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Progress in Natural Science:Materials International 2010年第1期20卷 49-53页

作者： Na XING,Ying WU,Wei HAN,Shao-xiong ZHOU china iron & {2. Research group,Advanced Technology & Materials co.,ltd.,Beijing 100081,china china iron & {2. Research group Advanced Technology & Materials Co. Ltd. Beijing 100081 China

The as-cast Mg-10Ni-2.m(mole fraction,%)alloy was prepared by a simple and low-co.t two-step method of pre-alloying and vacuum induction *** nanocrystalline alloy was obtained by the melt-spun process with the surface velocity of co.per wheel of 10.5 m/*** hydrogen storage properties were examined by PCT *** enthalpy(ΔH)and entropy(ΔS)of the alloy determined by van’t Hoff plots indicate that the thermodynamic performance of the nanocrystalline alloy is improved by fast diffusion ability of hydrogen in the nanocrystalline microstructure embedding nano-particles of intermetallics co.pounds Mg2.i and *** reaction kinetics of the melt-spun alloy is greatly improved due to short diffusion path of hydrogen in the nanocrystalline microstructure,resulting in better overall hydrogen storage *** hydrogen storage capacity is 5.09%(mass fraction,hereinafter the same),and the amount of hydrogen desorption is 4.86%.The hydrogen desorption rate of 95.5%in the alloy is available.

关键词： Mg-10Ni-2.n alloy vacuum induction melting melt-spun hydrogen storage properties enthalpy entropy kinetics

co.trol of Sulfur co.tent in the Production of Clean {2. in Panzhihua {2.

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Journal of iron and steel Research(International) 2011年第S2期18卷 182-189页

作者： YANG Sen-xiang ( Panzhihua steel & vanadium co., {2.., PanGang group, Panzhihua 617060, S ichuan, china) Panzhihua steel & Vanadium co.{2. PanGang Grp Panzhihua 617060 Sichuan Peoples R China

This article mainly introduced the process of clean steel with different ways in Panzhihua steel based on high sulfur {2.tent hot metal. With the development and application of sulfur {2.trol technologies in hot metal pretreatment, {2.verter steel-making and refining processes, Panzhihua steel had achieved the production of clean steel such as 350km/h steel for high speed railway, electric steel, etc.

关键词： clean steel sulfur co.trol high speed rail steel electric steel

Development of 600MPa co.d Rolled Dual Phase steel for Automotive Application in BX steel

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Journal of iron and steel Research(International) 2011年第S1期18卷 987-989页

作者： GAO Hong-gang,CHEN Li-hong,LIU Ming-hui,YU Wen-tao,WANG Ya-fen (Technology Center of Benxi iron and steel ({2.) co.ltd.Benxi 117000,liaoning,china) Benxi iron & steel Grp {2.ltd Ctr Technol Benxi 117000 Liaoning Peoples R China

BX steel has developed 600MPa co.d rolled dual phase in order to adapt to the market *** paper introduces the design of chemical co.position,hot rolling,co.d rolling and annealing process of experimental *** finished product property meets the technical standard,the microstructure is typical dual phase,F+M(14-16%).This product has been produced co.mercially in BX steel,and has been approved by end users.

关键词： automotive application dual phase microstructure

Reducing the co.e loss of amorphous co.es for distribution transformers

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Progress in Natural Science:Materials International 2012年第3期22卷 244-249页

作者： Deren Li, Liang Zhang, Guangmin Li, Zhichao Lu, Shaoxiong Zhou china iron & {2. Research Institute group, Advanced Technology and Materials co., ltd., No. 76, Xueyuan Nan Rd., Haidian District, Beijing 100081, china china iron & {2. Research Institute group Advanced Technology and Materials Co. Ltd. No. 76 Xueyuan Nan Rd. Haidian District Beijing 100081 China

Although amorphous alloy ribbons have lower co.e loss, serious loss deterioration occurs in amorphous co.es co.structed from amorphous alloy ribbon for distribution transformer. In the present study, the loss deterioration mechanism and influencing factors of amorphous co.es for distribution transformers were investigated. The influence of distributed gaps on co.e loss of transformer co.e was calculated by simulation software and validated by experiments. The boron fluctuation of amorphous alloy ribbons affects the annealing temperature of amorphous transformer co.es. A superior co.e annealing technique with annealing parameters was developed, and appreciable decrease in co.e loss was obtained.

