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Journal of Wuhan University of Technology(Materials Science) 2020年第1期35卷 192-199页

作者：刘自立刘春明 DING Jianhua zhang hanqian School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Central Research Institute(R&D Center) Baoshan Iron&Steel Co.Ltd.Shanghai 201900China

In order to study the high temperature flow behaviour of the V modified 2.25Cr-1Mo steel plate to guide the industrial rolling practice, the hot compression tests were carried out at the temperatures from 900 ℃ to 1150 ℃ and the strain rates from 0.01s^-1 to 1 s^-1 on Thermecmastor-Z equipment. Based on the experimental data of the hot compression tests, a kind of Arrhenius-type constitutive equation was *** equation can accurately show the relationship between the flow stress and the deformation temperature, the strain and the strain rate. The measured true stress-true strain curves exhibit two kinds of flow stress curves. Moreover, the forming mechanisms of these two types curves were explained by softening, wok hardening theory as well as metallographic and hardness experimental results. The accuracy of the developed Arrheniustype constitutive equation was identified by three kinds of statistic parameters and also by comparison of the measured and predicted data. The reasonable value of the three types of statistic parameters and the good agreement between the experimental and predicted data can confirm the validity of the developed Arrheniustype constitutive equation for V modified 2.25 Cr-1 Mo heat resistant steel plate.

关键词： flow behaviour characterization modelling V modified 2.25Cr-1Mo steel heat resistant steel plate

Development of S11306+SA516Gr70 roll-bonded clad steel plate for pressure vessels

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Baosteel Technical Research 2017年第2期11卷 42-48页

作者： HOU Hong zhang hanqian zhang Aiwen School of Materials & Metallurgy Northeastern University Research Institute Baoshan Iron & Steel Co.Ltd.

To meet the demand of the pressure vessel industry, Baosteel has developed an S11306 ＋ SA516Gr70 roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are performed to systematically evaluate the steel plate in normalized state and normalized ＋ stress relieved state. The results show the cladding interface of the Sl1306 ＋ SA516Gr70 roll-bonded clad steel plate has high shear strength, and the base metal has good mechanical properties. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels.

关键词： pressure vessel S 11306 + SA516Gr70 roll-bonded clad steel plate normalized SR property

Fracture toughness of 12Cr2Mo1R steel at elevated temperature

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Baosteel Technical Research 2015年第2期9卷 30-35页

作者： LIU Huibin zhang hanqian Research Institute Baoshan Iron & Steel Co.Ltd.

The microstructure, tensile properties, and fracture toughness of 12Cr2Mo1R steel were studied. The results indicate that this steel is characterized by a bainite microstructure, in which several types of carbides precipitate along the ferrite laths. As the temperature increases from room temperature to 375℃ ,the strength of the steel increases slightly and the fracture toughness clearly decreases. However, when the temperature continues to increase up to 500 ℃, the strength decreases and the fracture toughness increases. At all the temperatures investigated,the strength and toughness of the developed 12Cr2Mo1R steel were capable of meeting the design requirements of a high-temperature gas-cooled reactor. The fracture of 12Cr2Mo1R steel at high temperature typically occurs in the ductile mode.

关键词： 12Cr2Mo1R elevated temperature tensile property fracture toughness ductile fracture

NEW VIEW OF CHARACTERISTIC ZONE CLASSIFICATION OF FUSION WELDING JOINT

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Chinese Journal of Mechanical Engineering 1995年第4期8卷 325-331页

作者： zhang hanqian Wang Bao Wu Yu Lu Wenxiong (Taiyuan University of Technology)

A new view of characterstic zone classification of fusion welding joint has been put for-ward on the base of a number of metallograplic observations and researches. TLe characteristiczones of the joint include (1) homogenous mixture region (2)heterogerous mixture zone, (3)partically melting zone and (4) heat-affected zone. (1) and (2) consist of the weld metal. (2) and (3)compose the bond, the boundary betweer (2) and (3) is the fusion line Four kinds of characteristicappearences in the ' heterogenous mixture zone' are induced. The formation process of thecharcteristic zones is distussed in detail. The differences between authors' classification and W. ***'s one are compared, to hoping that the formation essence and composition feature of fusionwelding joint can be reasonably reflected.

