[1]刘晓丽,葛卫京,左圆圆.doi: 10.3969/j.issn.1001-3849.2025.08.006不同振幅超声能场对激光熔覆铁基粉末组织及性能的影响[J].电镀与精饰,2025,(08):34-40.
　Liu Xiaoli*,Ge Weijing,Zuo Yuanyuan.Effects of ultrasonic fields with different amplitudes on microstructure and properties of laser cladding Fe-based powder[J].Plating & Finishing,2025,(08):34-40.
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doi: 10.3969/j.issn.1001-3849.2025.08.006不同振幅超声能场对激光熔覆铁基粉末组织及性能的影响()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年08
页码:
34-40
栏目:
出版日期:
2025-08-31

文章信息/Info

Title:
Effects of ultrasonic fields with different amplitudes on microstructure and properties of laser cladding Fe-based powder
作者:
刘晓丽; 葛卫京; 左圆圆
(商丘工学院 机械工程学院,河南 商丘 476000)
Author(s):
Liu Xiaoli*;  Ge Weijing;  Zuo Yuanyuan
(School of Mechanical Engineering, Shangqiu Institute of Technology, Shangqiu 476000, China)
关键词:
超声能场; 激光熔覆; 铁基粉末; 微观组织; 力学性能
Keywords:
ultrasonic field;  laser cladding;  Fe-based powder;  microstructure;  mechanical property
分类号:
TG142
文献标志码:
A
摘要:
通过在304不锈钢上熔覆Fe-Cr-V铁基粉末，研究了不同振幅的超声能场对激光熔覆高钒铁基涂层微观组织及力学性能影响。结果表明，由于超声的空化效应，能够有效细化晶粒同时促进界面处的CET转变，改善了微观组织不均匀性。在未施加超声、施加超声(振幅为35和50 μm)的条件下，柱状晶长度分别为42.2、32.7和8.1 μm，大大降低了柱状晶区域宽度，促进了碳化钒(VC)的析出。未施加超声条件下显微硬度梯度较大，显微硬度差异值可达162.7 HV，而35 μm振幅超声条件下显微硬度较为平稳，硬度梯度较小，熔覆层的组织在各方向的性能更为均匀。施加35和50 μm振幅超声能场时，抗拉强度分别为1 279.3和1 162.6 MPa，较未施加超声能场条件提高了28.6%及17.0%。
Abstract:
The effect of ultrasonic energy field with different amplitudes on the microstructure and mechanical properties of Fe-based laser cladding on 304 stainless steel was investigated. The results show that due to the cavitation effect of ultrasound, the grain can be refined effectively and the CET transition at the interface can be promoted, and the microstructure inhomogeneity can be improved. The length of the columnar crystal is 42.2, 32.7 and 8.1 μm, respectively, under the condition of no ultrasonic application and with ultrasonic application (amplitude 35 and 50 μm), which greatly reduces the width of the columnar crystal region and promotes the precipitation of vanadium carbide (VC). When ultrasound is not applied, the microhardness gradient is large, and the difference in microhardness can reach 162.7 HV. However, under the condition of 35 μm amplitude ultrasound, the microhardness is relatively stable, the hardness gradient is small, and the microstructure of the cladding layer has more uniform properties in all directions.When ultrasonic amplitude is 35 and 50 μm, the tensile strength is 1 279.3 and 1 162.6 MPa respectively, which is 28.6% and 17.0% higher than that without ultrasonic energy field applied

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更新日期/Last Update: 2025-08-11