关键词： Amorphous co.e Annealing technique Reducing co.e loss Loss deterioration Distribution transformer

Tension and Thickness co.trol Strategy Analysis of Two Stands Reversible co.d Rolling Mill

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Journal of iron and steel Research(International) 2012年第10期19卷 20-25页

作者： LIU Guang-ming1, DI Hong-shuang2. ZHOU Cun-long1, LI Hong-cui3, LIU Jiang3 (1. co.lege of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 03002., Shanxi, china 2. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819,{2., china 3. co.d Rolling Plant, Jinan iron and steel group co.ltd, Jinan 2.0101, Shandong, china) co.lege of Materials Science and Engineering Taiyuan University of Science and Technology Taiyuan Shanxi China State Key Laboratory of Rolling and Automation Northeastern University Shenyang Liaoning China co.d Rolling Plant Jinan Iron and Steel Group Co Ltd Jinan Shandong China

In order to lucubrate the rolling characteristic of the two stands reversible co.d rolling mill and establish the tension and thickness co.trol strategy, the steady-state characteristic simulating program was established using the steady-state co.tinuous rolling theory. The influences of each factor on exit thickness under different tension co.trol methods were analyzed. The results show that, the influence of the entry stand gap on exit thickness is significant and it changes little with different tension co.trol methods. As a result, the entry stand gap can be used as the main co.trol method of exit thickness, whereas rolling speed of any stand and roll gap of the exit stand can be used to adjust the inter-stand tension. The results are beneficial for thickness and tension co.trol of the two stands reversible co.d rolling mill.

关键词： two stand reversible co.d rolling thickness tension co.trol strategy

The Applications and Practice of Front Ultra Fast co.ling Technology in C-Mn steel

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Journal of iron and steel Research(International) 2011年第S1期18卷 576-580页

作者： ZUO Jun 1,LIU Yong 2.ZHANG Kai-hua 1,YE Xiao-yu 1,LI Wei-ping 2.HUANG Xu-jing 2.(1.PanGang group Research Institute co.{2.,Chengdu,611731,Sichuan,china 2.PanGang group Panzhihua steel & Vanadium co.{2.,Panzhihua,617067,Sichuan,china) PanGang Grp Res Inst co.ltd Chengdu 611731 Sichuan Peoples R China PanGang Grp Panzhihua steel & Vanadium co.{2. Panzhihua 617067 Sichuan Peoples R China

Ultra Fast co.ling is a new technology which used to co.trol the hot-rolling strip co.ling in recent years on the international *** can achieve fast and accurate temperature co.trol in the hot-rolled strip production process to obtain co.responding transformation microstructure and ideal mechanical *** article describes the technical principle and layout of ultra fast co.ling in hot-rolled as well as co.ling *** the effect of front ultra fast co.ling technology in C-Mn steel and obtained co.sequent on the industrial produced low-co.t Q345 hot rolled steel in Panzhihua {12. and steel.

关键词： ultra fast co.ling co.trolled rolling and co.trolled co.ling Q345 low-co.t

Development and Production of X12. Strip With Excellent Toughness in Shougang steel

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Journal of iron and steel Research(International) 2011年第S1期18卷 908-914页

作者： ZHANG Yong-qing 1,LI Ming 2.LI Yong-dong 1,JIN Wei 2.ZHU Guo-sen 1,LI Yan-feng 3,TIAN Peng 3,WANG Quan-li 1,WU Xin-lang 2.WANG Xue-qiang 2.(1.Shougang Research Institute of Techonolgy,Beijing,china 2.Qian’an iron and {2. co.pany of Shougang group,Hebei Province,china 3.North china Petroleum {2. Pipe co.,ltd) Shougang Res Inst Techonolgy Beijing Peoples R China Qianan iron & steel co Shougang Grp Qianan Hebei Province Peoples R China N china Petr steel Pipe {2.ltd Shouguang City Shandong Peoples R China

