Current Articles

2025, Volume 46,  Issue 3

Industry Status and Analysis
2024 China’s titanium industry development report
AN Zhongsheng, ZHAO Wei
2025, 46(3): 1-8. doi: 10.7513/j.issn.1004-7638.2025.03.001
Abstract(62) HTML (14) PDF(17)
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Based on comprehensive industry chain data from China’s titanium sector in 2024, this study systematically analyzed the production capacity, output, applications, and import-export dynamics of key products including titanium concentrate, sponge titanium, titanium ingots, and titanium processed mater...
Status and development of titanium dioxide industry of China in 2024
BI Sheng
2025, 46(3): 9-11. doi: 10.7513/j.issn.1004-7638.2025.03.002
Abstract(20) HTML (4) PDF(7)
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This paper comprehensively analyzes the operational status of China’s titanium dioxide industry in 2024. The data reveals a total output of 4.766 million tons (14.57% year-on-year growth) with suboptimal capacity utilization rate of 80.8%, indicating overcapacity. Rutile-type products dominate at 85...
Separating and Extracting of Vanadium and Titanium
Efficient metallurgical extraction of vanadium slag: mechanochemically enhanced sodium salt roasting vanadium extraction process
QIAO Lu, XIANG Junyi, HUANG Qingyun, LI Lanjie, LÜ Xuewei
2025, 46(3): 12-17. doi: 10.7513/j.issn.1004-7638.2025.03.003
Abstract(37) HTML (8) PDF(6)
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To resolve the low conversion rate in single-pass roasting and ring formation in rotary kilns during conventional sodium roasting-water leaching process, this study proposed an innovative mechanical activation-granulation co-pretreatment technology. High-energy ball milling was introduced to promote...
Research on short-process vanadium extraction technology from stone coal based on phosphate-assisted leaching
ZHU Zhenzhou, WU Jinpeng, GAO Chenlong, WANG Wei, JIAO Shuqiang
2025, 46(3): 18-24. doi: 10.7513/j.issn.1004-7638.2025.03.004
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Aiming at the mineral phase analysis and traditional treatment process of a stone-coal vanadium mine in Hubei, a short-flow vanadium extraction process with phosphate-assisted leaching was developed. The vanadium extraction process using sulfuric acid curing - phosphate-assisted leaching - solvent e...
Impurities composition prediction and control of FeV50 alloy by aluminothermal reduction
YU Bin, YE Mingfeng, WANG Ning, HUANG Yun, GAO Leizhang, YIN Danfeng, CHEN Haijun
2025, 46(3): 25-31. doi: 10.7513/j.issn.1004-7638.2025.03.005
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The thermodynamic behavior of typical impurity elements in the preparation process of FeV50 alloy by aluminum thermal reduction and their stable occurrence state in the alloy were analyzed, and the distribution law of impurity elements under specific slag characteristics conditions was investigated....
Comparison of the reducing activity of coke powder and semi-coke and its application in the carbonization process of Ti-bearing blast furnace slag
LU Ruifang, QIU Shuxing, ZHAO Qing’e, LÜ Xueming, HUANG Jiaxu, LIU Yadong
2025, 46(3): 32-40. doi: 10.7513/j.issn.1004-7638.2025.03.006
Abstract(15) HTML (5) PDF(3)
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In the process of titanium extraction from Ti-bearing blast furnace slag by “high temperature carbonization and low temperature chlorination”, high temperature carbonization is very critical and important. The carbonaceous reducing agent used in the high temperature carbonization process directly af...
Application of Vanadium and Titanium
Microstructure and properties of ultra-high strength diffusion-bonded joint between TC21 titanium alloy and G50 steel
LIU Jiao, CHENG Peixin, XI Jinhui
2025, 46(3): 41-44, 52. doi: 10.7513/j.issn.1004-7638.2025.03.007
Abstract(26) HTML (10) PDF(4)
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An ultra-high strength joint between TC21 titanium alloy and G50 high-strength steel had been prepared by an improved diffusion bonding in this study. Under the constraints of a rigid mold, the diffusion bonding using the V and Cu as interlayers was carried out at 915 ℃ for 60 minutes with an axial ...
