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CCT Curves of Low-Carbon Mn-Si Steels and Development of Water-Cooled bainitic Steels

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Journal of Iron and Steel Research International 2010年第3期17卷 46-50页

作者： xu feng-yun wang yong-wei bai bing-zhe fang hong-sheng Key Laboratory for Advanced Materials of Ministry of Education Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

CCT curves of Mn-Si steels with different manganese contents or carbon contents were determined. The results show that the transformation range of bainite can be separated from that of ferrite when the manganese content approaches a certain content, and the incubation period of ferrite increases more significantly than that of bainite transformation with the increase of carbon content in Mn-Si steels. Furthermore, water-cooled bainitic steels without adding expensive alloying element were developed. Granular bainite was obtained when a bar with diameter of 300 mm was cooled by water, and a mixed microstructure of granular bainite and martensite was obtained in watercooled plate with thickness of 40 mm. The developed water-cooled bainitic Steels containing no expensive alloying element showed a good combination of strength and toughness. The tensile strength, yield strength, and toughness （AKU at --20℃ ） of bar with diameter of 300 mm after water cooling were higher than 850 MPa, 620 MPa, and 65 J, respectively, and those of plate with thickness of 40mm after water cooling were higher than 1000 MPa, 800 MPa, and 50J, respectively.

关键词： bainitic steel water cooling granular bainite CCT curve Mn-Si steel

New Duplex Microstructure of Grain Boundary Allotriomorphic Ferrite/Granular bainite

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Journal of Iron and Steel Research International 2002年第2期9卷 33-38页

作者： xu Ping-guang fang hong-sheng bai bing-zhe wang zhen-jia YANG Zhi-gang HUANG Jin-feng Tsinghua University Central Iron&Steel Research Institute

This was a feasibility study for a modified 304 steel resistant to stress corrosion cracking (SCC) in aqueous environment containing chloride. SCC tests were conducted potentiostaticaly with spot welded specimens, which had both crevice and residual stress, mainly in 3 % NaCl solution at various temperatures to determine the critical temperature for SCC at and below which the steel would not suffer from SCC. The effects of individual alloying element of silicon, manganese and copper on SCC of 18Cr 14Ni steels which phosphor content is 0.002 % and molybdenum content is 0.01 % were examined. Addition of 1 or 2 % of copper has beneficial effect on resistance to SCC, while increasing silicon or manganese content has no significant effect. Critical temperature of the steel with 0.002 % of phosphor and 2 % of copper is 150 ℃, which is markedly higher than 50 ℃ of 304L steel. However, the beneficial effect of copper is reduced with increasing phosphor content. From practical viewpoint, the modified steel with good SCC resistance should have 0.01 %-0.015 % of phosphor and 0.3 % or more of molybdenum, because it is very difficult to reduce phosphor content below 0 008 % industrially and such molybdenum content is inevitably introduced through cost saving melting process using return steel. Aluminium is to be added as another alloying element and 3 % of aluminium combined with 2 % of copper has been found to negate the deleterious effects of increased phosphor and molybdenum content. As a candidate steel at this stage, 14Cr 16Ni 0.013P 2Cu 1Al (0.3 1)Mo steel has critical temperature of 110 ℃.

关键词： austenitic stainless steel NaCl solution stress corrosion cracking

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空冷贝氏体钢的残余应力对屈服强度的影响

材料热处理学报 2009年第5期30卷 119-121页

作者：王勇围许峰云白秉哲方鸿生清华大学材料科学与工程系北京100084

测量了贝氏体超强精轧螺纹钢筋正火态和低温回火后的屈服强度,结果表明,正火态的屈服强度值较低,经300℃低温回火后屈服强度提高约230MPa。同时用盲孔法测定了该两种状态下的表层残余应力值,正火态高达270MPa左右,低温回火后表层残余应... 详细信息

测量了贝氏体超强精轧螺纹钢筋正火态和低温回火后的屈服强度,结果表明,正火态的屈服强度值较低,经300℃低温回火后屈服强度提高约230MPa。同时用盲孔法测定了该两种状态下的表层残余应力值,正火态高达270MPa左右,低温回火后表层残余应力降至70MPa左右,正火态低的屈服强度可能与试样内部高的残余拉应力有关;低温回火能显著降低残余应力,有效提高贝氏体超强钢筋的屈服强度。