关键词： Fusion welding joint Characterstic zore Terminology

The effect of different cooling and tempering conditions on the strength and toughness of SA533B steel

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Baosteel Technical Research 2014年第2期8卷 26-30页

作者： LIU Huibin zhang hanqian Research Institute Baoshan Iron & Steel Co.Ltd

The microstmcture and mechanical properties of SA533B low-alloy steel were investigated under different cooling and tempering conditions. Steel plates cooled at 40℃/s and 25℃/min,exibited microstructures of auto-tempered martensite and bainite, respectively. During tempering, the strength of steels quenched at the two different cooling rates decreased continuously with an increase in the tempering parameter, which is defined by T （20 ＋ log t）, where T is the temperature and t is the holding time. However, the rate of change of the strength scales with the degree to which the virgin microstructure deviates from equilibrium. The strength of the martensitic steel decreased faster and finally obtained a value close to that of the bainitic steel. The ductility and toughness gradually improved during tempering, passed through a maximum value, and finally diminished. The level of maximum toughness was also found to depend on the cooling rates of SA533B steel. The high cooling rate with a microstructure of auto-tempered martensite exhibited a larger toughness and a lower ductile-brittle transition temperature than the low cooling rate with a microstructure of bainite, because the former had finer precipitated cementite particles at quenching and a slower coarsing rate during tempering.

关键词： SA533B steel cooling rate tempering strength toughness

Microstructure and properties of S30403+Q345R roll-bonded clad steel plate for pressure vessels

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Baosteel Technical Research 2017年第1期11卷 40-48页

作者： HOU Hong zhang hanqian JIAO Sihai School of Materials & Metallurgy Northeastern University Research Institute Baoshan Iron & Steel Co.Ltd.

To meet the demand of the domestic pressure vessel industry for roll-bonded clad steel plates, Baosteel has developed an S30403 ＋ Q345R roll-bonded clad steel plate. Comprehensive inspections of the composition, microstructure, and properties are made to systematically evaluate the steel plate in the normalized and normalized ＋ stress relieved states. The results show the cladding interface of the S30403 ＋ Q345R roll-bonded clad steel plate has high shear strength, the base metal has good properties, and the mechanical properties of the steel plate head and tail are uniform. The performance is fully consistent with the technical requirements of the roll-bonded clad steel plate for pressure vessels.

关键词： pressure vessel S30403 + Q345R roll-bonded clad steel plate normalized stress relieved property

FERONIA-mediated TIR1/AFB2 oxidation stimulates auxin signaling in Arabidopsis

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Molecular Plant 2024年第5期17卷 772-787页

作者： Baiyan Lu Shengnan Wang hanqian Feng Jing Wang Kaixing zhang Yilin Li Ping Wu Minmin zhang Yanshu Xia Chao Peng Chao Li School of Life Sciences East China Normal UniversityShanghai 200241China National Facilty for Protein Science Shanghai Zhangjang LabShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China

The phytohormone auxin plays a pivotal role in governing plant growth and *** the TRANSPORT INHIBITOR RESPONSE1/AUXIN SIGNALING F-BOX(TIR1/AFB)receptors function in both the nucleus and cytoplasm,the mechanism governing the distribution of TIR1/AFBs between these cellular compartments remains *** this study,we demonstrate that auxin-mediated oxidation of TIR1/AFB2 is essential for their targeting to the *** showed that small active molecules,reactive oxygen species(ROS)and nitric oxide(NO),are indispensable for the nucleo-cytoplasmic distribution of TIR1/AFB2 in trichoblasts and root *** studies revealed that this process is regulated by the FERONIA receptor kinase–NADPH oxidase signaling ***,ROS and NO initiate oxidative modifications in TIR1C140/516 and AFB2C135/511,facilitating their subsequent nuclear *** oxidized forms of TIR1C140/516 and AFB2C135/511 play a crucial role in enhancing the function of TIR1 and AFB2 in transcriptional auxin ***,our study reveals a novel mechanism by which auxin stimulates the transport of TIR1/AFB2 from the cytoplasm to the nucleus,orchestrated by the FERONIA–ROS signaling pathway.

