蒋德兵1, 贺定勇1, 周正1, 谈震1, 王国红2. Fe-15Cr-3.5B-xC堆焊合金微观组织与耐磨性的研究[J]. 焊接, 2017, (7): 28-31.
引用本文: 蒋德兵1, 贺定勇1, 周正1, 谈震1, 王国红2. Fe-15Cr-3.5B-xC堆焊合金微观组织与耐磨性的研究[J]. 焊接, 2017, (7): 28-31.
Jiang Debing1, He Dingyong1, Zhou Zheng1, Tan Zhen1, Wang Guohong2. Microstructure and wear resistance of Fe-15Cr-3.5B-xC hardfacing alloys[J]. WELDING & JOINING, 2017, (7): 28-31.
Citation: Jiang Debing1, He Dingyong1, Zhou Zheng1, Tan Zhen1, Wang Guohong2. Microstructure and wear resistance of Fe-15Cr-3.5B-xC hardfacing alloys[J]. WELDING & JOINING, 2017, (7): 28-31.

Fe-15Cr-3.5B-xC堆焊合金微观组织与耐磨性的研究

Microstructure and wear resistance of Fe-15Cr-3.5B-xC hardfacing alloys

  • 摘要: Fe-15Cr-3.5B-xC堆焊合金微观组织与耐磨性的研究

     

    Abstract: Fe-15Cr-3.5B-xC(x=0.1, 0.5, 1. 0wt.%) hardfacing alloys with different carbon contents were deposited by flux-cored wire using metal active gas arc welding (MAG). The effects of carbon contents on microstructure of the hardfacing alloy were analyzed by optical microscope, X-ray diffraction (XRD) and scanning electron microscopy(SEM). The macro hardness and wear resistance of hardfacing alloys were tested. The results indicate that Fe-15Cr-3.5B-xC hardfacing alloys consisted of MB, Fe B,M23(B,C)6,M3(B,C) and matrix, which contained ferrite , austenite and Fe-Cr solid solutions. With the increasing carbon content, the volume fraction of plate strip M2B decreases. Although the hardness of hardfacing alloys is improved, but wear resistance decreases. The main wear mechanism referred to furrows which caused by plastic deformation , brittle fracture and fall off of hard phase.

     

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