钢铁钒钛

Progress of laser additive manufactured high-performance metal structural materials

Wang Huaming, Wang Yudai

2024, 45(6): 1-6. doi: 10.7513/j.issn.1004-7638.2024.06.001

Abstract(401) HTML (54) PDF(66)

Abstract:
Laser additive manufacturing technology on high-performance metallic components has shown great potential and broad application prospects in the manufacturing of key equipment. Beihang University has conducted deep research on laser additive manufactured large metallic components and achieved many r...

Current development status of hydrogen reduction technology with the CH₄-H₂ system

Zhang Run, Tan Chaowen, Dang Jie

2024, 45(6): 7-18. doi: 10.7513/j.issn.1004-7638.2024.06.002

Abstract(91) HTML (37) PDF(10)

Abstract:
Under the dual challenges posed by the “dual carbon” goals and “double high” restrictions, the field of pyrometallurgy is experiencing significant pressures related to energy consumption and carbon emissions, thereby heightening the urgent need for clean energy. Hydrogen energy, as a renewable clean...

Preparation of lithium manganese iron phosphate cathode material from vanadium tailings

Li Zhiyu, Tang Ting, Wang Zhenghao, Chen Liang, Zhu Yingming, Wu Kejing, Luo Dongmei

2024, 45(6): 19-27. doi: 10.7513/j.issn.1004-7638.2024.06.003

Abstract(283) HTML (29) PDF(36)

Abstract:
Using the iron-manganese-rich leaching solution generated during vanadium extraction from vanadium slag was used as the raw material, and ferromanganese oxalate dihydrate Mn_0.5Fe_0.5C₂O₄∙2H₂O was prepared by co-precipitation, and lithium ferromanganese iron phosphate LiFe_0.5Mn_0.5PO₄ anode material wa...

Research on activator enhanced acid leaching process of titanium concentrate

Wang Haibo, Long Tao, Xiang Long, Li Li, Tian Congxue

2024, 45(6): 28-33. doi: 10.7513/j.issn.1004-7638.2024.06.004

Abstract(102) HTML (32) PDF(10)

Abstract:
In response to the problem of high reaction acid concentration in the production of titanium dioxide by sulfuric acid method, which leads to the inability to achieve sulfuric acid equilibrium, an activator is introduced to enhance the acid hydrolysis reaction process and reduce the reaction acid con...

Preparation of titanium by hydrogenation and analysis of its energy

Lai Qi, Peng Fuchang, Chen Yingzhi, Zhang Jing, Zhao Xiguang, Chen Jinliang, Wu Yi, Dong Yingjie

2024, 45(6): 34-38. doi: 10.7513/j.issn.1004-7638.2024.06.005

Abstract(87) HTML (40) PDF(9)

Abstract:
Titanium hydride was prepared from sponge titanium at different temperatures and time. Perform structural analysis using X-ray diffraction (XRD) and morphology analysis using scanning electron microscopy (SEM). The results show that with the increase of reaction temperature, the mass growth rate of ...

Research progress of targeted extraction of vanadium by functional ionic liquids

Xiang Xinyue, Ye Guohua, Xiang Pengzhi, Rong Yiyang, Zhang Yun, Song Changxu

2024, 45(6): 39-49. doi: 10.7513/j.issn.1004-7638.2024.06.006

Abstract(118) HTML (31) PDF(14)

Abstract:
The solvent extraction method is the most commonly used technique for the separation and enrichment of vanadium. However, traditional industrial vanadium extraction methods encounter issues such as unsatisfactory extraction efficiency, poor selectivity, and environmental and safety concerns. Ionic l...

Research progress and prospect of comprehensive utilization technology of vanadium extraction tailings from vanadium-titanium magnetite

Wang Xinyu, Zhao Haiquan, Qi Yuanhong, Wang Feng

2024, 45(6): 50-58. doi: 10.7513/j.issn.1004-7638.2024.06.007

Abstract(177) HTML (36) PDF(38)

Abstract:
Vanadium extraction tailings of vanadium-titanium magnetite, as a by-product of vanadium extraction from converter vanadium slag, have great recovery value because of containing many valuable elements. However, due to the lack of effective utilization technology, they are currently being landfilled ...

