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Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Research progress of vacuum low-pressure carburizing technology and equipment development Jiang Chao, Cong Peiwu, Lu Wenlin, Yao Jiawei, Ma Jingbo, Liu Guihua, Du Chunhui Heat Treatment of Metals    2024, 49 (12): 111-121.   doi:10.13251/j.issn.0254-6051.2024.12.020 Abstract （49）      PDF （3301KB）（43）       Knowledge map    Current research status of vacuum low-pressure carburizing technology was systematically discussed. The development trend of vacuum low-pressure carburizing technology was analyzed from the prospectives of process, theory, equipment and application, which provides ideas for breaking the bottleneck of single strengthening performance technology and promoting the application of vacuum low-pressure carburizing technology in new materials and fields. At the same time, the development of vacuum low-pressure carburizing equipment at home and abroad was compared, providing reference and inspiration for equipment manufacturing enterprises. Reference | Related Articles | Metrics Select Research progress on mechanical properties and oxidation resistance of CrAlN-based coatings He Tao, Cao Hongshuai, Li Beibei, Qi Fugang, Zhao Nie, Liao Bin, Ouyang Xiaoping Heat Treatment of Metals    2024, 49 (9): 297-307.   doi:10.13251/j.issn.0254-6051.2024.09.050 Abstract （109）      PDF （4170KB）（65）       Knowledge map    CrAlN coatings are extensively applied in the protection of the cutting tools and molds due to their higher hardness and abrasive resistance. Firstly, the structure of CrAlN coatings and its effect on the mechanical properties and thermal decomposition mechanism of the coatings is introduced in the present review, and then pointing out that the Al content and its existence mode are important factors affecting the structure and properties of CrAlN crystals. Secondly, research status of CrAlN-based multicomponent coating and multilayer coating about the mechanical properties and high temperature oxidation resistance properties is reviewed. Focused on the doping modification of elements and the designing of multilayer coating structure, the advantages and disadvantages of various modification methods are compared and analyzed, then the doping of Si, Y, V and their influence to the performance of coating are summarized, and pointing out that constructing nanoscale multilayer coating can significantly improve the performance. Finally, the high-temperature oxidation behavior and high-temperature failure mechanism of CrAlN-based coatings are discussed, providing a reference for the performance optimization of CrAlN-based hard coatings. Reference | Related Articles | Metrics Select Research progress on influence of electromagnetic field on microstructure and properties of aluminum alloys Zhong Zhendong, Fan Jintao, Wang Fusheng, Chen Yajun Heat Treatment of Metals    2024, 49 (6): 261-269.   doi:10.13251/j.issn.0254-6051.2024.06.041 Abstract （39）      PDF （2239KB）（41）       Knowledge map    Electromagnetic field treatment process of aluminum alloys was summarized, and the influence of electromagnetic field treatment process on microstructure and properties of aluminum alloys was analyzed from three levels: microstructure, macroscopic properties, and action mechanism. The factors influencing the selection of electromagnetic field treatment process parameters on aluminum alloys is summarized, and the mechanism of optimizing the microstructure and properties of aluminum alloys by electromagnetic field is revealed. Finally, the focus and direction of future research on electromagnetic field treatment process are discussed. Reference | Related Articles | Metrics Select Research progress on on-line heat treatment technology for U75V steel rail with 100-meter length Zhanghui Zeying, Gao Mingxin, Song Hua, Wang Yang, Yang Jian Heat Treatment of Metals    2024, 49 (6): 270-276.   doi:10.13251/j.issn.0254-6051.2024.06.042 Abstract （46）      PDF （1439KB）（45）       Knowledge map    Methods, characteristics and research progress of on-line heat treatment process for U75V steel rail with 100-meter length were summarized. Effects of heat treatment cooling process parameters and spray cooling process parameters on the production efficiency, microstructure and mechanical properties of the heat treated U75V steel rail with 100-meter length were introduced. Suggestions for future research on the heat treatment process of pearlite rail with 100-meter length were proposed. It is meaningful to study the effect of cooling process parameters on the microstructure and mechanical properties of the steel rails, with the goal of shortening the required heat treatment cooling time, and optimize them. Reducing the allowable fluctuation range of alloy composition content is beneficial for improving the properties of the U75V steel rail in combination with the optimization of heat treatment process. A nozzle or air spraying process that combines heat transfer capability and uniformity is beneficial for optimizing the heat treatment process of the steel rails and improving their properties. Reference | Related Articles | Metrics Select Research progress on composition and microstructure of marine engineering steel and production process of H-beam steel Yao Huiqin, Wang Jingzhong, Zhao Peilin, Li Chao, Yang Xirong, Liu Xiaoyan, Luo Lei Heat Treatment of Metals    2024, 49 (3): 293-301.   