关键词：贝氏体超强螺纹钢筋屈服强度残余应力

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha bai Yu bai Yang bai Vipul bairathi Csaba Balazs Philip Bambade yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance xuejun Chang Yue Chang zhe Chang Xinyuan Chang wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-Xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen wei Chen Xiang Chen Xiaoyu Chen Xin Chen xun Chen xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-yun Dai Xinchen Dai xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-Li Luo yong-Heng Zhao Gang Zhao Li-Cai Deng Xiao-wei Liu Yi-Peng Jing Gang wang Hao-Tong Zhang Jian-Rong Shi Xiang-Qun Cui Yao-Quan Chu Guo-Ping Li Zhong-Rui bai Yue Wu Yan Cai Shu-yun Cao Zi-Huang Cao Jeffrey L.Carlin Hai-Yuan Chen Jian-Jun Chen Kun-Xin Chen Li Chen xue-Lei Chen Xiao-Yan Chen Ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou Cui Yi-Qiao Dong bing Du Dong-wei Fan Lei feng Jian-Ning Fu Peng Gao xue-Fei Gong Bo-Zhong Gu Yan-Xin Guo Zhan-Wen Han Bo-Liang He Jin-Liang Hou yong-Hui Hou Wen Hou hong-Zhuan Hu Ning-sheng Hu Zhong-Wen Hu Zhi-Ying Huo Lei Jia fang-Hua Jiang Xiang Jiang Zhi-Bo Jiang Ge Jin Xiao Kong xu Kong Ya-Juan Lei Ai-Hua Li Chang-Hua Li Guang-wei Li Hai-Ning Li Jian Li Qi Li Shuang Li Sha-Sha Li Xin-Nan Li Yan Li Yin-Bi Li Ye-Ping Li Yuan Liang Chien-Cheng Lin Chao Liu Gen-Rong Liu Guan-Qun Liu Zhi-Gang Liu Wen-Zhi Lu Yu Luo Yin-Dun Mao Heidi Newberg Ji-Jun Ni Zhao-Xiang Qi yong-Jun Qi Shi-Yin Shen Huo-Ming Shi Jing Song Yi-Han Song Ding-Qiang Su hong-Jun Su zheng-hong Tang Qing-sheng Tao Yuan Tian Dan wang Da-Qi wang feng-Fei wang Guo-Min wang Hai wang hong-Chi wang Jian wang Jia-Ning wang Jian-Ling wang Jian-Ping wang Jun-Xian wang Lei wang Meng-Xin wang Shou-Guan wang Shu-Qing wang Xia wang Ya-Nan wang You wang Yue-Fei wang You-Fen wang Peng wei Ming-Zhi wei hong Wu Ke-Fei Wu xue-bing Wu Yu-Zhong Wu Xiao-zheng Xing Ling-zhe xu Xin-Qi xu Yan xu Tai-sheng Yan De-Hua Yang Hai-feng Yang Hui-Qin Yang Ming Yang zheng-Qiu Yao yong Yu Hui Yuan Hai-Bo Yuan Hai-Long Yuan wei-Min Yuan Chao Zhai En-Peng Zhang Hua-wei Zhang Jian-Nan Zhang Li-Pin Zhang wei Zhang yong Zhang Yan-Xia Zhang zheng-Chao Zhang Ming Zhao fang Zhou xu Zhou Jie Zhu yong-Tian Zhu Si-Cheng Zou fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

关键词： techniques: spectroscopic survey—data release—catalog

Data release of the LAMOST pilot survey

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Research in Astronomy and Astrophysics 2012年第9期12卷 1243-1246页

作者： A-Li Luo Hao-Tong Zhang yong-Heng Zhao Gang Zhao Xiang-Qun Cui Guo-Ping Li Yao-Quan Chu Jian-Rong Shi Gang wang Jian-Nan Zhang Zhong-Rui bai Xiao-Yan Chen feng-Fei wang Yan-Xin Guo Jian-Jun Chen bing Du Xiao Kong Ya-Juan Lei Yin-Bi Li Yi-Han Song Yue Wu Yan-Xia Zhang Xin-Lin Zhou fang Zuo Peng Du Lin He Wen Hou Yi-Qiao Dong Jian Li Guang-wei Li Shuang Li Jing Song Yuan Tian Meng-Xin wang yong-Hui Hou Zhi-Ying Huo hong-Zhuan Hu Ning-sheng Hu Zhong-Wen Hu Lei Jia fang-Hua Jiang Xiang Jiang Zi-Bo Jiang Ge Jin Ai-Hua Li Qi Li Yin-Dun Mao zheng-hong Tang Qing-sheng Tao Liang-Ping Tu Da-Qing wang Dan wang Jian-Ping wang Lei wang Shou-Guan wang Shu-Qing wang Ya-Nan wang You wang Yue-Fei wang Ming-Zhi wei Xiang-Xiang xue Xiao-zheng Xing Ling-zhe xu Xin-Qi xu Yan xu De-Hua Yang Shi-Hai Yang zheng-Qiu Yao yong Yu Hui Yuan Chao Zhai En-Peng Zhang Jing Zhang Li-Ping Zhang weiZhang yong Zhang zhen-Chao Zhang Ming Zhao fang Zhou yong-Tian Zhu Jie Zhu Si-Cheng Zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China lal @ lamost o rg Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Technologyof China Hefei 230026 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Institute of Architecture Design and Research Chinese Academy of Sciences Beijing 100190China

This paper describes the data release of the LAMOST pilot survey, which includes data reduction, calibration, spectral analysis, data products and data access. The accuracy of the released data and the information about the FITS headers of spectra are also introduced. The released data set includes 319 000 spectra and a catalog of these objects.