Influence of pre-strain and heat treatment on subsequent deformation behavior of Ti6321 titanium alloy
YIN Yanchao
2025, 46(3): 45-52. doi: 10.7513/j.issn.1004-7638.2025.03.008
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Pre-tension and heat treatment were performed on the Ti6321 alloy, and their effects on subsequent deformation behavior were investigated and compared. The results show that the compressive yield strength of the specimen decreases after pre-tension, and the decrease amplitude increases first and the...
Microstructure and mechanical properties of TA16 bar with different heat treatment temperatures
FAN Yuting, PENG Li, LI Jingmao, QIN Haixu
2025, 46(3): 53-59. doi: 10.7513/j.issn.1004-7638.2025.03.009
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The effect of heat treatment temperature on the microstructure, texture, and mechanical properties of Ø230 mm TA16 bar was studied. The results show that the original microstructure of the forged bar is an elongated and deformed equiaxed structure in both horizontal and vertical directions. Twin cry...
Effect of recrystallization annealing on microstructures and properties of TA1 electron beam welded joint
DENG Jian, BAI Wei, LU Xin, LI Chao
2025, 46(3): 60-64. doi: 10.7513/j.issn.1004-7638.2025.03.010
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Recrystallization annealing was performed on 30 mm thick TA1 plates with electron beam welding. Metallographic examination, tensile and impact tests were performed on the welded joint in order to study the effect of recrystallization annealing process on the microstructures and mechanical properties...
Feasibility study of titanium-nickel based super elastic alloy as the sealing material for oil well tubing and casing
WANG Xinhu, WANG Peng
2025, 46(3): 65-69. doi: 10.7513/j.issn.1004-7638.2025.03.011
Abstract(11) HTML (5) PDF(4)
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In response to the current problem that premium connections cannot effectively ensure the sealing of oil and gas well tubing string, the titanium nickel and titanium nickel vanadium shape memory alloys were selected. These alloys were subjected to forging and water quenching at different temperature...
Progress in molecular dynamics simulation of NiTi shape memory alloys
DENG Lingli, GAO Haigen, ZHAO Xiangyu
2025, 46(3): 70-80. doi: 10.7513/j.issn.1004-7638.2025.03.012
Abstract(11) HTML (4) PDF(3)
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Molecular dynamics (MD) serves as an indispensable tool for investigating the microstructure and organization of atomic-scale materials, providing invaluable guidance for experimental research while concurrently mitigating research costs. This technique effectively compensates for the paucity of exp...
Resources Environment and Energy Saving
Research status and prospects of reduction and upgrading technology of converter steel slag under the Dual-Carbon background
HU Yanzhuo, SHEN Zhenzhong, HAN Shaohui, LI Chenxiao, YAO Xin, WANG Shuhuan
2025, 46(3): 81-91. doi: 10.7513/j.issn.1004-7638.2025.03.013
Abstract(22) HTML (6) PDF(6)
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As a high-energy consumption and high-carbon emission sector, the steel industry’s carbon reduction pathway plays a crucial role in achieving the“Dual-Carbon”goals. The converter steel slag is rich in valuable elements like Fe, P and V, and carries high-calorific waste heat, and its efficient ultili...
Simulation study on granulation characteristics of blast furnace slag water jet
WU Xinchen, LOU Guofeng, XIAO Yongli, FENG Pengbo
2025, 46(3): 92-99. doi: 10.7513/j.issn.1004-7638.2025.03.014
Abstract(11) HTML (3) PDF(3)
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Given the potential problems of the conventional gas quenching granulation process, such as the high gas consumption, this study intends to carry out a numerical simulation study of the slag granulation process under the action of high-speed water jet, using water flow as the granulation medium. The...