doi:10.13251/j.issn.0254-6051.2024.03.048 Abstract （33）      PDF （3213KB）（39）       Knowledge map    With the implementation of China's marine development strategy, the demand and development of marine engineering steel will become a new growth point in the domestic steel industry. The composition design, microstructure design, and production process research of marine engineering steel have become hot areas of focus for scholars. Due to significant differences in cross-section, there are certain differences in the arrangement of processing technology between steel plates and H-beams used in marine engineering. This paper summarizes the current research status and progress of marine engineering steel, introduces its composition design characteristics of marine engineering steel and alloying mechanism, analyzes the microstructure design characteristics of different intensity levels, and expounds the production process characteristics of marine engineering steel plates and H-beams from three aspects: heating temperature, rolling and cooling process. It also summarizes and prospects the research focus of marine engineering steel production technology. Reference | Related Articles | Metrics Select Research application status and prospect of 7××× series ultra-high strength aluminum alloy in rail transit vehicles in China Wen Chao, Zhu Zhengfeng, Wang Qun, Chen Songyi, Chen Kanghua Heat Treatment of Metals    2024, 49 (3): 302-312.   doi:10.13251/j.issn.0254-6051.2024.03.049 Abstract （90）      PDF （2110KB）（48）       Knowledge map    7××× series ultra-high strength aluminum alloys with high specific strength, good toughness and corrosion resistance have important application potential and development prospect in bogie components of rail vehicles to meet the major application requirements of green, safe, efficient and intelligent in the manufacturing of new generation rail vehicles. The development trend of the 7××× series ultra-high-strength aluminum alloys is reviewed. In view of the new manufacturing and service requirements of the 7××× series ultra-high-strength aluminum alloys for rail vehicles, the performance characteristics and research status of two typical 7××× series ultra-high strength aluminum alloys (7050 and 7085 alloy) have been introduced and compared. The problems that need to be studied and solved in the application and service of the 7××× series series ultra-high strength aluminum alloy with high efficiency, safety and long life under complex conditions are also prospected. It is expected to provide a guideline for the design, material selection, manufacture and application of bogie components of new generation rail transit vehicles. Reference | Related Articles | Metrics Select Factors influencing precipitation strengthening behavior of aluminum-lithium alloys and their research progress Zhang Liwen, Liu Qiang, Lei Chao, Shen Xuehong Heat Treatment of Metals    2024, 49 (3): 313-319.   doi:10.13251/j.issn.0254-6051.2024.03.050 Abstract （48）      PDF （3176KB）（28）       Knowledge map    Heat-treatable aluminum alloys can obtain higher mechanical properties through aging strengthening, but the aging strengthening behavior of the alloys is affected by many factors. The effects of temperature, pre-deformation, thermomechanical treatment, applied stress and applied electric field on alloy precipitation kinetics and strengthening behavior are summarized. Through reviewing and analyzing the influencing factors, it is hoped to provide the theoretical basis for the design and preparation of high-strength aluminum-lithium alloys. Reference | Related Articles | Metrics Select Research progress on change of microstructure of 7000 series aluminum alloy during solution treatment and aging Qi Qingwen, Bu Hengyong, Li Qin Heat Treatment of Metals    2024, 49 (2): 244-251.   doi:10.13251/j.issn.0254-6051.2024.02.039 Abstract （40）      PDF （3238KB）（27）       Knowledge map    7000 series aluminum alloys are widely used in industrial areas such as aerospace and transportation due to the low density, high strength and good processing performance. As a high-strength heat treatable aluminum alloy, solution treatment and aging are important steps in heat processing, the microstructural changes caused by heat treatment have a significant impact on the properties of alloys. The research status of change of microstructure of 7000 series aluminum alloy during solution treatment and aging in recent years was reviewed. The heat treatment purpose, the influencing factors of heat treatment and the microstructure evolution, as well as the influence of typical precipitation on properties of aluminum alloys were described. Finally, prospects were made for the research directions related to the microstructure of 7000 series aluminum alloys. Reference | Related Articles | Metrics Select Research progress of effects of rare earth on microstructure and corrosion resistance of composite coatings Xu Ke, Yang Guirong, Song Wenming, Ma Ying Heat Treatment of Metals    2024, 49 (2): 252-258.   