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MOdEliNG OF FERRItE GRAIN GROWtH OF LOW CARBON StEELS dURING HOt ROLliNG

Acta metallurgica Sinica(English Letters) 2002年第3期15卷 267-271页

作者： y.t. zhang, d.z. li and y.y. liinstitute of metal research, the chinese academy of sciences, shenyang 110016, china manuscript received 26 december 2001 in revised form 9 February 2002 Inst. of metal Res. Chinese Acad. of Sci. Shenyang 110016 China

For most commercial steels the prediction of the final properties depends on accurately calculating the room temperature ferrite grain size. A grain growth model is proposed for low carbon steels Q235B during hot rolling. By using this model, the initial ferrite grain size after continuous cooling and ferrite grain growing in coiling procedure can be predicted. In-plant trials were performed in the hot strip mill of Ansteel. the calculated final ferrite grain sizes are in good agreement with the experimental ones. It is helpful both for simulation of microstructure evolution and prediction of mechanical properties.

关键词： Ferrite Forecasting Grain growth Hot rolling Iron and steel plants Mathematical models Mechanical properties

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Luminosities and energies of e^(+)e^(−) collision data taken between √s=4.61 GeV and 4.95 GeV at BESⅢ

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chinese Physics C 2022年第11期46卷 64-75页

作者： M.Ablikim M.N.Achasov P.Adlarson M.Albrecht R.Aliberti A.Amoroso M.R.An Q.An X.H.Bai y.Bai O.Bakina R.Baldini Ferroli I.Balossino y.Ban V.Batozskaya d.Becker K.Begzsuren N.Berger M.Bertani d.Bettoni F.Bianchi J.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.Chelkov C.Chen G.Chen H.S.Chen M.L.Chen S.J.Chen t.Chen X.R.Chen X.t.Chen y.B.Chen z.J.Chen W.S.Cheng X.Chu G.Cibinetto F.Cossio J.J.Cui H.L.dai J.P.dai A.dbeyssi R.Ede Boer d.dedovich z.y.deng A.denig I.denysenko M.destefanis F.de Mori y.ding J.dong L.y.dong M.y.dong X.dong S.X.du P.Egorov y.L.Fan J.Fang S.S.Fang W.X.Fang y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng K Fischer M.Fritsch C.Fritzsch C.d.Fu H.Gao y.N.Gao yang Gao S.Garbolino I.Garzia P.t.Ge C.Geng E.M.Gersabeck A Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco M.H.Gu C.y Guan A.Q.Guo L.B.Guo R.P.Guo y.P.Guo A.Guskov t.t.Han W.y.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz y.K.Heng C.Herold M.Himmelreich t.Holtmann G.y.Hou y.R.Hou z.L.Hou H.M.Hu J.F.Hu t.Hu y.Hu G.S.Huang K.X.Huang L.Q.Huang L.Q.Huang X.t.Huang y.P.Huang z.Huang t.Hussain N Husken W.Imoehl M.Irshad J.Jackson S.Jaeger S.Janchiv Q.Ji Q.P.Ji X.B.Ji X.L.Ji y.y.Ji z.K.Jia H.B.Jiang S.S.Jiang X.S.Jiang y.Jiang J.B.Jiao z.Jiao S.Jin y.Jin M.Q.Jing t.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc W.Kuhn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi z.H.Lei H.Leithoff M.Lellmann t.Lenz C.li C.li C.H.li Cheng li d.M.li F.li G.li H.li H.li H.B.li H.J.li H.N.li J.Q.li J.S.li J.W.li Ke li L.J li L.K.li Lei li M.H.li P.R.li S.X.li S.y.li t.li W.d.li W.G.li X.H.li X.L.li Xiaoyu li z.y.li H.liang H.liang H.liang y.F.liang y.t.liang G.R.liao L.z.liao J.libby A.limphirat C.X.lin d.X.lin t.lin B.J.liu C.X.liu d.liu F.H.liu Fang liu Feng liu G.M.liu H.liu H.M.liu Huanhuan liu Huihui liu J.B.liu J.L.liu J.y.liu K.liu K.y.L Institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central china Normal University Wuhan 430079China china Center of Advanced Science and technology Beijing 100190China COMSAtS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Science and technology Luoyang 471003China Henan University of technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Institute of Modern Physics Lanzhou 730000China Institute of Physics and technology Peace Ave.54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear research 141980 DubnaMoscow regionRussia Justus-liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

From december 2019 to June 2021,the BESⅢ experiment collected approximately 5.85 fb^(−1) of data at center-of-mass energies between 4.61 and 4.95 *** is the highest collision energy BEPCⅡ has reached to *** accumulated e^(+)e^(−) annihilation data samples are useful for studying charmonium(-like)states and charmed-hadron *** adopting a novel method of analyzing the production of A_(c)^(+)A_(c)^(-) pairs in e^(+)e^(−) annihilation,the center-of-mass energies are measured with a precision of 0.6 *** luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha *** measurements provide important inputs to analyses based on these data samples.

关键词： luminosity center-of-mass energy BESⅢdetector

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