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学者姓名:符寒光
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Abstract :
Hypereutectic High Chromium Cast Iron (HHCCI) is a new type of corrosion-wear-resistant material developed from ordinary high chromium cast iron by increasing the chromium and carbon content and is often used in abrasive environments where wear and corrosion interact. The corrosion wear resistance of the HHCCI is related to the number, size, shape and distribution of carbides and the microstructure of the matrix. This paper reviews the research progress in improving the corrosion wear resistance of HHCCI from various aspects such as primary carbide refinement, heat treatment, deep cooling treatment and alloying, etc. Among the methods of refining primary carbides are modification, semi-solid treatment and current pulse treatment. In addition, we also analyze the potential of Cr, V, Nb, Mo, Mn, W, Ni, Cu, Si, N and other alloying elements to improve the corrosion wear resistance of HHCCI. The mechanism for improving the corrosion wear resistance of HHCCI is also explored in depth and research contents worthy of attention are proposed to further improve the corrosion wear resistance of HHCCI. In the future, the author believes that modification + alloying + heat treatment is the most potential application method to improve the corrosion wear resistance of HHCCI. The corrosion wear resistance of HHCCI can be further improved by refining the primary carbide (such as adding rare earth, Ti and other modified elements) + heat treatment (with cryogenic treatment) to improve the strength + alloying (such as adding low-cost, high-potential alloy elements such as N and Si) to improve the corrosion wear resistance of the matrix.
Keyword :
heat treatment heat treatment alloying alloying carbide carbide corrosion wear resistance corrosion wear resistance hypereutectic high chromium cast iron hypereutectic high chromium cast iron
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GB/T 7714 | Gong, Liqiang , Fu, Hanguang , Zhi, Xiaohui . Corrosion Wear of Hypereutectic High Chromium Cast Iron: A Review [J]. | METALS , 2023 , 13 (2) . |
MLA | Gong, Liqiang 等. "Corrosion Wear of Hypereutectic High Chromium Cast Iron: A Review" . | METALS 13 . 2 (2023) . |
APA | Gong, Liqiang , Fu, Hanguang , Zhi, Xiaohui . Corrosion Wear of Hypereutectic High Chromium Cast Iron: A Review . | METALS , 2023 , 13 (2) . |
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Abstract :
In order to further improve the wear resistance of Hypereutectic High Chromium Cast iron (HHCCI), the effects of different Cu contents on the microstructure and properties of HHCCI were systematically studied. It was found that with the increase of Cu content, the carbide size was refined, and the increase of Cu content led to the increase of austenite and the decrease of hardness in as-cast HHCCI. After heat treatment at 1050 degrees C, the hardness of HHCCI increased significantly compared with as-cast. And with the increase of Cu content, the hardness of HHCCI increased first and then decreased, and the hardness was the highest when 0.5 wt% Cu was added. The increase of copper content promotes the precipitation of secondary carbides and makes the interface between alpha-Fe and M23C6-type secondary carbides a semi-coherent boundary. With the increase of Cu content, the wear loss of HHCCI decreased after heat treatment at 1050 degrees C, and the wear resistance improved. When the Cu content increased to 1.0 wt%, the wear resistance of HHCCI was the best, which was 2.6 times that of copper-free HHCCI. The continued increase of copper content has no obvious effect on the wear resistance of HHCCI. In addition, a small amount of Cu tends to adsorb on the (0001) preferential growth surface of M7C3-type carbides, thereby refining the carbides. From the First-principles calculations, the solid solution strengthening effect of Cu on the matrix and the adsorption and refinement of carbides were revealed, and the influence mechanism on the wear resistance of HHCCI was characterized.