doi:10.13251/j.issn.0254-6051.2024.02.040 Abstract （38）      PDF （1512KB）（30）       Knowledge map    With the development of research about the surface phenomena such as adhesion and adsorption, the new kinds of composite coatings are developed rapidly and gradually replacing traditional materials. The aim of various surface engineering techniques is to manufacture composite coatings with excellent corrosion resistance, high wear resistance and high temperature resistance. At present, there are still defects such as high internal porosity, low bond strength and low fracture toughness for the composite coating fabricated through various surface preparation techniques. Numerous studies show that the rare earth elements and their oxides have an important effect on improving the structure and properties of coatings. The effects of rare earth or its oxide additives on coatings are discussed, and an overview of the effects on refinement of coating microstructure is focused on, as well as the improvement of corrosion properties, and the mechanism of rare earth effects are illustrated in detail. On this basis, the future research prospects of rare earth modified coatings are also discussed. Reference | Related Articles | Metrics Select Advances on surface treatment process of tantalum Wang Zhehao Heat Treatment of Metals    2024, 49 (2): 259-264.   doi:10.13251/j.issn.0254-6051.2024.02.041 Abstract （76）      PDF （1461KB）（40）       Knowledge map    Research advances and application examples of surface treatment technologies such as infiltration layer, micro-arc oxidation, chemical vapor deposition, and thermal spraying to improve the comprehensive properties of tantalum metal, reduce the failure behavior of tantalum materials, and enhance the service life of tantalum equipment were summarized. Finally, the development direction of surface reinforcement treatment for tantalum materials was discussed. Reference | Related Articles | Metrics Select Current status and prospect of induction cladding technology Wang Hao, Xi Yanjun, Ma Mingxing, Guan Xiaoyan, Zhang Ruijie, Liu Ying Heat Treatment of Metals    2024, 49 (2): 265-273.   doi:10.13251/j.issn.0254-6051.2024.02.042 Abstract （82）      PDF （1906KB）（27）       Knowledge map    With the rapid development of industrial production, the traditional surface modification technology can no longer meet the needs of the industry, and there are obvious shortcomings, so the coatings with excellent wear resistance, corrosion resistance and high temperature oxidation resistance become research hotspot. Modern cladding technology, with its characteristics of stability, high efficiency and easy automation, has made achievements in the field of surface modification technology and has been widely used in industry. The development history of induction cladding technology is primarily reviewed, the aspects such as process parameters, multi-heat source composite cladding technology, and auxiliary techniques are summarized. The research on the simulation of the energy field in induction cladding is introduced, the reasons for the formation of defects in induction cladding technology are systematically analyzed, and the problems existing in both the technical processes and simulation research of induction cladding are identified. Based on the principles of induction cladding, the auxiliary techniques are focused on, and the shortcomings and solutions of various research directions in current induction cladding technology are proposed. Finally, in view of the needs for high performance integrated coating materials in stable service under extreme environment, the development of coating technology represented by composite technology for induction cladding is prospected. Reference | Related Articles | Metrics Select Research progress on heat treatment of β titanium alloy Xiao Hao, Sun Yang, Fan Juanjuan, Wei Haitao, Yi Junying, Yao Liu Heat Treatment of Metals    2023, 48 (11): 258-265.   doi:10.13251/j.issn.0254-6051.2023.11.043 Abstract （77）      PDF （3348KB）（49）       Knowledge map    β titanium alloy is widely used in the fields of high performance and advanced engineering such as aerospace, marine, military and biomedical, but the current process application puts forward higher requirements for its properties. β titanium alloy can be strengthened by heat treatment. The heat treatment process of β titanium alloy in recent years was reviewed. Firstly, the main phase composition and phase transformation of β titanium alloy were systematically overviewed. Then, the effects of typical heat treatment process, plastic deformation mechanism and newly developed pre-deformation aging process on microstructure evolution and properties were described and analyzed. Finally, the development trend of heat treatment process of β titanium alloy was prospected. Reference | Related Articles | Metrics Select Research status of pearlitic steel and dual phase steel for commercial vehicle wheel Zhou Linjun, Li Linze, Tian Yaqiang, Dai Xin, Chen Liansheng Heat Treatment of Metals    2023, 48 (8): 209-218.   