In this paper,the product designs,mechanical properties and microstructure of ultra-high strength linepipe steel in grade X12. strip with a thickness of 16mm have been shown and analyzed *** tensile test results with different directions,including transverse,longitudinal and 30° to the rolling direction,showed that the yield strength and ultimate tensile strength reach and exceed 900MPa and 1000MPa respectively,which are far higher than requirements of X12.,such as 82.MPa and *** the other hand,as shown from the test results of Charpy impact tests at different temperatures from 2. ℃ to-60 ℃,the absorbed energies and fracture shear area at-60℃ are about 2.0J and 100% respectively,which is very exciting and *** order to clarify the strengthening mechanism and effect of X12. strip further,microstructure has been observed through *** of the metallography revealedthat the microstructure was co.posed of lower bainitewith a size of 1um and fine M/A *** X12. strip was formed into 142. mm diameter spiral welded pipe in Huabei pipe *** results showed that ultra-high strength and high toughness linepipe co.ld be achieved through reasonable alloy co.position design and optimized rolling processes.

关键词： linepipe steel ultra-high strength excellent toughness ultra-fined bainite X12.

Effects of Technological Parameters on Microstructures and Properties of Low co.t Hot Rolled Dual-Phase steel on CSP Line

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Journal of iron and steel Research(International) 2011年第S1期18卷 615-620页

作者： DONG Rui-feng 1,2.LI De-gang 1,2.YAN Bo 2.WANG Guo-dong 1 (1.The State Key Lab of Rolling and Automation,Northeastern University,Shenyang 110004,china 2.Baotou iron and {2. (group) co.ltd,co.pact Strip Production Plant,Baotou 014010,china) Northeastern Univ State Key Lab Rolling & Automat Shenyang 110004 Peoples R China Baotou iron & steel Grp {2.ltd Compact Strip Prod Plant Baotou 014010 Peoples R China

The effects of technological parameters on microstructures and properties of low co.t hot rolled dual-phase steel was researched by design different finish rolling temperature,mid co.ling temperature between laminar co.ling and UFC (ultra fast co.ling) and stable UFC rate on the same gauge strips with the same chemistry co.position during the manufacture *** is the key for co.trolling co.l temperature to co.trol finish rolling temperature and mid co.ling temperature between laminar co.ling and UFC that based on stable UFC rate *** lower finish rolling temperature,with mid co.ling temperature between laminar co.ling and UFC,the better to form martensite *** foundation of developing the similar productions on the similar product line was *** is good to technological advancement of developing high affixation value production as hot rolled DP steel,TRIP steel *** CSP line.

关键词： finish rolling temperature mid co.ling temperature between laminar co.ling and UFC hot rolled dual-phase steel microstructures and properties

Preparation and Magnetic Properties of Mn-Zn Ferrites by the co.precipitation Method

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Journal of Wuhan University of Technology(Materials Science) 2009年第6期24卷 875-878页

作者：李雪张俊喜 School of Environmental and Chemical Engineering Shanghai University Electrochemical Research group Shanghai University of Electric PowerKey Laboratory of State Power Corporation of China

Mn-Zn ferrites （Mn1-xZnxFe2.4） with different co.positions were prepared by the co.recipitation method, and the influences of such synthesis co.ditions as pH value, co.position and volume ratio （R） of the mixed solution and NH4Hco. solution on their microstructures and magnetic properties were discussed. The samples were characterized by X-ray diffraction （XRD） and magnetization measurement instrument. Lattice parameters and average crystalline size of the synthesized materials were calculated from the co.responding XRD patterns with the related software Jade.5. For samples of different pH values, only one phase was found when pH values were 7.0, 8.0 and 9.0. The sample with pH value of 7.0 exhibited the highest saturation magnetic induction, the lowest co.rcive force, and crystallized best. For samples of different R values with pH value of 7.0, only one phase was observed in all samples, and the sample with R value of 2.3 exhibited the highest saturation magnetic induction and the lowest co.rcive force. The co.position has mainly afected the magnetic properties, and the saturation magnetic induction increases with the increase of the co.tent of Zn （x）, but decreases when x is beyond 0.6. The trend of co.rcive force is on the co.trary. However, no magnetism is exhibited when the x value is up to 0.8.

关键词： co.precipitation method microstructure magnetic property Mn-Zn ferrite