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汽车排气系统高温端用B441铁素体不锈钢研制

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世界钢铁 2012年第2期12卷 42-45页

作者：王伟明李鑫毕洪运方徽源宝山钢铁股份有限公司

为了开发满足排气系统高温端零件使用要求的不锈钢产品,在实验室研究了化学成分、热处理制度对B441不锈钢性能的影响。结果表明,稳定化元素Nb、Ti的添加对改善B441不锈钢的综合性能有利。生产试制结果表明,生产的B441铁素体不锈钢产品... 详细信息

为了开发满足排气系统高温端零件使用要求的不锈钢产品,在实验室研究了化学成分、热处理制度对B441不锈钢性能的影响。结果表明,稳定化元素Nb、Ti的添加对改善B441不锈钢的综合性能有利。生产试制结果表明,生产的B441铁素体不锈钢产品具有优良的常温力学性能和耐高温性能,能够满足汽车排气系统高温端使用要求。

关键词：铁素体不锈钢汽车排气系统 Nb Ti

Cl^-致脆对不锈钢磨蚀的影响及其判据研究

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腐蚀科学与防护技术 1999年第3期11卷 156-160页

作者：毕红运姜晓霞李诗卓中国科学院金属研究所

测定了ＡＩＳＩ３０４不锈钢在不同Ｃｌ－浓度的１ｍｏｌ／ＬＨ２ＳＯ４溶液中的静态腐蚀率及腐蚀磨损率．同时利用单摆冲击划痕实验机测定了不同条件下材料表面划痕的长度随冲击能耗的变化及其比能耗值，证明了随Ｃｌ－浓度的增加，材... 详细信息

测定了ＡＩＳＩ３０４不锈钢在不同Ｃｌ－浓度的１ｍｏｌ／ＬＨ２ＳＯ４溶液中的静态腐蚀率及腐蚀磨损率．同时利用单摆冲击划痕实验机测定了不同条件下材料表面划痕的长度随冲击能耗的变化及其比能耗值，证明了随Ｃｌ－浓度的增加，材料表面的比能耗下降，即腐蚀及腐蚀磨损作用加剧原因系材料表面变脆．

关键词：腐蚀磨损单摆划痕法比能耗不锈钢氯离子

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影响双相不锈钢热塑性的诸因素讨论

上海金属 2007年第6期29卷 37-41页

作者：王晓峰陈伟庆毕洪运郑宏光北京科技大学冶金与生态工程学院北京100083 宝山钢铁股份有限公司

双相不锈钢是热塑性较差的钢,易出现热加工缺陷。因此分析了轧制温度、相比例、σ相及微量元素诸因素对双相不锈钢热塑性的影响。认为双相不锈钢在冶炼过程中要尽量降低钢中硫、氧含量并加入适量的微合金元素,在热轧过程中要严格控制开... 详细信息

双相不锈钢是热塑性较差的钢,易出现热加工缺陷。因此分析了轧制温度、相比例、σ相及微量元素诸因素对双相不锈钢热塑性的影响。认为双相不锈钢在冶炼过程中要尽量降低钢中硫、氧含量并加入适量的微合金元素,在热轧过程中要严格控制开轧和终轧温度,控制σ相析出,保证适当的相比例、冷却速率等以避免热脆性裂纹。

关键词：双相不锈钢热塑性热轧温度相比例 σ相微量元素

焊接工艺参数对新能源汽车用高强不锈钢焊缝力学性能的影响

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焊接技术 2022年第9期51卷 29-31页

作者：朱双春王宝森毕洪运许海刚李谋成江苏工程职业技术学院江苏南通226007 中国宝武钢铁集团有限公司中央研究院上海201900 上海大学材料科学与工程学院上海200072

新能源汽车用低成本Cr-Mn-Ni-N系高强不锈钢实际熔化极气体保护焊的焊接接头存在强度偏低的问题,影响在新能源汽车行业的轻量化应用。为此,采用熔化极气体保护焊,研究了Cr-Mn-Ni-N系高强不锈钢在不同的焊接电流和电弧电压条件下焊缝强... 详细信息

新能源汽车用低成本Cr-Mn-Ni-N系高强不锈钢实际熔化极气体保护焊的焊接接头存在强度偏低的问题,影响在新能源汽车行业的轻量化应用。为此,采用熔化极气体保护焊,研究了Cr-Mn-Ni-N系高强不锈钢在不同的焊接电流和电弧电压条件下焊缝强度的变化,结果表明:采用较大的焊接电流和较高电弧电压形成射流过渡的熔滴过渡形式,能够显著提升焊缝熔合比,在一定程度上提高了焊缝强度,为新能源汽车行业主机厂的高强不锈钢焊接工艺制订提供参考。