doi:10.13251/j.issn.0254-6051.2023.08.035 Abstract （42）      PDF （2065KB）（56）       Knowledge map    Pearlitic steel and dual phase steel are widely used in automobile wheel. Pearlitic steel has good toughness but insufficient strength, while dual phase steel has high strength but insufficient toughness. The research status of pearlite steel and dual phase steel for commercial vehicle wheels were systematically summarized. The effect of alloy elements on mechanical properties was introduced. In addition, the influence mechanism of rolling process, heat treatment process and welding process on the performance of wheel steel were also revealed. Finally, the future research directions of pearlite steel and dual phase steel are predicted, so as to provide reference for the development and safe service of commercial vehicle wheel steel in the future. Reference | Related Articles | Metrics Select Research status of bainitic non-quenched and tempered cold heading steels for grade 10.9 fasteners Huang Zhiguo, Cao Yongzheng, Li Yanyan, Jiang Bo Heat Treatment of Metals    2023, 48 (8): 219-224.   doi:10.13251/j.issn.0254-6051.2023.08.036 Abstract （73）      PDF （1978KB）（61）       Knowledge map    Research status of non-quenched and tempered cold heading steels for fasteners in China was summarized. The strengthening and toughening mechanisms were discussed from the aspects such as grain refinement and dislocation strengthening. In addition, the key to control the microstructure and performance of cold heading steel rolled materials and deep processing fasteners was clarified. Finally, the development trend and research focus of non-quenched and tempered cold heading steels were summarized, aiming to provide a theoretical basis for the development and production of 10.9 grade high-strength non-quenched and tempered cold heading steels. Reference | Related Articles | Metrics Select Effect of stacking fault energy on deformation mechanism in face centered cubic high-entropy alloy Zhang Bo, Li Jie, Wu Kaidi, Niu Lichong, Wan Decheng, Feng Yunli Heat Treatment of Metals    2023, 48 (8): 225-234.   doi:10.13251/j.issn.0254-6051.2023.08.037 Abstract （180）      PDF （4336KB）（150）       Knowledge map    Properties of high-entropy alloys can be tuned by changing the types and ratios of alloying elements, which affect the stacking fault energy and phase stability of the alloy system, then the plastic deformation mechanism of the alloy can be changed, thus the optimal comprehensive mechanical properties can be obtained. The factors that affect the stacking fault energy of face centered cubic high-entropy alloys, and the influence of stacking fault energy on deformation mechanism, are reviewed. And the methods that can affect the mechanical properties by changing the activation order of deformation mechanisms by adjusting the stacking fault energy are prospected. Reference | Related Articles | Metrics Select Research progress on preparation technology and coating of nano-powder by plasma spraying Chen Baisen, Meng Junsheng, Wang You, Shi Xiaoping Heat Treatment of Metals    2023, 48 (7): 223-236.   doi:10.13251/j.issn.0254-6051.2023.07.039 Abstract （60）      PDF （3299KB）（151）       Knowledge map    In modern industry, plasma spraying technology has become an important method to improve the wear resistance and corrosion resistance of the surface of mechanical parts. As a spraying material, the nano-powder can effectively improve the wear resistance, corrosion resistance, oxidation resistance and other aspects of plasma spraying coating, which has research value in the application of surface protection of parts and components. It is of great significance for the energy conservation and environmental protection, and has become a research hot spot in the field of surface modification at home and abroad. Based on this, on the basis of a large number of literature, the preparation method of nano powder from three aspects as solid phase method, liquid phase method and gas phase method is introduced, research on the regranulation technology of nano-powder at home and abroad is summarized, the preparation methods of nano-powder feed, including spray drying, mechanical grinding and liquid phase precursor synthesis are described, and the preparation method of liquid phase precursor synthesis method is focused on. From the selection of nano-powder for plasma spraying to the preparation of coating, the application results of nano-coating in wear resistance, corrosion resistance, thermal barrier and self-lubrication are reviewed in detail, furthermore, the influence of plasma spraying parameters (spraying power, spraying distance, moving speed of spray gun, spraying gas parameters) on quality of the nano-coating is inductively analyzed. Finally, the problems and shortcomings in the preparation of plasma sprayed nano-powder feed are discussed, and the future research direction of plasma sprayed nano-coating is prospected. Reference | Related Articles | Metrics Select Research progress on laser surface melting treatment of magnesium alloys Zhang Xi, Wen Jinhao, Wu Bingbing, Xie Fang, Ma Xinbo, Kong Fanxiao Heat Treatment of Metals    2023, 48 (7): 237-244.   