Analysis of factors influencing the sedimentation height of hydrolyzed metatitanic acid

Wu Jianchun

2024, 45(6): 59-63, 150. doi: 10.7513/j.issn.1004-7638.2024.06.008

Abstract(90) HTML (38) PDF(8)

Abstract:
Based on the production data of a certain titanium dioxide factory, the influence of the sedimentation height of metatitanic acid on its particle size distribution and titanium dioxide pigment properties was statistically analyzed. The results show that with the increase of sedimentation height, the...

Crystal plasticity finite element study of tensile behavior of two-phase titanium alloy Ti-6Al-4V

Zhang Long, Chang Le, Lin Hongyun, Zhou Changyu

2024, 45(6): 64-73. doi: 10.7513/j.issn.1004-7638.2024.06.009

Abstract(284) HTML (56) PDF(30)

Abstract:
The influence of α/β volume fraction and grain size on the tensile mechanical properties of Ti-6Al-4V dual-phase titanium alloy was investigated in this study using the crystal plasticity finite element method. The contribution of different slip systems to plastic deformation was evaluated quantitat...

Microstructure and properties of inertia friction welding joint of TA18 titanium alloy tube

Cheng Peixin, Xi Jinhui, Liu Jiao, Shi Lichao, Zhang Jianjian

2024, 45(6): 74-79. doi: 10.7513/j.issn.1004-7638.2024.06.010

Abstract(79) HTML (31) PDF(12)

Abstract:
Inertial rotary friction welding (IRFW) research was conducted on TA18 titanium alloy tube. The microstructure of the IRFW joint of TA18 titanium alloy tube was observed using optical microscopy and scanning electron microscopy, and the characteristics and evolution mechanism of the microstructure w...

Preparation and properties of V_1-xTb_xO₂(x=0,1,2,3,4)(M) thin films

Du Jinjing, Liu Jingtian, Zhu Jun, Lin Haiyang, Zhai Ruitong, Zuo Heng, Ma Jiayi, Wang Dongbo

2024, 45(6): 80-86. doi: 10.7513/j.issn.1004-7638.2024.06.011

Abstract(77) HTML (36) PDF(8)

Abstract:
This article mainly investigated the effects of heavy rare earth terbium element (Tb) doping on the phase structure, microstructure, phase transition temperature, optical, and mechanical properties of vanadium dioxide thin films V_1-xTb_xO₂(x=0,1,2,3,4)(M). The analysis results show that the diffracti...

Effect of V content on microstructure and properties of laser cladding Fe-Cr alloy coatings

Zhang Xuefeng, Qing Guangyang, Zhou Haoran, Weng Liu, Chen Min, Zhao Haiquan, Wu Botao, Zhang Xin

2024, 45(6): 87-93. doi: 10.7513/j.issn.1004-7638.2024.06.012

Abstract(97) HTML (39) PDF(8)

Abstract:
Iron-chromium alloy coatings with varying V content were fabricated using laser cladding. The microstructural and performance variations of the laser-cladded iron-chromium alloy coatings with different V contents were investigated using metallographic observation, SEM & EDS, and X-ray diffractio...

Microstructure and friction and wear properties of titanium modified layer of preset TiCuZnSn by FSP

Dang Jie, Li Jie, Zhou Peng, Shi Hongyuan, Hui Yuanyuan

2024, 45(6): 94-99. doi: 10.7513/j.issn.1004-7638.2024.06.013

Abstract(69) HTML (29) PDF(7)

Abstract:
In order to obtain the biomedical titanium metal with good surface comprehensive properties, the equimolar Ti, Cu, Zn and Sn metal powders were preset on the surface of TA2 pure titanium, and the surface of pure titanium was modified by friction stir processing (FSP). The microstructure of the modif...

