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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 steel (Group) Co Ltd,Compact Strip Production Plant,baotou 014010,China) Northeastern Univ State Key Lab Rolling & Automat Shenyang 110004 Peoples R China baotou iron & steel Grp Co Ltd Compact Strip Prod Plant Baotou 014010 Peoples R China

The effects of technological parameters on microstructures and properties of low cost hot rolled dual-phase steel was researched by design different finish rolling temperature,mid cooling temperature between laminar cooling and UFC (ultra fast cooling) and stable UFC rate on the same gauge strips with the same chemistry composition during the manufacture *** is the key for controlling coil temperature to control finish rolling temperature and mid cooling temperature between laminar cooling and UFC that based on stable UFC rate *** lower finish rolling temperature,with mid cooling temperature between laminar cooling 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 cooling temperature between laminar cooling and UFC hot rolled dual-phase steel microstructures and properties

Design ＆ Application of Low Stress Mould in Thin Slab Continuous Casting

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Design ＆ Application of Low Stress Mould in Thin Slab Conti...

2006年薄板坯连铸连轧国际研讨会

作者： XU Rong-jun1, LI Yong-quan1, ZHANG yong-qin2, LI De-gang2 (1.Baoshan iron and steel Co. Ltd., Shanghai 201900, China 2.baotou iron and steel (Group) Co., baotou 014010, China)

A new type of mould named as low stress mould for thin slab continuous casting is introduced. It is used in one of CSP plant and one pilot caster (Baosteel) in China and the result shows successful. N

关键词： thin slab continuous casting mould low stress

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稀土对25CrMoVB钢组织性能的影响

物理测试 2011年第6期29卷 1-4页

作者：刘靖姚晓乐贺景春北京科技大学材料科学与工程学院北京100083 包头钢铁集团内蒙古包头014010

在石油套管用钢25CrMoVB中加入镧+铈混合稀土,研究发现在锻造组织中,随着稀土含量增加,组织有细化均匀的趋势;在热处理后的试验钢组织中,稀土的加入使组织中出现了韧性好的下贝氏体。稀土的加入明显提高了25CrMoVB钢的常温力学性能和高... 详细信息

在石油套管用钢25CrMoVB中加入镧+铈混合稀土,研究发现在锻造组织中,随着稀土含量增加,组织有细化均匀的趋势;在热处理后的试验钢组织中,稀土的加入使组织中出现了韧性好的下贝氏体。稀土的加入明显提高了25CrMoVB钢的常温力学性能和高温屈服强度,使冲击性有所改善,特别是在常温和-80℃时,效果明显。但稀土含量过高会导致力学性能略有下降。

关键词：稀土组织力学性能 25CrMoVB钢

INTERGRANULAR FRACTURE OF AS-QUENCHED MARTENSITE IN HIGH CARBON steelS

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Acta Metallurgica Sinica(English Letters) 1990年第1期3卷 58-64页

作者： LIU Zongchang baotou iron and steel University,China LIU Zongchang Associate Professor,Division of Materials and Heat Treatment,baotou iron and steel University,baotou,China

A mechanism of intergranular fracture of as-quenched martensite in high carbon steels has been *** coarse grains of austenite transform to martensite,the grain plays a role of the unit of volume dilation,inhomogeneous strains necessarily produce and local microscop- ic stress concentrations create at grain *** reduces the intergration of the grains, sometimes intergranular cracks may *** the action of first kind hardening stress or external force,the intergranular cracks propagated along the grain boundaries will form. This results in the candy-like fracture.

关键词： as-quench martensite intergranular fracture inhomogeneous strain

Cancer　Epidemiological　Studies　in　Workers　of　baotou　iron　and　steel　Company，China

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中华放射医学与防护杂志 1996年第1期16卷 5-11页

作者： $$$$Tao Zufan Sun Quanfu (Laboratory of Industrial Hygiene, MH, Beijing 100088)Li Lin and Wang Lili (Institute of Labour Hygiene, baotou lron and steel Company, baotou) Laboratory of Industrial Hygiene MH Beijing 100088 China Institute of Labour Hygiene Baotou Iron and Steel Company Baotou

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关键词： baotou Cancer China Company iron steel Studies Workers and in

RATE OF SILICOTHERMIC REDUCTION OF TiO_2 IN TiO_2 CONTAINING SLAG MELT

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中国有色金属学会会刊：英文版 1996年第2期6卷 49-52页

作者： Yang Baoxiang Li Zaimiao(Panzhihua iron and steel Institute, Panzhihua 617000) Panzhihua iron and steel Institute Panzhihua 617000 China

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ＲＡＴＥＯＦＳＩＬＩＣＯＴＨＥＲＭＩＣＲＥＤＵＣＴＩＯＮＯＦＴｉＯ_２ＩＮＴｉＯ_２ＣＯＮＴＡＩＮＩＮＧＳＬＡＧＭＥＬＴＹａｎｇＢａｏｘｉａｎｇ；ＬｉＺａｉｍｉａｏ（ＰａｎｚｈｉｈｕａＩｒｏｎａｎｄＳｔｅｅｌＩｎｓｔｉｔｕｔｅ，Ｐａｎｚｈｉｈｕａ６１７...