关键词： techniques: spectroscopic survey — data reduction — data release

Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： He-Xin Liu Yue Huang Guang-Cheng Xiao Qing-Cui Bu Jin-Lu Qu Shu Zhang Shuang-Nan Zhang Shu-Mei Jia fang-Jun Lu Xiang Ma Lian Tao wei Zhang Li Chen Li-Ming Song Ti-Pei Li Yu-Peng xu xue-Lei Cao yong Chen Cong-Zhan Liu Ce Cai Zhi Chang Gang Chen Tian-Xiang Chen Yi-Bao Chen Yu-Peng Chen wei Cui wei-wei Cui Jing-Kang Deng yong-wei Dong Yuan-Yuan Du Min-xue Fu Guan-Hua Gao He Gao Min Gao Ming-Yu Ge Yu-Dong Gu Ju Guan Cheng-Cheng Guo Da-wei Han Jia Huo Lu-Hua Jiang wei-chun Jiang Jing Jin yong-Jie Jin Ling-Da Kong bing Li Cheng-Kui Li Gang Li Mao-Shun Li wei Li Xian Li Xiao-Bo Li xu-fang Li Yang-Guo Li zheng-wei Li Xiao-Hua Liang Jing-Yuan Liao bai-sheng Liu Guo-Qing Liu hong-wei Liu Xiao-Jing Liu Yi-Nong Liu Bo Lu xue-feng Lu Qi Luo Tao Luo Bin Meng Yi Nang Jian-Yin Nie Ge Ou Na Sai Ren-Cheng Shang Xin-Ying Song Liang Sun Ying Tan You-Li Tuo Chen wang Guo-feng wang Juan wang Ling-Jun wang Weng-Shuai wang Yu-Sa wang Xiang-Yang Wen bai-Yang Wu Bo-bing Wu Mei Wu Shuo Xiao Shao-Lin Xiong He xu Jia-wei Yang sheng Yang Yan-Ji Yang Yi-Jung Yang Qi-Bin Yi Qian-Qing Yin Yuan You Ai-Mei Zhang Cheng-Mo Zhang Fan Zhang hong-Mei Zhang Juan Zhang Tong Zhang Wan-Chang Zhang Wen-Zhao Zhang Yi Zhang Yi-Fei Zhang yong-Jie Zhang Yuan-Hang Zhang Yue Zhang Zhao Zhang Zhi Zhang Zi-Liang Zhang Hai-sheng Zhao Xiao-Fan Zhao Shi-Jie zheng Yao-Guang zheng Deng-Ke Zhou Jian-feng Zhou Yu-xuan Zhu Ren-Lin Zhuang Yue Zhu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany Department of Astronomy Beijing Normal UniversityBeijing 100088China Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031

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液压支架活柱用水淬贝氏体钢的开发

钢铁 2009年第10期44卷 75-77页

作者：许峰云白秉哲方鸿生王筑生刘桂花清华大学北京100084 贵阳特殊钢有限责任公司贵州贵阳550005 郑州煤矿机械集团有限责任公司河南郑州450013

为提高液压支架活柱用材料的淬透性,开发了液压支架活柱用水淬贝氏体钢,并进行了工业试制。开发的水淬贝氏体钢,不含昂贵合金元素,淬透性好,强韧性高,加工性能优良,能满足300 mm以下活柱的淬透性要求。300 mm的活柱经水淬后,获得了... 详细信息

为提高液压支架活柱用材料的淬透性,开发了液压支架活柱用水淬贝氏体钢,并进行了工业试制。开发的水淬贝氏体钢,不含昂贵合金元素,淬透性好,强韧性高,加工性能优良,能满足300 mm以下活柱的淬透性要求。300 mm的活柱经水淬后,获得了粒状贝氏体组织,经低温回火后,300 mm活柱的屈服强度大于620 MPa,抗拉强度大于850 MPa,-20℃冲击韧度AKU>65 J。

关键词： Mn系贝氏体钢淬透性液压支架活柱 27SiMn