关键词：新能源汽车高强不锈钢焊接

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氢在硅系铸铁中的分布

沈阳工业大学学报 1996年第3期18卷 76-80页

作者：古可成李荣德周湘琦毕红运宋长芹黄瀛

研究了不同含硅量的硅系铸铁中氢的分布后得出：无论是化学成分分析，还是微区成分分析，随铸铁中含硅量的变化，氢的含量也发生相应的变化．这就是硅系铸铁在自然状态下，其含氢量的分布特点．文中对此做了初步的理论分析．

关键词：氢分部硅铸铁

Multi-criterion system optimization model for urban multimodal traffic network

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Science China(Technological Sciences) 2011年第4期54卷 947-954页

作者： SI bingFeng ZHANG hongyun ZHONG Ming YANG XiaoBao MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology Beijing Jiaotong UniversityBeijing 100044China School of Traffic and Transportation Beijing Jiaotong UniversityBeijing 100044China Department of Civil Engineering University of New BrunswickFrederictonNew Brunswick E3B 5A3Canada

In this paper,computational models of environmental pollution and energy consumption of urban multimodal traffic network are proposed according to pertinent research and a multi-objective programming model is then developed to formulate optimization problem for such a ***,the main factors,such as travel time,pricing and convenience which influence travelers' choice behaviors are all considered and a combined assignment model is proposed to simulate travelers' mode and route choices.A bi-level programming model,in which the multi-objective optimization model is treated as the upper-level problem and the combined assignment model is processed as the lower-level problem,is then presented to solve multi-criterion system optimization problem for urban multimodal traffic *** solution algorithms of the proposed models are also ***,the model and its algorithms are illustrated through a simple numerical example.

关键词： multi-criterion system optimization multimodal network bi-level programming

Petrochemical eigenvalues and diagrams for the identification of metamorphic rocks'protolith,taking the host rocks of Dashuigou tellurium deposit in China as an example

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Acta Geochimica 2023年第1期42卷 103-124页

作者： Jianzhao Yin Shoupu Xiang Yuhong Chao Yuhan Yin hongyun Shi College of Earth Sciences Jilin University2199 Jianshe StreetChangchun 130061China Silvercorp Metals Inc Suite 601-Building 1China View Mansion#A2 East GongTi RoadChaoyang DistrictBeijing 100027China Engineering Geology Brigade of Jiangxi Bureau of Geology 658 Jiefangxilu RoadNanchang 330002Jiangxi ProvinceChina Xuchang Electrical Vocational College Xuchang 461000China Orient Resources Ltd 9280 Kirkmond CrescentRichmondB.C V7E 1M8Canada

The Dashuigou tellurium deposit is the world’s only known independent tellurium *** restoring metamorphic rocks’protolith,we seek to understand not only the development and evolution trajectory of the region but also the origin of the relevant *** there are many ways to restore metamorphic rocks’protolith,we take the host metamorphic rocks of Dashuigou tellurium deposit and leverage various petrochemical eigenvalues and related diagrams previously proposed to reveal the deposit’s host metamorphic rocks’*** petrochemical eigenvalues include molecular number,Niggli’s value,REE parity ratio,CaO/Al_(2)O_(3)ratio,Fe^(3+) /(Fe^(3+) -+Fe^(2+) )ratio,chondrite-normalized REE value,logarithmic REE value,various REE eigenvalues including scandium,Eu/Sm ratio,total REE amount,light and heavy REEs,δEu,Eu anomaly,Sm/Nd ratio,and silicon isotope δ^(30) SiNBS-29‰,*** petrochemical plots include ACMs,100 mg-c-(al+alk),SiO_(2)-(Na_(2)O+K_(2)O),(al+fm)-(c+alk)versus Si,FeO+Fe_(2)O^(3+) TiO)-Al_(2)O_(3)-MgO,c-mg,Al_(2)O_(3)-(Na_(2)O+K_(2)O),chondrite-normalized REE model,La/Yb-REE,and Sm/Nd ratio,*** the basis of these comprehensive analyses,the following conclusions are drawn,starting from the many mantle-derived types of basalt developed in the study area of different geological ages,combined with the previously published research results on the deposit s fluid inclusions and sulfur and lead *** deposit is formed by mantle degassing in the form of a mantle plume in the late Yanshanian *** degassed fluids are rich in nano-sc ale substances including Fe,Te,S,As,bi,Au,Se,H_(2),CO_(2),N_(2),H_(2)O,and CH_(4),which are enriched by nano-effect,and then rise to a certain part of the crust in the form of mantle plume along the lithospheric fault to form the *** ultimate power for tellurium mineralization was from H_(2)flow with high energy,which was produced through radiation from the melted iron of the Earth’s outer *** H,flo