Research on preparation and OER properties of vanadium doped cobalt iron layered double hydroxide

Zeng Zehua, Zhang Dongbin, Yin Xianglu, Dai Yu, Yong Lingling, Xin Yanan, Teng Aijun

2024, 45(6): 100-107. doi: 10.7513/j.issn.1004-7638.2024.06.014

Abstract(91) HTML (34) PDF(8)

Abstract:
Exploiting environmentally friendly and relatively low-toxicity oxygen evolution reaction (OER) electrocatalysts is currently one of the biggest difficulties in water splitting. In this work, cobalt iron layered double hydroxide (CoFe LDH) and vanadium-doped cobalt iron layered double hydroxide (V-C...

Study on the effects of oxygen enrichment modes on the tuyere raceway states of blast furnace

Zheng Kui, Zhao Peng, Hu Peng, Huang Yun, Zhang Jianliang, Xu Runsheng

2024, 45(6): 108-118. doi: 10.7513/j.issn.1004-7638.2024.06.015

Abstract(243) HTML (77) PDF(19)

Abstract:
In this paper, based on the actual dimension of the vanadium titanomagnetite blast furnace of a domestic enterprise, a three-dimensional physical model is established. The numerical simulation method is used to compare and study the flow and combustion behavior of pulverized coal in the tuyere gyrat...

Study on the behavior of unburnt pulverized coal and reduction productions of TiO₂ in high-titanium blast furnace slag

Xie Hong’en, Zheng Kui, Hu Peng, Tang Wenbo, Ling Xinke

2024, 45(6): 119-126. doi: 10.7513/j.issn.1004-7638.2024.06.016

Abstract(93) HTML (37) PDF(10)

Abstract:
In this study, the viscosity of high-titanium blast furnace slags uniformly mixed with unburnt pulverized coal (UPC) was measured by using the method of rotating cylinder firstly. Then the distribution and behavior of the residual UPC and the reduction products were analyzed according to the macro m...

Study on the diffusion behavior of carbon during solid-state decarbonization process

Zhu Guangpeng, Ai Liqun, Hong Lukuo, Meng Fanjun, Wen Li, Sun Caijiao

2024, 45(6): 127-132. doi: 10.7513/j.issn.1004-7638.2024.06.017

Abstract(89) HTML (37) PDF(7)

Abstract:
In order to study the decarburization effect of Fe-C-Mn alloy strips during solid-state decarburization and the diffusion effect of Mn content on C atoms, the solid-state decarburization test was carried out with Fe-2.7%C-(5%, 12%) Mn alloy composition and 1 mm thickness strips. The molecular dynami...

Physical-numerical simulation and application of optimization of flow control device in a single-stand slab tundish

Huang Lei, Xie Xuqi, Zhang Hua, Li Yuxiang, Huang Zaijing, Huang Kejie, Fang Qing

2024, 45(6): 133-141. doi: 10.7513/j.issn.1004-7638.2024.06.018

Abstract(82) HTML (37) PDF(10)

Abstract:
The reasonable structure and layout of flow control devices are crucial for improving the cleanliness of molten steel within the tundish in the continuous casting process. A combined approach using numerical simulation and physical modeling was employed to analyze the steel flow behavior, residence ...

Review on the flow pattern of molten steel in the submerged entry nozzle and the mold of continuous casting slabs

Tian Yushi, Qiu Shengtao, Zhu Rong, Xu Lijun, Shi Pengzhao, Wang Xu

2024, 45(6): 142-150. doi: 10.7513/j.issn.1004-7638.2024.06.019

Abstract(92) HTML (31) PDF(14)

Abstract:
Through a systematic analysis of the current researches on flow patterns in the nozzle and mold, this study explores the transformation laws, common characteristics, influencing factors, and their effects on slab quality under various operating conditions, with a particular focus on the asymmetry of...

Modification of inclusions in Ni-Al maraging steels by rare earths

Tian Fangcheng, Gao Xueyun, Cao Yue, Xing Lei, Hua Liangeng, Wang Haiyan

2024, 45(6): 151-158. doi: 10.7513/j.issn.1004-7638.2024.06.020

Abstract(88) HTML (36) PDF(10)

Abstract:
Non-metallic inclusions in steel have an important influence on the ductility and toughness of ultra-high strength steels. In this paper, rare earth La and Ce elements were added to Fe-Ni-Al system martensitic aging steel, and the metamorphic mechanism of non-metallic inclusions in steel with differ...

