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Journal Name: Shanghai Metals
Founding Date: 1979, Bimonthly
Supervising Department: Shanghai Association for Science and Technology
Sponsoring Organization: Shanghai Society of Metals
Undertaking Organization: Shanghai University
Chinese Domestic Uniform Serial Number:
International Standard Serial Number
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Journal Introduction
《Shanghai Metals》is a technical journal sponsored by Shanghai Metal Society and undertaken by Shanghai University. It is a professional (iron & steel) metallurgy journal publicly issued at home and abroad in Shanghai, founded in 1979. The journal is included in the T3 level of 《Classification Catalogue of High-Quality Scientific and Technological Journals in Metallurgical Engineering and Technology Field 》, as well as the《World Journal Impact Factor (WJCI) Report (2023 Science and Technology Edition) 》. It is recognized as a Core Journal of China Science and Technology, an RCCSE China Core Academic Journal, and a National Statistical Source Journal, and is indexed by international retrieval systems such as CA, INSPEC, EBSCO, and JST. The journal primarily introduces and reflects the scientific research, development, and technological advancements in metallurgy and metal materials at home and abroad. It publishes new technologies and achievements in metallurgy, metal materials, and their applications that are advanced in China and hold practical promotion significance, aiming to promote the modernization of China's metallurgical and metal materials industry and facilitate international scientific and technological exchanges.
Development of Technologies for Refining Solidification Structure of Al-Si Alloys
ZHAO Jing;Al-Si alloys have high specific strength,excellent casting property and resistances to heat and corrosion,and are extensively used in the fields such as automotive and aerospace.However,the coarse eutectic silicon and α-Al phases caused by high silicon content will have serious influence on mechanical properties and fabricating characteristic of Al-Si alloys. Based on the demand for fine control of solidification structure of Al-Si alloys,the mechanism of technology for refining grain,the development of technologies for refining solidification structure of Al-Si alloys,including chemical inoculant(such as Sr,P and RE),Si/Zr poisoning-resistant composite grain refiners(such as Al-TCB seed alloy),physical field refining and rapid solidification technology(semi-solid forming,spray deposition),were outlined.
Effect of Rare Earth Elements Such as Lanthanum and Cerium on Microstructure and Weldability of Q355B Steel
XIAO Hailin;SUN Tao;FAN Zengwei;PEI Xinhua;LIU Yubao;ZHAO Yangyang;LIAN Xintong;DONG Han;Effect of rare earth elements such as La and Ce on microstructure and weldability of Q355B steel were investigated by optical microscope,scanning electron microscope,tensile tester and impact tester. The results showed that the Q355B steel to which the trace La and Ce elements were added exhibited microstructure consisting of ferrite and pearlite,no banded structure in the rolling direction,significantly refined grains,and improved microstructure uniformity. In addition,the large-sized elongated MnS inclusions were modified into small-sized spherical rare earth oxysulfide composite inclusions in the steel,the hardness and tensile properties of the welded joint were significantly improved,the grains in the heat-affected zone were refined,and the impact toughness was obviously enhanced.
Effect of Cryogenic Treatment on Microstructure and Properties of M35 High Speed Steel
LIU Wenbin;SUN Zhonghua;HU Jie;QU Haiyun;HUANG Liwan;QIAO Longyang;PAN Xinyu;Effects of cryogenic treatment temperatures and times at the temperature on microstructure and properties of M35 high speed steel were investigated by X-ray diffractometer,scanning electron microscope,universal tensile tester,Rockwell hardness tester and impact tester.The results showed that(a) the cryogenic treatment caused primary carbides to reduce in amount and secondary carbides to precipitate dispersively in the M35 steel;(b) with the decrease in cryogenic treatment temperature,the carbides exhibited a more uniform distribution and an increase in size;(c) with the extension of cryogenic treatment time,the secondary carbides increased in both amount and aggregation degree;(d) the temperature and time of cryogenic treatment had less effect on the hardness and more significant effect on both impact toughness and bending strength for the steel after tempering;(e) the lower the cryogenic treatment temperature,the higher the impact toughness and bending strength were,the impact toughness and bending strength of the steel cryogenically treated at -190 ℃ for 2 h were 62. 3 J/cm2 and 4 950 MPa,respectively;(f) with the extension of cryogenic treatment time,the impact toughness of the steel increased at first and then decreased,and its the bending strength increased gradually,the steel cryogenically treated at 90 ℃ for 6 h exhibited impact toughness as the highest as 57. 3 J/cm2,and the steel cryogenically treated at -90 ℃ for 10 h exhibited bending strength as the largest as 4 810 MPa.
