wang Jiang Xie Tieqiao Wen | 2019 | Journal of Molecular Cell Biology2019，11，8： | 2 |
| 7 | Ultrasonic Analysis of Cracking Propagation Morphology in the Fusion Zone of High Strength Steel显示文摘Cracking morphology in the fusion zone of HQ130 high strength steel was researched by 'the y-slit test' and 'three-point bend test', ultrasonic test and microscope. HQ130 and QJ63 high strength steel was welded by Ar+CO2 gas shielded arc welding under the condition without preheating. Experimental results indicated that welding cracks were produced in the partially melted zone of the weld root of HQ130 steel side and propagated parallel to the fusion zone. The cracks were developed alternatively between the weld and the partially melted zone, and are not strictly ruptured at W/F (weld metal/fusion zone) boundary surface. Controlling weld heat input (E) about 16 kJ/cm could make the cracking rate lowest and satisfy the performance requirement of welded joint zone. | Yajiang ZengdaZOU 等 | 2002 | Journal of Materials Science & Technology2002，18，1： | 2 |
| 8 | Protein hairy enhancer of split-1 expression during differentiation of muscle-derived stem cells into neuron-like cells显示文摘Muscle-derived stem cells were isolated from the skeletal muscle of Sprague-Dawley neonatal rats aged 3 days old. Cells at passage 5 were incubated in Dulbecco's modified Eagle's medium supplemented with 10% (v/v) fetal bovine serum, 20 μg/L nerve growth factor, 20 μg/L basic fibroblast growth factor and 1% (v/v) penicillin for 6 days. Cells presented with long processes, similar to nerve cells. Connections were formed between cell processes. Immunocytochemical staining with neuron specific enolase verified that cells differentiated into neuron-like cells. Immunofluorescence cytochemistry and western blot results revealed that the expression of protein hairy enhancer of split-1 was significantly reduced. These results indicate that low expression of protein hairy enhancer of split-1 participates in the differentiation of muscle-derived stem cells into neuron-like cells. | Mina Huang Zhanpeng Guo Kun Liu Xifan Mei Shiqiang Fang Jinhao Zeng Yansong Wang Yajiang Yuan | 2012 | Neural Regeneration Research2012，7，28： | 2 |
| 9 | A study of phase constitution near the interface of Mg/Al vacuum diffusion bonding 显示文摘 | Liu Peng Li Yajiang Geng Haoran | 2005 | Materials Letters2005，59，16： | 1 |
| 10 | A study of phase constitution near the interface of Mg/Al vacuum diffusion bonding显示文摘 | Liu Peng Li Yajiang Geng Haoran | 2005 | Materials Letters2005，59，2： | 1 |
| 11 | Solid lipid nanoparticle and microemulsion for topical delivery of triptolide显示文摘 | Zhinan Mei Huabing Chen Ting Weng Yajiang Yang Xiangliang Yang | 2003 | European Journal of Pharmaceutics and Biopharmaceutics2003，，2： | 1 |
| 12 | Microstructure and phase constitution near the interface of Cu/Al vacuum brazing using Al-Si fillermetal显示文摘 | Xia Chunzhi Li Yajiang Puchkov U A | 2008 | Vacuum2008，82，： | 1 |
| 13 | Investigation of interfacial structure of Mg/Al vacuum diffusion-bonded joint显示文摘 | Liu Peng Li Yajiang Geng Haoran | 2006 | Vacuum2006，80，5： | 1 |
| 14 | Development of fibrillar morphology in immiscible PP/PS blends under shear flow显示文摘 | Mei Yuan Huang Yajiang He Yusong | 2012 | J Appl Polym Sci2012，124，6： | 1 |
| 15 | Bi2Te3 nanostruetures prepared by mierowave heating 显示文摘 | YaJiang Ying-Jie Zhu | 2007 | Journal of Crystal Growth2007，306，： | 1 |
| 16 | 显示文摘 | Shuqin Cao Yajiang Yang | 2008 | International Journal of Pharmaceutics2008，357，12： | 1 |
| 17 | The molecular structure characteristics of long chain branched polypropylene and its effects on non-isothermal crystallization and mechanical properties显示文摘 | Zhao Wangyang Huang Yajiang Liao Xia | 2013 | Polymer2013，54，4： | 1 |
| 18 | Finite element model- ing of hydrogen diffusion in fusion zone of HQ130 high strength steel显示文摘 | Li Yajiang Wang Juan Feng Jicai | 2005 | Journal of Materials Processing Technology2005，161，： | 1 |
| 19 | Microstructure characteristics in the interface zone of Ti/Al diffusion bonding显示文摘 | Ren Jiangwei Li Yajiang Feng Tao | 2002 | Materials Letters2002，56，5： | 1 |
| 20 | Effect of Blending Sequence on the Morphology and Proper- ties of Polyamide 6/EPDM-g-MA/Epoxy Blends显示文摘 | Qi Wang Jiayu Zhu Pan Wang Liping Li Qi Yang Yajiang I-Iuang | 2012 | Applied Poly- mer Science2012，3，124： | 1 |
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