关键词： Petrochemical diagrams and eigenvalue Protolith Metamorphic rock Independent tellurium deposit Host rock The mantle plume

Hydrophilic characteristics of soft rock in deep mines

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International Journal of Mining Science and Technology 2015年第2期25卷 177-183页

作者： Guo hongyun Li bing Zhang Yumei Wang Xinbo Zhang Feng The Engineering Design Research Institute of Equipment of PLA Astronaut Center of China

A series of water absorption tests on dried soft rock have been conducted by the intelligent testing system for water absorption tests in deep soft rock, including tests of water absorption with and without pres- sure. The results show that the water absorbing capacity of rock with a certain pressure is larger than that of rock without pressure： however, the relationship between the water absorbing percentage and the time can be expressed by w（t） = a（l - e^-bt）. In hi-logarithmic coordinates, the hydrophilic relationship with time in tests with pressure could be characterized by linearity, while they present concave or convex in tests without pressure. Based on the hypothesis that each influential factor is irrelevant and they have a linear correlation with the water absorbing capacity, we calculated the weight coefficient of each factor according to experimental results under different conditions. The calculations demonstrate that the effec- tive porosity, content of smectite and kaolinite are all positively correlated with the water absorption capacity of rock; meanwhile, the fractal dimension of the effective pores presents a negative correlation with the water absorption capacity of rock. The water absorption capacity with pressure increases with increasing illite, chlorite and chlorite/smectite formation and a decrease in illite/smectite formation and the fractal dimension of the effective pores, while it is opposite in tests without pressure. The weight coefficient of smectite is smallest among positive factors, and the fractal dimension of the effective pores is the smallest amongst the negative factors.

关键词： Deep soft rock Water absorption tests Porosity Fractal dimension Clay minerals

Realizing enhanced energy storage and hardness performances in 0.90NaNbO_(3)-0.10bi(Zn_(0.5)Sn_(0.5))O_(3)ceramics

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Journal of Advanced Ceramics 2022年第5期11卷 729-741页

作者： Xiaoyan DONG Xu LI hongyun CHEN Qinpeng DONG Jiaming WANG Xiang WANG Yue PAN Xiuli CHEN Huanfu ZHOU Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi Key Laboratory of Nonferrous Materials and New Processing TechnologyMinistry of EducationSchool of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004China College of Materials Science and Engineering Sichuan UniversityChengdu 610064China

Ceramic dielectric capacitors have a broad scope of application in pulsed power supply *** behavior has manifested decent energy storage capabilities in dielectric materials due to its fast polarization *** addition,an ultrahigh energy storage density can also be achieved in NaNbO_(3)(NN)-based ceramics by combining antiferroelectric and relaxor *** of the existing reports about lead-free dielectric ceramics,nevertheless,still lack the relevant research about domain evolution and relaxor ***,a novel lead-free solid solution,(1-x)NaNbO_(3)-xbi(Zn_(0.5)Sn_(0.5))O_(3)(abbreviated as xBZS,x=0.05,0.10,0.15,and 0.20)was designed to analyze the domain evolution and relaxor *** evolutions in xBZS ceramics confirmed the contribution of the relaxor behavior to their decent energy storage characteristics caused by the fast polarization rotation according to the low energy barrier of polar nanoregions(PNRs).Consequently,a high energy storage density of 3.14 J/cm^(3)and energy efficiency of 83.30%are simultaneously available with 0.10 BZS ceramics,together with stable energy storage properties over a large temperature range(20-100℃)and a wide frequency range(1-200 Hz).Additionally,for practical applications,the 0.10 BZS ceramics display a high discharge energy storage density(W_(dis)≈1.05 J/cm^(3)),fast discharge rate(t_(0.9)≈60.60 ns),and high hardness(H≈5.49 GPa).This study offers significant insights on the mechanisms of high performance lead-free ceramic energy storage materials.

关键词： energy storage NaNbO3(NN)-based domain evolutions hardness