Corrosion Behavior of HRB400 and HRB400A Steel Reinforcements in Plateau Area
ZHOU Yuli;CHAO Yuelin;DI Quankang;GONG Cui;Corrosion behavior of HRB400A steel reinforcement whose essential composition was 0. 45% Cr-0. 38% Cu-0. 11% P(by mass) used for 1,2,and 3 a in plateau area,including corrosion rate,macroscopic appearance,cross-sectional micrograph,and components of corrosion products,was investigated by camera,scanning electron microscope,X-ray diffractometer,and weight-loss method,and compared with those of HRB400 steel reinforcement without chromium and copper elements. The results showed that(a) HRB400 and HRB400A steel reinforcements all exhibited microstructure consisting of ferrite and pearlite and largely the same mechanical properties;(b) the corrosion mass-loss of HRB400A steel reinforcements used for 1,2,and 3 a in plateau area was respectively 42%,8%,and 14% less than that of HRB400 steel reinforcements used for the same lengths of time;(c) the plateau atmosphere had no evident influence on density and phase structure of the corrosion products on HRB400A steel reinforcement,and the corrosion products on HRB400 and HRB400A steel reinforcements were denser,and mainly composed of α-FeOOH and γ-FeOOH.
Effect of Aging Process on Tensile Properties and Friction-Wear Resistance of 17-4PH Stainless Steel
LIU Xin;JIN Man;LU Shijia;HU Yangyu;LI Junwan;Effect of aging process on the tensile properties and friction-wear resistance of 17-4 PH martensitic precipitation hardenable stainless steel was studied by scanning electron microscope and energy dispersive spectrometer,Vickers hardness tester,tensile tester,X-ray diffractometer,friction and wear tester. The results showed that(a) as the aging temperature increased,the 17-4 PH stainless steel increased at first and then decreased in both strength and hardness,and increased gradually in plasticity,and the steel exhibited tensile strength as high as 1 377. 2 MPa,yield strength as high as 1 326. 7 MPa,and hardness as high as 462 HV0. 5;(b) the optimal heat treatment practice was solution treatment at 1 040 ℃ for 1 h followed by water cooling,then aging at 480 ℃ for 4 h followed by water cooling;(c) the main wear mechanism was abrasive wear and adhesive wear.The wear resistance of 17-4 PH steel heat treated by the above-named optimal process was 2 times larger than that of 17-4 PH steel heat treated by the original process.
Effect of Nitrogen Content on Thermal Fatigue Performance of 4Cr5Mo2V Die-Casting Die Steel
Cao Zhaolin;Li Bingchen;Wu Haoxuan;Wu Xiaochun;Effect of nitrogen contents (0.003 2%， 0.008 3%， 0.009 9%， by mass) on the thermal fatigue property of 4Cr5Mo2V die-casting die steel was investigated via Uddeholm self-restraint thermal fatigue test. The results showed that (a) the steel with 0.003 2% N exhibited less thermal fatigue cracks whose depth was significantly less than that of cracks in the steels containing 0.008 3% and 0.009 9% N， and presented the lowest thermal fatigue damage factor and the optimal thermal fatigue resistance; and (b) the higher nitrogen content was easy to cause the carbides to aggregate along grain boundaries， thus increasing the brittleness of the grain boundaries， and promoting the initiation and propagation of cracks. Controlling nitrogen content at a lower level enabled the thermal fatigue performance of 4Cr5Mo2V steel to be improved significantly.