Study on the inclusion distribution behavior of U71Mn heavy rail steel after rolling

Song Guangjie, Wang Yi, He Jianzhong, Zhang Daxian, Fu Jianxun

2024, 45(6): 159-166. doi: 10.7513/j.issn.1004-7638.2024.06.021

Abstract(87) HTML (27) PDF(14)

Abstract:
The morphology and distribution of non-metallic inclusions significantly affect the performance of heavy rail steels. This study employed optical microscopy, scanning electron microscopy, a three-dimensional etching instrument for inclusions, and Thermo-calc software to investigate the inclusions in...

Effect of annealing process on microstructure and properties of 2Cr12Ni4Mo3VNbN blade steel

Cao Chenxing, Xin Ruishan, Yu Zhanyang, Li Xiaokai, He Yudong, Yao Bin, Wang Liwei, He Yi

2024, 45(6): 167-171. doi: 10.7513/j.issn.1004-7638.2024.06.022

Abstract(102) HTML (41) PDF(11)

Abstract:
In order to solve the problem of high annealing hardness of 2Cr12Ni4Mo3VNbN industrial bar, the effects of different annealing processes on the microstructure and hardness of 2Cr12Ni4Mo3VNbN blade steel were systematically studied. The results show that compared with two-phase zone heating annealing...

Effect of tempering temperature on the mechanical properties and microstructures of 1500 MPa hot stamping steel after quenching

Wang Zijian, Huang Wei, Peng Ze, Liang Xiao, Deng Jianlin

2024, 45(6): 172-176. doi: 10.7513/j.issn.1004-7638.2024.06.023

Abstract(109) HTML (41) PDF(15)

Abstract:
Quenching and tempering treatment were carried out on a 1 500 MPa hot formed steel, and the effects of tempering temperature on the microstructures and mechanical properties were studied using methods such as metallographic microscopy, room temperature tensile testing, and scanning electron microsco...

Microstructure, mechanical properties and corrosion resistance of the Ni-based alloy NS1402 TIG welded joints

Zhou Guangtao, Cui Lilin, Zheng Huaibei, Zhang Hongtao

2024, 45(6): 177-183. doi: 10.7513/j.issn.1004-7638.2024.06.024

Abstract(97) HTML (40) PDF(10)

Abstract:
The weldability of domestic nickel-based alloy NS1402 by TIG welding with nickel-based wire ERNiFeCr-1 as the filler material was studied. The microstructures and mechanical properties of the joints were analyzed compared with the foreign Incoloy825 alloy. At the same time, the effect of common low ...

Research on the characteristics of cold-rolled deformation zone of thin strip and the applicability of contact pressure model

Huang Ziteng, Li Wei, Luo Xu, Li Junhong, Yu Hui

2024, 45(6): 184-193. doi: 10.7513/j.issn.1004-7638.2024.06.025

Abstract(91) HTML (50) PDF(9)

Abstract:
In the process of cold rolling of thin strip, the roll will produce different degrees of elastic flattening, and the different understandings of this phenomenon in each deformation in each deformation zone theory lead to significant difference in its calculation accuracy and application range. There...

Thermodynamic calculation of sulfide and nitride precipitation in high grade non-oriented silicon steel

Feng Guohui, Cheng Chuanliang, Wang Xu, Qiao Jialong, Shi Pengzhao, Guo Feihu, Liu Lei, Qiu Shengtao

2024, 45(6): 194-200. doi: 10.7513/j.issn.1004-7638.2024.06.026

Abstract(81) HTML (32) PDF(11)

Abstract:
The equilibrium concentration relationship of precipitates was obtained by thermodynamic calculation of sulfide and nitride of the high grade non-oriented electrical steel 50W350. Below the liquidus temperature, AlN precipitates in the range of 1 700-1 788 K, TiN in the range of 1 588-1 788 K, MnS i...

2024 Vol. 45, No. 6