Keyword :
Carbides Carbides Cu alloying Cu alloying First-principles calculations First-principles calculations Wear resistance Wear resistance Hypereutectic high chromium cast iron Hypereutectic high chromium cast iron
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GB/T 7714 | Gong, Liqiang , Fu, Hanguang , Zhi, Xiaohui . Microstructure and properties of Cu-bearing hypereutectic high chromium cast iron [J]. | MATERIALS CHARACTERIZATION , 2023 , 195 . |
MLA | Gong, Liqiang 等. "Microstructure and properties of Cu-bearing hypereutectic high chromium cast iron" . | MATERIALS CHARACTERIZATION 195 (2023) . |
APA | Gong, Liqiang , Fu, Hanguang , Zhi, Xiaohui . Microstructure and properties of Cu-bearing hypereutectic high chromium cast iron . | MATERIALS CHARACTERIZATION , 2023 , 195 . |
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Abstract :
In order to explore the effect of in-situ ceramic particles on the microstructure and properties of nickel-based composite coatings, the nickel-based coatings reinforced by the in-situ ceramic were prepared on the surface of 40CrNiMo steel using laser cladding technology. On the basis of NiCrBSi (Ni45) powder, 0 wt%, 5 wt%, 10 wt%, 15 wt%, and 20 wt% of B4C and ferrovanadium (FeV50) were added, which the atomic ratio of V to C was 1:1. Microstructure and phase analysis were carried out by metallographic microscope (OM), X-ray diffractometer (XRD), and scanning electron microscope (SEM). The results show that the NiCrBSi coating without B4C and FeV50 are mainly composed of ?-Ni, Cr23C6, Cr7C3, and CrB phases. After adding B4C and FeV50, the matrix is mainly composed of ?-Ni(Fe) solid solution, and strengthening phases such as CrB2 and VB2 appear in the coating. With the increase of the B4C and FeV50, the amount of CrB2 and VB2 increased, and the hardness and wear resistance were improved. When the addition amount of B4C and FeV50 is 10 wt%, the in-situ reinforced particles were uniformly distributed and the wear resistance of the coating was the best and was about 15 times that of Ni45 coating.
Keyword :
wear resistance wear resistance strengthening phase strengthening phase Ni-based composite coating Ni-based composite coating laser cladding laser cladding microstructure microstructure
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GB/T 7714 | Liu, Guixin , Fu, Hanguang . Microstructure and properties of laser cladding in-situ ceramic particles reinforced Ni-based coatings [J]. | MATERIALS TESTING , 2023 , 65 (6) : 855-866 . |
MLA | Liu, Guixin 等. "Microstructure and properties of laser cladding in-situ ceramic particles reinforced Ni-based coatings" . | MATERIALS TESTING 65 . 6 (2023) : 855-866 . |
APA | Liu, Guixin , Fu, Hanguang . Microstructure and properties of laser cladding in-situ ceramic particles reinforced Ni-based coatings . | MATERIALS TESTING , 2023 , 65 (6) , 855-866 . |
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Abstract :
In this paper, the effects of different quenching holding times on the microstructure and properties of high-silicon hypereutectic high-chromium cast iron (Fe-4.0C-35.0Cr-1.9Si) were investigated. The effect of quenching holding time on the microstructure of high silicon hypereutectic high chromium cast iron was analyzed by optical microscope, scanning electron microscope and X-ray diffractometer. The hardness and wear resistance of high-silicon hypereutectic high-chromium cast iron quenched at 1150 degrees C for different time were tested by Rockwell hardness tester, microhardness tester and wear tester. The results show that the microstructure of as-cast high-silicon hypereutectic high-chromium cast iron is mainly composed of pearlite matrix and M7C3 carbide. Quenching heat treatment makes part of the matrix transform from pearlite to martensite, and precipitate a small amount of M23C6 type secondary carbide. With the increase of quenching holding time from 1 h to 6 h, the amount of martensite transformation gradually increases, the primary carbide has no obvious change, the eutectic carbide tip dissolves, and the morphology gradually becomes smooth. The hardness and wear resistance both increase first and then decrease. After 4 hours of insulation, the hardness reaches the highest 60.5HRC, which is increased by 3 HRC compared to 1 hour of insulation. The wear resistance increases by 22.1% compared to 1 hour of insulation. At this time, the wear resistance is the best.
Keyword :
quenching holding time quenching holding time wear resistance wear resistance microstructure evolution microstructure evolution mechanical properties mechanical properties Hypereutectic high chromium cast iron Hypereutectic high chromium cast iron
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GB/T 7714 | Cheng, Xiaole , Zhang, Dong , Wu, Xiaojun et al. EFFECT OF QUENCHING HOLDING TIME ON MICROSTRUCTURE AND PROPERTIES OF HIGH SILICON HYPEREUTECTIC HIGH CHROMIUM CAST IRON [J]. | SURFACE REVIEW AND LETTERS , 2023 , 30 (09) . |
MLA | Cheng, Xiaole et al. "EFFECT OF QUENCHING HOLDING TIME ON MICROSTRUCTURE AND PROPERTIES OF HIGH SILICON HYPEREUTECTIC HIGH CHROMIUM CAST IRON" . | SURFACE REVIEW AND LETTERS 30 . 09 (2023) . |
APA | Cheng, Xiaole , Zhang, Dong , Wu, Xiaojun , Fu, Hanguang . EFFECT OF QUENCHING HOLDING TIME ON MICROSTRUCTURE AND PROPERTIES OF HIGH SILICON HYPEREUTECTIC HIGH CHROMIUM CAST IRON . | SURFACE REVIEW AND LETTERS , 2023 , 30 (09) . |
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Abstract :
AlSi10Mg alloy was prepared by laser powder bed fusion (LPBF). The evolution of microstructure and mechanical properties after diverse aging temperatures were systematically studied. The metastable ultra-fine cellular structure was obtained for as-built specimens. Aging at lower temperatures (100-225 degrees C) promotes the formation of a large number of Si-rich precipitates, and the original Si networks can be retained. With the increase in aging temperature, Si network gradually broke apart, and Si-rich particles grew and spheroidised. The hardness increases with temperatures up to 175 degrees C, and decreases thereafter, while the opposite trend was observed for elongation. Excellent comprehensive mechanical properties with a tensile strength of 381 MPa and elongation of 5.2% can be obtained at 225 degrees C for 2 h.