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Effect of Nb Content on Microstructure and Impact Toughness of Coarse-Grained Heat-Affected Zone in Low-Manganese Trace-niobium Steel
GuoYu;He Jiangli;Wang Houxin;Hong Jun;Hu Qilong;Wang Qingfeng;A thermal simulation test for welding of low-manganese trace-niobium steel was carried out by Gleeble-3800 thermal simulator， and using optical microscope， scanning electron microscope， electron back scattering diffractometer， transmission electron microscope， Thermo-Calc thermodynamic calculation and impact test， the effect of Nb content on microstructure and impact property of CGHAZ was investigated under the condition of heat input being 35 kJ/cm. The results showed that (a) as Nb content was increased， the amounts of granular bainite (GB) and acicular ferrite (AF) increased， the size of pearlite (P) decreased in CGHAZ， and the microstructure became finer; (b) the impact absorption energy (KV2) of CGHAZ at -20 ℃ increased， and the impact fractures all showed ductile-brittle mixed morphology， and the proportion of ductile zone increased gradually; and (c) the temperature of transformation of γ into α (Ar3) decreased， the volume fraction of fine dispersed (Nb， Ti)(C， N) precipitated particles increased.
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Decarburization Behavior and Factors Influencing It for Hot-Rolled Medium-Carbon Steel Plate
MA Zhizhen;HUANG Shiqi;DONG Yang;ZHANG Hui;Surface decarburization is a common defect of hot-rolled medium-carbon steel plate. The forms of decarburized layers at different positions of hot-rolled medium-carbon steel plate produced by steel plant were compared， and the effects of heating temperature and low-oxygen atmosphere on decarburization behavior of hot-rolled medium-carbon steel plate were investigated. The results showed that (a) a fully decarburized layer formed in the medium-carbon steel plate heated at 700 ℃， fully and partially decarburized layers coexisted in the steel plate heated at 800 ℃， and only a partially decarburized layer formed in the steel plate heated at 900 ℃; (b) the low-oxygen atmosphere could significantly inhibit decarburization of the steel plate; and (c) the tail edge of the steel plate exhibited the most severe decarburization due to higher temperature and higher oxygen content. Additionally， it was found that an increase in Si content was likely to aggravate decarburization of the steel plate， and an increase in Cr content enabled the decarburized depth to be significantly reduced.
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Analysis on Adherence of Zinc Coating on 2.5%Mn-0.2%Si Ultra-high Strength Steel Sheet
WANG Andong;WU Xuesong;WANG Yuming;MA Shu;HAN Zhigang;Selective oxidation behavior of substrate and zinc coating of 2.5%Mn-0.2%Si ultra-high strength steel sheet subjected to pre-oxidation plus reduction and to pre-oxidation plus oxidation in furnace zone was investigated via scanning electron microscope， dual-beam focused ion beam microscope and glow spectrograph. The selective oxidation of Mn and Si elements in the sheet was suppressed by control of the dew point of atmosphere in furnace zone to enhance the adherence of the zinc coating to the substrate. The results indicated that the adherence of the zinc coating on 2.5%Mn-0.2%Si ultra-high strength steel sheet subjected to pre-oxidation plus oxidation in furnace zone where the dew point of atmosphere was controlled at –50 ℃ was the largest.