Enrichment and recovery of zinc from a high zinc blast furnace ash by hydrocyclone method
YANG Zhen, WANG Xiaodong, REN Shilei, HUANGFU Lin, ZENG Guanwu, ZHANG Xiaolong, LIN Gang
2025, 46(3): 100-106. doi: 10.7513/j.issn.1004-7638.2025.03.015
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In order to fully recover and utilize the valuable elements in the blast-furnace ash, the physical and chemical properties of the high-zinc blast-furnace ash produced by the ferro-smelting of vanadium titanium magnetite in a Sichuan iron and steel enterprise were analyzed. The hydrocyclone method wa...
Development of hot metal pre-dephosphorization agent based on the resource utilization of sludge in continuous casting swirl wells
YANG Guang, LI Haiqiang, JIA Jixiang, WANG Haiwei, GU Hongfei
2025, 46(3): 107-111. doi: 10.7513/j.issn.1004-7638.2025.03.016
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In order to develop a P-removal agent for molten iron by using the sludge from the continuous casting swirl well to realize the resource utilization, the pre-dephosphorization agent with w(CaO): w(sludge) =0, 7%, 14%, 20%, 25% and 30% was prepared, and the melting performance measurement and P remov...
Ferrous Metallurgy and Materials
Study on the influence of highly oxygen enrichment and H2-rich oxygen blast furnace atmospheres on softening-melting behaviors of vanadium titanomagnetite mixed burden
CHEN Mao, CHEN Buxin, MA Kaihui, TANG Wenbo, LIU Lingling, HU Meilong
2025, 46(3): 112-121. doi: 10.7513/j.issn.1004-7638.2025.03.017
Abstract(28) HTML (6) PDF(6)
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This study investigates the effects of oxygen-enriched, oxygen blast furnace, and H2-rich oxygen blast furnace atmospheres on the softening-melting behaviors, permeabilities, and gas utilization efficiency of vanadium titanomagnetite mixed burden. The results indicate that under oxygen-rich blast fu...
Research on the evolution of inclusions in 20CrMnTi gear steel and the improvement of steel liquid cleanliness
LI Haitao, GAO Fang, LI Haozhe, LI Likai, ZHANG Xiaohua, GU Chao, BAO Yanping
2025, 46(3): 122-131. doi: 10.7513/j.issn.1004-7638.2025.03.018
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In this work, taking a domestic factory’s 20CrMnTi gear steel as the research object, the limiting factors for improving the cleanliness of the steel liquid were analyzed through systematic sampling, and two optimization measures were proposed. Firstly, based on FactSage7.2, the effects of refining ...
Influence of flow control devices on the flow field of a double-strand slab tundish based on numerical simulation and water modeling
YANG Zeyu, YANG Jian, ZHAO Yuhang, LI Yuntong
2025, 46(3): 132-139, 148. doi: 10.7513/j.issn.1004-7638.2025.03.019
Abstract(8) HTML (3) PDF(3)
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In order to study the influence of flow control devices on the molten steel flow field in a 78 ton large double strand symmetrical tundish in a certain steel plant, a combined method of numerical simulation and water modeling was adopted to investigate the effects of changes in different flow contro...
The effect of mixed rare earth additions on inclusions in 18 MnCr petroleum casing steel
MENG Yuxiang, TIAN Jiazhi, ZHANG Yuling, DENG Xuyan, GAO Hui, TIAN Qingchao
2025, 46(3): 140-148. doi: 10.7513/j.issn.1004-7638.2025.03.020
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In order to study the changes of RE content during the process of steelmaking and continuous casting and the RE distribution in inclusions, 18MnCrRE steel was prepared by electric arc furnace melting. After ladle furnace refining and vacuum degassing (VD), mixed rare earth RE was added to the steel ...