关键词： FERONIA TIR1/AFBs oxidative modification nucleo-cytoplasmic distribution root hair development

Development of SA-533 Type B CL. 1+SA-240 Type 304L roll-bonded clad steel plate for safety injection tank of CAP1400 nuclear power plant

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Baosteel Technical Research 2017年第1期11卷 18-25页

作者： HOU Hong zhang hanqian YUAN Xiangqian DING Jianhua School of Materials & Metallurgy Northeastern University Research Institute Baoshan Iron & Steel Co.Ltd.

Aiming to meet the demand of the country＇ s nuclear demonstration project on the CAP1400 nuclear power plant, Baosteel uses the roll-bonding technology and develops the SA-533 Type B CL. 1 ＋ SA-240 Type 304L high-strength and high-toughness clad steel plate with a shear strength of over 310 MPa for the nuclear power plant＇ s safety injection tank. The properties of the quenched and tempered and the simulated post-weld heat treatment states are systematically studied herein through a comprehensive inspection and evaluation of the composition,microstructure,and properties of the clad steel plate. The results show that the bonding interface has high shear strength and that the base metal has high strength and good toughness at low temperatures. Hence, the performance fully meets the technical requirements of the CAP1400 nuclear power plant＇ s safety injection tank in the country＇ s nuclear demonstration project. The roll-bonded clad steel plate can be used to manufacture the safety injection tank of the CAP1400 nuclear power plant.

关键词： CAP1400 nuclear power plant safety injection tank SA-533 Type B CL. 1 + SA-240 Type 304Lrolling clad steel plate quenched and tempered simulated post-weld heat treatment property

Preventive effect of kiwi berry(Actinidia arguta)on loperamide-induced constipation

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Food Science and Human Wellness 2024年第3期13卷 1410-1421页

作者： Jiyue zhang Bin Li Ningxuan Gao Haikun Li Xingyue Cui hanqian Jiang Siyi Tang Chenyu Jin Jinlong Tian College of Food Science Shenyang Agricultural UniversityShenyang 110866China

Constipation is a common intestinal *** berries can effectively prevent ***,studies have yet to be done to determine how kiwi berries prevent *** two weeks,mice in this study were continually orally gavaged with kiwi berry,loperamide,or a combination of the *** study found that the kiwi group's feces had more water than the constipated *** addition,kiwi berries can speed up gastrointestinal transit(GI),shorten the time it takes to pass the first dark stool,and dramatically enhance body weight *** the interstitial cells of Caj al(ICC)cells and colon tissues,alterations in the protein expression of vasoactive intestinal peptide(VIP),cyclic adenosine monophosphate(cAMP),protein kinase A(PKA),and aquapcrin-3(AQP3)were *** 3,6,and 12 h of ICC cells and mouse colon,the kiwi group's VIP,cAMP,PKA,and AQP3 protein expression levels were lower than those of the constipated *** kiwi berry can decrease the Firmicutes to Bacteroidetes ratio and boost the diversity and quantity of gut *** influencing the gut microbiota and VIP-cAMP-PKA-AQP3 signaling pathway,kiwi berries prevent constipation.

关键词： Kiwi berry Constipation VIP-cAMP-PKA-AQP3 Gut microbiota

Effect of Tempering Temperature on the Microstructure and Mechanical Properties of V Modified 12Cr2Mo1R Steel Plate

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Effect of Tempering Temperature on the Microstructure and Me...