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Effect of Ti and Zr on Microstructure and Mechanical Properties of A356 Alloy
FAN Chao;CHEN Wenwu;YUAN Runze;LIU Yang;Effects of composite addition of Ti and Zr on microstructure and mechanical properties of A356 alloys were investigated by optical microscope， scanning electron microscope， energy dispersive spectrometer， X-ray diffractometer， Vickers hardness tester and tensile tester. The results indicated that as compared with the alloy without Ti and Zr， the alloy with 0.25% Ti and 0.2% Zr by mass exhibited finer structure and relatively superior mechanical properties， the secondary dendrite arm spacing of α-Al， the average area and the length of eutectic Si reduced by approximately 30.4%， 50.9%， and 52.2%， respectively， the tensile strength， elongation， quality index， and hardness increased by about 19.5%， 25.7%， 18.6%， and 37.1%， respectively.
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THE NEW GENERATION TMCP WITH THE KEY TECHNOLOGY OF ULTRA FAST COOLING
Wang Guodong (The State Key Lab of Rolling and Automation,Northeastern University;Rolling Technology Research Base,National Engineering Research Center of Advanced Steel Technology)In order to inhibit troubles occurred in the traditional TMCP process which adopted low temperature high reduction and micro-alloying,new generation TMCP with key technology of ultra fast cooling was suggested.This tech,its characteristic and material properties were described herein,was the combination of large deformation and strain accumulation in continuous rolling.It was also pointed that this tech,being favor to recycling and stimulating sustainable development,was a new type of technology which saved resource and energy.
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PROGRESS ON METAL MATERIALS USED IN THE ULTRA LIGHT AUTO BODY
Xu Luoping Shao Guangjie Li Lin Zhang Henghua (Shanghai University)The metal materials and the technology used in the ultra light auto body both at home and abroad were reviewed,including the advanced aluminum alloy,high strength steel sheet(TRIP Steel) and the semisolid forming of aluminum alloys.The technical progress was also introduced. [
RECENT PROGRESS ON SURFACE TREATMENT TECHNOLOGIESOF TITANIUM AND TITANIUM ALLOYS
He Lijian Zhang Xiaonong (State Key Laboratory of Metal Matrix Composites, Shanghai Jiaotong University)Titanium and titanium alloys possessed many advantages, including high strength and low density, good corrosion-resistance and good high temperature properties. Titanium and titanium alloys were widely used in the space flight and aeronautic industries, the martial industry and domestic industry. But the low hardness and wear-resistance confined the further application of these materials. It was possible to improve the surface properties of these materials by proper surface treatment. The application and newly progress of several surface treatment technologies were summarized, including laser remelting, CVD, PVD, thermo-diffusion and nanostructured surface. The multi-composition and multi-layer were also mentioned.
CURRENT DEVELOPMENT OF MODERN POWDER METALLURGY MATERIALS AND TECHNOLOGIES (Ⅰ)
Huang Baiyun Yi Jianhong(State Key Laboratory of Powder Metallurgy,Central South University)The current development of modern powder metallurgy materials and technologies was reviewed.The basic characteristics,applications and developmental trend of traditional and advanced powder metallurgy materials were also introduced.Meanwhile,the research and development of new powder metallurgy technologies,such as mechanical alloying,powder injection molding,warm compaction,spray forming,microwave sintering,spark plasma sintering,self-propagation hightemperature synthesis,sinter hardening,were also described.The article is issued in two parts.
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THE DEVELOPMENT STATUS OF BEARING STEEL AND ITS GRADES SERIES
Yu Mingquan(1.School of Materials Science and Engineering,Shanghai University;2.Speecial Steel Branch,Baoshan Iron & Steel Co.,Ltd.)Complement of bearing steel series in the world was obtained after the 100 year development,which included the high carbon-chromium bearing steels,carbonized bearing steels,medium carbon bearing steel,stainless bearing steels and high temperature bearing steels.All the bearing steels stated above were produced on the special production lines with matured technologies.The production capability of bearing steels in China was over 2 million t/a,but there were still many problems in the manufacture of bearing steels such as the steel grades,standards,actual quality of finished products,special production lines.The directions of research and development in bearing steels all over the world were the super clearness(O+Ti≤10μg/g),the perfect uniformity with carbide in bearing steel and the reducing of manufacture cost,the developments of long-service life special steel grades used for the conditions of particular environment and services.