doi:10.13251/j.issn.0254-6051.2023.07.040 Abstract （42）      PDF （3858KB）（95）       Knowledge map    Magnesium alloys are excellent lightweight material and potential implant material for human body. However, they are active and have poor corrosion resistance. The laser surface melting (LSM) technology can quickly form a melting layer with fine grains on the surface of magnesium alloy and change the surface microstructure and composition, and has an important influence on improving the corrosion resistance and biocompatibility. The recent studies on laser surface melting of the magnesium alloys are reviewed. The effect of laser surface melting on microstructure, composition, wettability, corrosion resistance and biocompatibility of the magnesium alloys is analyzed. The development directions of laser melting treatment on microstructure transformation, corrosion mechanism and mechanical behavior, degradation behavior and biocompatibility of the magnesium alloys are summarized and prospected. Reference | Related Articles | Metrics Select Research progress of Q&P steel for automobiles Gao Xueran, Chen Xiaohu, Yuan Siyu, Wang Xu Heat Treatment of Metals    2023, 48 (7): 245-253.   doi:10.13251/j.issn.0254-6051.2023.07.041 Abstract （69）      PDF （3984KB）（31）       Knowledge map    Current research status of Q&P steel was introduced through four aspects: the production process of Q&P steel, the role of alloying elements, the thermodynamics and dynamics of C composition and the influence of process parameters, and the future research direction of Q&P steel was prospected. The microstructure of Q&P steel after quenching and partitioning process is martensite and retained austenite, the martensite provides high strength and the retained austenite produces a TRIP effect to enhance the plastic deformation ability with effect of stress and strain. The heart of the Q&P process is to get the maximum availability of stable retained austenite, which depends critically on the partitioning process of C, and the optimal quenching temperature can be predicted by thermodynamic theoretical model calculations. The addition of alloying elements can inhibit the precipitation of carbides, refine austenite grains and stabilize austenite. The process parameters have a great influence on the microstructure and mechanical properties of the Q&P steel, the quenching temperature determines the content of initial martensite and the subsequent partitioning process, and the partitioning temperature and partitioning time significantly affect the diffusion power of C atoms, so it is particularly important to select the appropriate process parameters. Reference | Related Articles | Metrics Select “Thought” of metallic materials Yuan Zhizhong, Dai Qixun, Wang Andong, Ju Yulin, Cao Fuyang, Luo Rui Heat Treatment of Metals    2023, 48 (5): 1-5.   doi:10.13251/j.issn.0254-6051.2023.05.001 Abstract （141）      PDF （1390KB）（158）       Knowledge map    “Thought” of metallic materials is refined from the systematic and comprehensive perspectives. The contradictory law of the evolution process of metallic materials properties is revealed. The complexity of the role of alloy elements is summarized. The quantitative and qualitative change law of microstructure evolution of metallic materials is expounded, and the multidirectional variability of heat treatment processes is illustrated as well. Reference | Related Articles | Metrics Select Research progress on surface modification of zirconium alloys Liu Zhanghui, Hu Haiyang, Wang Jiangang, Zhu Xiaoye, Ma Jing, Li Jianhui, Yu Huichao, Feng Zhihao Heat Treatment of Metals    2022, 47 (12): 258-268.   doi:10.13251/j.issn.0254-6051.2022.12.043 Abstract （79）      PDF （643KB）（51）       Knowledge map    Taking the surface modification technology of zirconium alloy as the main line, the types and research status of current modification methods were briefly described, and the principle, research progress, advantages and disadvantages of common surface modification preparation technologies such as physical vapor deposition, laser surface treatment, anodic oxidation, microarc oxidation and ion implantation were emphatically introduced. The theoretical problems to be solved and the technical bottlenecks to be overcome of the surface modification of zirconium alloys were discussed. Finally, the future research work and engineering application prospect of zirconium alloy surface modification were prospected based on the related research progress. Reference | Related Articles | Metrics page Page 1 of 2 Total 33 records First page Prev page Next page Last page