Keyword :
mechanical properties mechanical properties heat treatment heat treatment microstructure stability microstructure stability AlSi10Mg alloy AlSi10Mg alloy Additive manufacture Additive manufacture
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GB/T 7714 | Liang, Yaru , Ma, Tiejun , Jin, Tounan et al. Aging temperature effects on microstructure and mechanical properties for additively manufactured AlSi10Mg [J]. | MATERIALS SCIENCE AND TECHNOLOGY , 2023 , 39 (10) : 1223-1236 . |
MLA | Liang, Yaru et al. "Aging temperature effects on microstructure and mechanical properties for additively manufactured AlSi10Mg" . | MATERIALS SCIENCE AND TECHNOLOGY 39 . 10 (2023) : 1223-1236 . |
APA | Liang, Yaru , Ma, Tiejun , Jin, Tounan , Zhang, Bo , Yang, Le , Yin, Wenhang et al. Aging temperature effects on microstructure and mechanical properties for additively manufactured AlSi10Mg . | MATERIALS SCIENCE AND TECHNOLOGY , 2023 , 39 (10) , 1223-1236 . |
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Abstract :
高速钢是一种具有高硬度、高耐磨性、高耐热性和优良红硬性的工具钢,然而由于合金元素价格高,其使用范围受到很大限制。在高速钢生产中以廉价的硼替代钨、钼、钒、铌等贵重金属制得的高硼高速钢既降低了成本,又能保证优异的硬度、耐磨性、强韧性、抗高温氧化性。本文综述了合金化、变质处理和热处理对高硼高速钢组织和性能影响,最后对高硼高速钢未来的发展进行了展望。
Keyword :
合金化 合金化 变质处理 变质处理 高硼高速钢 高硼高速钢 热处理 热处理
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GB/T 7714 | 刘英鹏 , 袁乃博 , 符寒光 . 高硼高速钢研究进展 [J]. | 大型铸锻件 , 2023 , PageCount-页数: 7 (03) : 45-50,56 . |
MLA | 刘英鹏 et al. "高硼高速钢研究进展" . | 大型铸锻件 PageCount-页数: 7 . 03 (2023) : 45-50,56 . |
APA | 刘英鹏 , 袁乃博 , 符寒光 . 高硼高速钢研究进展 . | 大型铸锻件 , 2023 , PageCount-页数: 7 (03) , 45-50,56 . |
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Abstract :
耐磨材料凭借高硬度特点,已广泛应用于许多磨损领域。由于钛元素在地球含量丰富,且具有阻止晶粒长大、提高钢的耐磨性等作用,高钛耐磨钢有着良好的发展前景,是一种非常好的耐磨材料。本文总结了高钛耐磨钢中元素的种类和含量以及在凝固、变形、淬火及回火过程中的工艺参数对钢的显微组织和性能的影响,并对未来进行展望,期待为高钛耐磨钢的发展应用提供支持。
Keyword :
耐磨性 耐磨性 综合性能 综合性能 高钛耐磨钢 高钛耐磨钢 显微组织 显微组织
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GB/T 7714 | 王寒 , 阴文行 , 符寒光 . 高钛耐磨钢研究进展 [J]. | 铸造技术 , 2023 , 44 (04) : 313-321 . |
MLA | 王寒 et al. "高钛耐磨钢研究进展" . | 铸造技术 44 . 04 (2023) : 313-321 . |
APA | 王寒 , 阴文行 , 符寒光 . 高钛耐磨钢研究进展 . | 铸造技术 , 2023 , 44 (04) , 313-321 . |
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Abstract :
In situ NbC-reinforced laser cladding Ni45 coatings have the advantages of high bond strengths, low dilution rates, small heat-affected zones and good wear resistance and have broad application prospects in the field of surface strengthening and repair of workpieces such as automotive molds and engine turbines. Previous studies have mostly used pure niobium powder for in situ synthesis to prepare Ni-based NbC coatings with a high production cost. In this paper, NbC was successfully synthesized in situ in Ni45 powder using inexpensive FeNb65 and Cr3C2. The prepared coating has a uniform microstructure and excellent wear resistance, and the reinforced phases are mainly NbC and Cr23C6. Coating 4# with 25 wt.% FeNb65 + Cr3C2 has the highest microhardness of 776.3HV0.2, about 1.45 times that of the Ni45 coating, and its wear resistance is 36.36 min/mg, about 60.6 times that of the Cr12MoV steel base material and about 23.76 times that of the Ni45 coating.