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CURRENT DEVELOPMENT OF MODERN POWDER METALLURGY MATERIALS AND TECHNOLOGIES (Ⅰ)
Huang Baiyun Yi Jianhong(State Key Laboratory of Powder Metallurgy,Central South University)The current development of modern powder metallurgy materials and technologies was reviewed.The basic characteristics,applications and developmental trend of traditional and advanced powder metallurgy materials were also introduced.Meanwhile,the research and development of new powder metallurgy technologies,such as mechanical alloying,powder injection molding,warm compaction,spray forming,microwave sintering,spark plasma sintering,self-propagation hightemperature synthesis,sinter hardening,were also described.The article is issued in two parts.
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CHEMICAL PREPARATION AND APPLICATION OF MAGNETIC Fe_3O4 NANO-PARTICLES
Li Chengkui Qi Hongzhang Yan Biao (Shanghai Key Lab.of D & A for Metal-Functional Materials,School of Materials Science and Engineering,Tongji University)The chemical preparation methods were summarized including co-precipitation,sol-gel method,micro emulsion,hydro-thermal method etc.Based on the recent progress,relative merits of those methods were analyzed.The application of Fe3O4 nano-particles in magnetic fluid,magnetic recording materials,catalytical and microwave materials and medicine were introduced.
Progress in Research on Additive Manufactured Metallic Materials Reserved for Aerospace Field
SUN Xuan;HU Bin;XIONG Zhihui;LIU Shilong;YU Yishuang;Shanghai Civil Aviation College;Starting with the demand for additive manufactured metallic materials in the aerospace field, the applications and market scale of the additive manufactured metallic materials in aerospace field were introduced. The microstructure and mechanical properties of additive manufactured alloys, including iron-and nickel-base alloys, titanium alloy and aluminum alloy, were reviewed. The typical examples of application of the four types of additive manufactured alloys to key components in aerospace field were summarized. Finally, the existent problems and future research directions of the additive manufactured metallic materials reserved for the aerospace field were pointed out.
CURRENT DEVELOPMENT OF MODERN POWDER METALLURGY MATERIALS AND TECHNOLOGIES(Ⅱ)
Huang Baiyun Yi Jianhong(State Key Laboratory of Powder Metallurgy,Central South University)The current development of modern powder metallurgy materials and technologies was reviewed.The basic characteristics,applications and developmental trend of traditional and advanced powder metallurgy materials were also introduced.Meanwhile,the research and development of new powder metallurgy technologies,such as mechanical alloying,powder injection molding,warm compaction,spray forming,microwave sintering,spark plasma sintering,self-propagation hightemperature synthesis,sinter hardening,were also described.The article is issued in two parts.
[Downloads: 4,557 ] [Citations: 67 ] [Reads: 49 ] HTML PDF Cite this article
THE DEVELOPMENT STATUS OF BEARING STEEL AND ITS GRADES SERIES
Yu Mingquan(1.School of Materials Science and Engineering,Shanghai University;2.Speecial Steel Branch,Baoshan Iron & Steel Co.,Ltd.)Complement of bearing steel series in the world was obtained after the 100 year development,which included the high carbon-chromium bearing steels,carbonized bearing steels,medium carbon bearing steel,stainless bearing steels and high temperature bearing steels.All the bearing steels stated above were produced on the special production lines with matured technologies.The production capability of bearing steels in China was over 2 million t/a,but there were still many problems in the manufacture of bearing steels such as the steel grades,standards,actual quality of finished products,special production lines.The directions of research and development in bearing steels all over the world were the super clearness(O+Ti≤10μg/g),the perfect uniformity with carbide in bearing steel and the reducing of manufacture cost,the developments of long-service life special steel grades used for the conditions of particular environment and services.
[Downloads: 3,109 ] [Citations: 149 ] [Reads: 45 ] HTML PDF Cite this article