+Advanced Search
Electric-explosive alloying of FeCoCrNiAlx high-entropy alloy
Author:
Affiliation:

1.School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou Gansu;2.School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou Gansu/State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou Gansu

Clc Number:

TG174;TG146

Fund Project:

The National Natural Science Foundation of China (51765038)

  • Article
  • | |
  • Metrics
  • |
  • Reference [15]
  • | | | |
  • Comments
    Abstract:

    Electric-explosive spraying is a new method of surface modification. It uses high voltage to pulse discharge the sprayed material, and the instantaneous high current heats it and explodes, producing high-temperature particles that are sprayed onto the surface of the substrate along with the shock wave to form a coating. In this paper, a new process of preparing high entropy alloy coating by electric explosion method is proposed. The feasibility of this method to prepare high-entropy alloy coatings was studied by XRD, SEM, EDS, and current and voltage waveforms. The results show that FeCoCrNiAlx (x=0, 0.5, 1.0) alloy coatings have formed simple solid solutions of FCC, BCC and FCC+BCC structures, and the phase structure of the coating gradually changes from FCC phase to BCC phase with the increase of Al content. The surface of the coating is smooth and dense, without obvious cracks, and the elements are evenly distributed on the surface of the coating, and no obvious element segregation is found. The energy deposition under the initial charging voltage of 11kV is 285.770 J, and the average deposition efficiency reaches 48.8%. With the increase of Al content, the microhardness of the coating gradually increases. When x=1.0, the average microhardness reaches the maximum value of 531.8HV, which is about twice the microhardness of the substrate. It can be seen that the high entropy alloy coating is successfully prepared by electric-explosive method.

    Reference
    [1] Zhang Weiran, Liaw Peter K., Zhang Yong. Science China Materials[J], 2018, 61: 2.
    [2] Cui Yan, Shen Junqi, Manladan Sunusi Marwana, et al. Applied Surface Science[J], 2020, 530.
    [3] Hemphilla M.A., Yuan T., Wang G.Y., et al. Acta Materialia[J], 2012, 60(16): 5723.
    [4] Wang Junjun, Kuang Shaofu, Yu Xu, et al. Surface and Coatings Technology[J], 2020, 403: 126374.
    [5] Senkov O.N., Senkova S.V., Woodward C. Acta Materialia[J], 2014, 68: 214.
    [6] Wang Xin, Zhang Yunpeng. Materials Chemistry and Physics[J], 2020, 254: 123440.
    [7] Yang Mingbo(杨明波), Liu Jing(刘 婧), Zhong Luoxi(钟罗喜), et al. Journal of Chongqing University of Technology(Natural Science)(重庆理工大学学报(自然科学)), 2019, 33(2): 99.
    [8] Liang Hui, Qiao Dongxu, Miao Junwei, et al. Journal of Materials Science Technology[J], 2021, 85: 224.
    [9] Zhu Shuaishuai, Zhang Zhijia, Zhang Baosen, et al. Journal of Thermal Spray Technology[J], 2021, 30: 772.
    [10] Zhang J Y, He Q F, Li J, et al. International Journal of Plasticity[J], 2021, 139: 102951.
    [11] Han Feng, Zhu Liang, Liu Zonghan et al. Surface Coatings Technology[J], 2019, 374: 44.
    [12] Liu Zonghan(刘宗翰). Development of Electro-Explosion Spraying Apparatus for Tube Internal Wall and Process Test of Preparation of Ti3SiC2 Coating[D]. Lanzhou: Lanzhou University of Technology, 2020.
    [13] Li R X, Liaw P K, Zhang Y. Materials Science and Engineering A[J], 2017, 707: 668.
    [14] Han Feng(韩 峰), Zhu Liang(朱 亮), Wang Xudong(王旭东). High Voltage Engineering(高压电技术)[J], 2020, 46(9): 3311.
    [15] Han Feng(韩 峰). Study on the Process and Mechanism of Constrained Electrical Explosion Spraying[D]. Lanzhou: Lanzhou University of Technology, 2019.
    Related
    Cited by
    Comments
    Comments
    分享到微博
    Submit
Get Citation

[Yan Weiliang, Zhu Liang, Wei Yupeng, Zhou Hui, Zhou Yi, Tang Guoxi. Electric-explosive alloying of FeCoCrNiAlx high-entropy alloy[J]. Rare Metal Materials and Engineering,2022,51(4):1525~1530.]
DOI:10.12442/j. issn.1002-185X.20210783

Copy
Article Metrics
  • Abstract:602
  • PDF: 984
  • HTML: 147
  • Cited by: 0
History
  • Received:September 02,2021
  • Revised:September 08,2021
  • Adopted:September 09,2021
  • Online: May 05,2022
  • Published: April 28,2022