Competitive precipitation law of nitrides during continuous casting cooling process of boron-containing steel
ZHANG Haohao, HE Chun, GAO Qi, WU Jiao, LONG Yanli, ZHANG Yanming, LONG Mujun, CHEN Dengfu
2025, 46(3): 149-156. doi: 10.7513/j.issn.1004-7638.2025.03.021
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During continuous casting cooling process of boron-containing steel, the precipitation of BN not only reduces the effective boron content, weakening the beneficial effects of boron alloying, but also increases the crack sensitivity of the as-cast billet. Clarifying the competitive precipitation law ...
Construction of constitutive model for GH4169 alloy under high temperature and high strain rate
ZHANG Jilin, TANG Linhu, MA Furong, LI Zhonglin, HA Jinfu
2025, 46(3): 157-166. doi: 10.7513/j.issn.1004-7638.2025.03.022
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The quasi-static compression test and dynamic impact test of GH4169 alloy were carried out by universal testing machine (UTM5305) and Hopkinson dynamic testing device (ALT 1000), respectively. The quasi-static test data of strain rates of 0.001, 0.003 and 0.1 s–1 at room temperature were obtained. T...
Effect of annealing on microstructure and mechanical properties of CrCoNi medium entropy alloy rolled at room temperature and liquid nitrogen temperature
CHEN Jinliang, JIN Xueyuan, YI Jianhong
2025, 46(3): 167-173, 204. doi: 10.7513/j.issn.1004-7638.2025.03.023
Abstract(13) HTML (4) PDF(3)
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The as-casted CrCoNi medium entropy alloy was rolled at room temperature and liquid nitrogen temperature, respectively, and then annealed at medium and low temperatures in short period respectively. The difference of strength and improvement of the alloy under room temperature rolling + annealing an...
Effect of yttrium doping on microstructure and mechanical properties of CoCrFeNi high entropy alloy prepared by molten salt electrolysis
HU Mengjun, YANG Hao, LUO Xiangyu, WEN Liangying, HU Meilong
2025, 46(3): 174-179. doi: 10.7513/j.issn.1004-7638.2025.03.024
Abstract(10) HTML (5) PDF(3)
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High-entropy alloys of CoCrFeNi had been prepared by electrolysis process using the mixed oxides as the raw materials, and the effects of rare earth element of Yttrium doping on the phase, microstructure and mechanical properties of CoCrFeNi high-entropy alloys were also studied. The results show th...
Effects of ageing treatment on the microstructures and tensile properties of maraging stainless steel
SUN Yue, ZHENG Huaibei, SHENG Zhendong, WANG Yinghu, LIU Dexue, WANG Bin, ZHANG Peng
2025, 46(3): 180-186. doi: 10.7513/j.issn.1004-7638.2025.03.025
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The microstructures and tensile behaviors of high-titanium maraging stainless steel under different ageing treatments were studied by means of metallurgical microscope, scanning electron microscope, transmission electron microscope and tensile testing machine. Microstructures observations shows high...
2300 MPa grade vanadium-containing low alloyed steel: ultrafine microstructure preparation and performance
LONG Wei, KUANG Zhenyue, LI Guoyang, WU Guilin, CHEN Wenxiong, JIANG Qi
2025, 46(3): 187-194. doi: 10.7513/j.issn.1004-7638.2025.03.026
Abstract(10) HTML (7) PDF(5)
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For a conventional low alloyed steel, two different initial microstructures were achieved by conventional hot rolling and high-temperature annealing followed by cold rolling. The effects of the initial microstructures on the microstructure and mechanical properties after austenitization and quenchin...
Investigation on fatigue crack growth behavior of mixed mode Ⅰ-Ⅱ crack in 4130X steel
CHAO Long, QIN Chen, CHEN Fan, CAO Wenhong, HUANG Guoming, XIA Ming, ZHOU Changyu, HE Xiaohua
2025, 46(3): 195-204. doi: 10.7513/j.issn.1004-7638.2025.03.027
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To investigate the behavior of mixed mode I-II fatigue crack growth in 4130X steel, Compact Tension Shear (CTS) specimens were used to conduct experimental methods and Finite Element Method (FEM) at diverse load ratios and loading angles. The results indicate that the fatigue crack growth path is no...