Keyword :
microstructure microstructure microhardness microhardness laser cladding laser cladding in situ NbC-reinforced nickel-based coating in situ NbC-reinforced nickel-based coating wear resistance wear resistance
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GB/T 7714 | Liu, Yingpeng , Wang, Kaiming , Fu, Hanguang et al. Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings [J]. | LUBRICANTS , 2023 , 11 (8) . |
MLA | Liu, Yingpeng et al. "Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings" . | LUBRICANTS 11 . 8 (2023) . |
APA | Liu, Yingpeng , Wang, Kaiming , Fu, Hanguang , Zong, Bin , Zhang, Jiguang . Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings . | LUBRICANTS , 2023 , 11 (8) . |
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Abstract :
Nickel-based coatings obtained by laser melting are broadly applied for surface modification owing to their high bond strength and exceptional wear resistance. Nickel-based laser cladding coatings are also extensively employed in high temperature wear environments. In this paper, the research progress on improving the high temperature wear resistance of laser cladding nickel-based composite coatings was reviewed by introducing a hard ceramic phase, adding solid lubricants and rare earth elements. On this basis, the material system to enhance the high temperature wear resistance of coating was summarized from the perspectives of the type, addition amount, morphology and distribution law of the hard ceramic phase, etc. The synergistic effect of various lubricants on improving the high temperature wear resistance of coating was discussed, and the action mechanism of solid lubricants in the high temperature extreme environment was analyzed. Finally, this paper summarizes the main difficulties involved in increasing the high temperature wear resistance of nickel-based coatings and some problems worthy of attention in the future development.
Keyword :
laser cladding laser cladding high temperature wear resistance high temperature wear resistance nickel-based coatings nickel-based coatings solid lubricants solid lubricants hard ceramic phase hard ceramic phase
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GB/T 7714 | Liu, Yingpeng , Wang, Kaiming , Fu, Hanguang . Improvement of the High Temperature Wear Resistance of Laser Cladding Nickel-Based Coating: A Review [J]. | METALS , 2023 , 13 (5) . |
MLA | Liu, Yingpeng et al. "Improvement of the High Temperature Wear Resistance of Laser Cladding Nickel-Based Coating: A Review" . | METALS 13 . 5 (2023) . |
APA | Liu, Yingpeng , Wang, Kaiming , Fu, Hanguang . Improvement of the High Temperature Wear Resistance of Laser Cladding Nickel-Based Coating: A Review . | METALS , 2023 , 13 (5) . |
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Abstract :
悬浮铸造技术已被广泛应用于耐磨材料的生产中.浇注时向金属液中添加悬浮剂颗粒起到激冷和变质作用,从而能细化铸件的显微组织,改善耐磨性、韧性、硬度等综合力学性能.总结了悬浮铸造工艺特点及在铬系白口铸铁、钨铸铁、耐磨钢、轻质耐磨铝合金和复合材料中的应用,阐述了悬浮铸造工艺与电磁搅拌技术和消失模铸造技术的复合工艺的有关研究.
Keyword :
耐磨材料 耐磨材料 显微组织 显微组织 悬浮剂 悬浮剂 耐磨性 耐磨性 悬浮铸造 悬浮铸造
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GB/T 7714 | 马鸿量 , 符寒光 . 耐磨材料悬浮铸造技术的研究现状 [J]. | 中国铸造装备与技术 , 2023 , 58 (4) : 5-13 . |
MLA | 马鸿量 et al. "耐磨材料悬浮铸造技术的研究现状" . | 中国铸造装备与技术 58 . 4 (2023) : 5-13 . |
APA | 马鸿量 , 符寒光 . 耐磨材料悬浮铸造技术的研究现状 . | 中国铸造装备与技术 , 2023 , 58 (4) , 5-13 . |
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