交变磁场频率对Ni60/La2O3激光熔覆层组织和性能的影响

高中堂, 王睿其, 张树清, 高志明, 柏广海, 张传伟

高中堂, 王睿其, 张树清, 高志明, 柏广海, 张传伟. 交变磁场频率对Ni60/La2O3激光熔覆层组织和性能的影响[J]. 材料开发与应用, 2025, 40(1): 91-100.
引用本文: 高中堂, 王睿其, 张树清, 高志明, 柏广海, 张传伟. 交变磁场频率对Ni60/La2O3激光熔覆层组织和性能的影响[J]. 材料开发与应用, 2025, 40(1): 91-100.
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GAO Zhongtang, WANG Ruiqi, ZHANG Shuqing, GAO Zhiming, BAI Guanghai, ZHANG Chuanwei. Effect of Alternating Magnetic Field Frequency on Microstructure and Properties of Ni60/La2O3 Laser Cladding Layer[J]. Development and Application of Materials, 2025, 40(1): 91-100.
Citation: GAO Zhongtang, WANG Ruiqi, ZHANG Shuqing, GAO Zhiming, BAI Guanghai, ZHANG Chuanwei. Effect of Alternating Magnetic Field Frequency on Microstructure and Properties of Ni60/La2O3 Laser Cladding Layer[J]. Development and Application of Materials, 2025, 40(1): 91-100.
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交变磁场频率对Ni60/La2O3激光熔覆层组织和性能的影响

  • 1. 西安科技大学 机械工程学院, 陕西 西安 710054;

  • 2. 西安科技大学 材料科学与工程学院, 陕西 西安 710054

基金项目: 

国家自然科学基金资助项目(51804251,U2067217,52104384)

详细信息
    作者简介:

    高中堂,男,博士,副教授,主要研究方向增材制造,激光加工强化与再制造,精密铸造成型技术等。E-mail: zhongtanggao@xust.edu.cn

  • 中图分类号: TG146.21

Effect of Alternating Magnetic Field Frequency on Microstructure and Properties of Ni60/La2O3 Laser Cladding Layer

  • 1. School of Mechanical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;

  • 2. College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

摘要

    摘要
  • 摘要: 利用电磁场辅助激光熔覆技术在35CrMoV钢表面制备Ni60/La2O3合金熔覆层,分别研究交变磁场频率为50 Hz、100 Hz、150 Hz和200 Hz对熔覆层微观组织、物相组成、元素偏析、摩擦磨损和耐腐蚀性能的影响。结果表明:交变电磁场频率的变化通过影响熔池中的元素扩散、结晶过程及相变行为,显著改变了熔覆层的微观组织和性能。不同交变磁场频率下Ni60/La2O3熔覆层均由γ-(Fe,Ni)、Cr2B、Cr23C6、CrB、Cr7C3和Ni3Si相构成,但不同频率下相的含量不同。50 Hz和200 Hz下熔覆层Ni、Cr、C和Fe等元素的偏析程度大于100 Hz和150 Hz下熔覆层元素的。交变磁场频率增加可提高熔覆层显微硬度,200 Hz时其硬度值最大但波动范围也较大。熔覆层的磨痕深度随交变磁场频率的增加先减少后增加,在150 Hz时层熔覆层的磨痕深度和摩擦因数均最小。150 Hz时熔覆层耐腐蚀性能最佳,其自腐蚀电位为-0.250 V,自腐蚀电流密度为1.33×10-9 A/cm2。
    Abstract: The Ni60/La2O3 alloy cladding layer is prepared on the surface of 35CrMoV steel by alternating magnetic field assisted laser cladding technology. The effects of alternating magnetic field frequencies of 50 Hz, 100 Hz, 150 Hz and 200 Hz on the microstructure, phase composition, element segregation, friction and wear and corrosion resistance of the cladding layer are studied. Results show that the change of alternating magnetic field frequency significantly changes the microstructure and properties of the cladding layer by affecting the element diffusion, crystallization process and phase transformation behavior in the molten pool. The Ni60/La2O3 cladding layers with different alternating magnetic field frequencies are composed of γ- (Fe, Ni), Cr2B, Cr23C6, CrB, Cr7C3 and Ni3Si phases, and the phase compositions are different with different frequencies. The segregations of Ni, Cr, C and Fe in the cladding layers with 50 and 200 Hz are greater than those at 100 and 150 Hz. The increase of magnetic field frequency can improve the microhardness of the cladding layer, and the hardness value is the largest and the fluctuation range is large when the alternating magnetic field frequency is 200 Hz. The wear scar depth decreases first and then increases with the increase of frequency, and the wear scar depth and friction coefficient are the smallest when the frequency is 150 Hz. The corrosion resistance of the cladding layer is the best when the frequency is 150 Hz, with the self-corrosion potential of -0.250 V and self-corrosion current density of 1.33×10-9 A/cm2.
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  • 收稿日期:  2024-10-17

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