关键词： mathematic model silcothermic reduction TiO2 containing slag melt

THREE NEW Fe-BASED MICROCRYSTALLINE ALLOYS WITH SUPERIOR MAGNETIC PROPERTIES

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Acta Metallurgica Sinica(English Letters) 1992年第12期5卷 502-511页

作者： ZHANG Yanzhong NIAN Suzhen Shanghai iron and steel Research Institute Shanghai iron and steel Research Inst Shanghai China

Three new Fe-based microcrystalline alloys,i.e.,Fe_(73.1)Cu_(1.2)Nb_(3.2)Si_(12 5)B_(10), Fe_(73)Cu_1Nb_(1.5)Mo_2Si_(12.5)B_(10) and Fe_(73)Cu_1Zr_3C_(0.5)Mo_Si_(12.5)B_(10),were developed with su- perior magnetic properties.e.g.,high relative initial permeability of μ_i^15×10~4,low coercivity of H_c1.0A/m,high effective permeability and low core losses in a consid- crable wide frequency range and high pulse-magnetic permeability under narrow pulse. The optimum value of relative effective permeability,μ_5~1 is 16×10~4 under condition of f=1 kHz and H_m=0.4 A/*** optimum values of core loss reach 57.9 30.2 and 68 W/kg under condition of f=50.100.100 KHz and B_m=0.5,0.2,0.3 T,respectively. These three alloys have superior stability of magnetic *** permeability may be not changed during heating at 130℃ up to 216 *** main crystalline phase is ordered phase Fe_((75)+y)Si_((25)-y) which is ultrafine particles of average size 10—20 nm.

关键词： microcrystalline alloy relative initial permeability effective permeability coercivity core loss ultrafine particle

Investigation on Variation of Inclusions and Total Oxygen in IF steel After RH Deoxidization

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Journal of iron and steel Research International 2011年第S2期18卷 347-351页

作者： SHU Hong-fu1,2, LIU Liu1, LIU Xue-hua2, ZHANG Xiao-feng2 (1.Central iron and steel Research Institute, Beijing 100081, China 2. Technology Centre of Maanshan iron and steel Co Ltd, Maanshan 243000, Anhui, China) Cent iron & steel Res Inst Beijing 100081 Peoples R China Maanshan iron & steel Co Ltd Ctr Technol Maanshan 243000 Anhui Peoples R China

The variational regulation of inclusions and total oxygen in the IF Molten steel during the RH refining process after deoxidization was studied. The results show that the relationship between total oxygen content and time is in accord with the following equation, T.O=271.25e-1.53t+23.49, R2=*** inclusion analysis investigation during RH pure circulation process indicates that the main inclusion of the IF molten steel after 2 minutes from the beginning of deoxidization is cluster inclusions of pure Al2O3 system. After 6 minutes from the aluminum deoxidization, the quantity of inclusion decreases and the inclusion style changes into block inclusions of Al2O3 system with the size of 5μm. In the other hand, some inclusions are of Al2O3-MgO. Complex inclusions of Al2O3-TiOx with the size of below 5μm, and the single particle or cluster complex inclusions with the typical square shape of Al2O3-TiN system are found after 3 minutes from titanium-ferrous alloy added. Then, the content of titanium of complex inclusions of Al2O3-TiOx decreases and the aluminum content rises along with the RH pure circulation time process. That means the inclusions of Al2O3-TiOx is not steady, and it trends to transfer into Al2O3.

关键词： IF steel inclusion RH refining

Research progress in non-equilibrium grain-boundary segregation and intergranular embrittlement

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Progress in Natural Science:Materials International 2006年第2期16卷 109-119页

作者： XU Tingdong (Central iron & steel Research Institute, Beijing 100081, China) Central iron and steel Research Institute Beijing 100081 China

This paper is a summary of the research progress made by the author in the study of non- equilibrium grain-boundary segregation and intergranular embrittlement during the last 20 years. Some new concepts and new model... 详细信息

关键词： grain-boundaries vacancies segregation embrittlement.

Magnetic Properties and Applications of Newly-developed Fe_(73.5)Cu_1Nb_(1.5)V_(1.5)Si_(13.5)B_9 Alloy

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Journal of Materials Science & Technology 1998年第6期14卷 538-542页

作者： Yanzhong ZHANG (Major R&D Lab. for Functional Metal Materials, Shanghai iron and steel Research Institute, Shanghai 2O0940, China) Major R and D Lab. for Functional Metal Materials Shanghai Iron and Steel Research Institute Shanghai 200940 China

The synthetical soft magnetic properties including d.c. and a.c. magnetic properties and pulse magnetic property are reported for a newly-developed nanocrystalline Fe73.5Cu1 Nb1.5V1.5Si13.5B9 alloy The new alloy possesses high d.c. relative initial permeability of 12.5×104 and low coerciv ity of 0.54 A/m. Under the conditions of Bm=0.3 T, f=100 kHz and Bm=0.2 T, f=200 kHz the core losses of the new alloy are 543 kW·m-3 and 834 kW.m-3, respectively which can be compa rable with those of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 alloy. The analyses of core losses have been carried out in the wider range of f=20～104 kHz and Bm=0.0025～0.8 T and the approxi mate expression P(kW·m-3)=1.803 B:f1.77 has been obtained. The analyses of core losses in the range of f=20～104 kHz and Bmf=(10～40)×103(***) have shown that the core loss and the corresponding amplitude permeability roughly vary as P = 2.347×10-6(Bmf)1.97f-0.2231 and μa = 9.56× 105f-0.7464, respectively for the given product B.f. Some practical applica tions have also been mentioned.

关键词： Cu1Nb Si Magnetic Properties and Applications of Newly-developed Fe B9 Alloy