高熵合金涂层对铝/钢液固复合双金属组织和性能的影响

doi:10.11896/cldb.22010067

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (25159KB)
Export: BibTeX | EndNote (RIS)

Abstract FeCoCrNiAl high entropy alloy coating was thermal sprayed on the surface of 45 steel by high-velocity oxygen fuel spray process, and aluminum/steel bimetal composites were prepared by liquid-solid composite method in this work. The effect of high entropy alloy coating on the interfacial microstructure and properties of aluminum/steel bimetal was studied. Isothermal sections of Al-Fe-Si system at 600 ℃ and 750 ℃ were calculated using Thermo-Calc software. SEM-EDS, EBSD, EPMA, nano-indentation instrument and universal mechanical testing machine were utilized to analyze the interfacial microstructure and properties of the bimetals. The results show that good metallurgical bonding between Al alloy and steel without and with high entropy alloy coating was achieved, and no cracks and other defects were observed at the bimetal interface. The average thickness of transition layer was 24.5 μm and 25.7 μm, respectively. The interfacial transition layers both mainly consisted of Al₅Fe₂, τ₁-(Al, Si)₅Fe₃, Al₁₃Fe₄, τ₅-Al₇Fe₂Si and τ₆-Al₉Fe₂Si₂, and the diffusion path between Al alloy and steel was studied accordingly. No high entropy alloy layer was found at the interface of aluminum-steel bimetal after liquid-solid composite by spraying high entropy alloy coating. Co, Cr and Ni elements exist in the matrix and transition layer as solutes. The preferred orientation of Al₅Fe₂ phase in [001] direction was not changed. The nano-hardness of interfacial transition layer was higher than that of the matrix on both sides, and the average hardness of Al₅Fe₂ phase in the transition layer was the highest. The dissolution of Co, Cr and Ni into the transition layer have no effect on the hardness of the transition layer. The interfacial shear strength of the bimetal was 8.3 MPa, and raised to 12.2 MPa after spraying high entropy alloy on steel surface, which was increased by 47%. The shear fractures of the bimetals belong to brittle fracture, and the fracture structure is mainly composed of Al₅Fe₂. After thermal spraying high entropy alloy coating, the fracture of the sample has more tearing edges, and the solid solution of elements in the high entropy alloy coating improves the strength of Al₅Fe₂ to a certain extent.

Key words： aluminum/steel bimetal high entropy alloy coating thermodynamic calculation interface nano-hardness

Published: 10 August 2023 Online: 2023-08-07

CLC number:

TG14

Fund:National Key R & D Program of China (2020YFB2008400) and Program of Zhongyuan Scholar Workstation of Henan Province (214400510003).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	MA Jingbo
	WANG Tao
	CHEN Chong
	XIONG Mei
	XIAO Liqiang
	WEI Shizhong
	MAO Feng
	ZHANG Cheng

Cite this article:

MA Jingbo,WANG Tao,CHEN Chong, et al. Effect of High Entropy Alloy Coating on Microstructure and Mechanical Properties of Al/Fe Liquid-Solid Bimetal Composite[J]. Materials Reports, 2023, 37(15): 22010067-8.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.22010067 OR http://www.mater-rep.com/EN/Y2023/V37/I15/22010067

1 Jia W X, Hao Z Y, Xu H M. Journal of Zhejiang University Engineering Edition, 2008, 42(2), 5 (in Chinese).
贾维新, 郝志勇, 徐红梅. 浙江大学学报工学版, 2008, 42(2), 5.
2 Jung J G, Ahn T Y, Cho Y H, et al. Acta Materialia, 2017, 144, 31.
3 Jeon J H, Shin J H, Bae D H. Materials Science and Engineering A, 2019, 748(4), 367.
4 Zhang X M, Chen Z Y, Luo H F. Materials Reports, 2021, 35(7), 7145 (in Chinese).
张先满, 陈再雨, 罗洪峰. 材料导报, 2021, 35(7), 7145.
5 Cheng W J, Wang C J. Surface and Coatings Technology, 2009, 204(6-7), 824.
6 Chen S H, Yang D D, Zhang M X, et al. Metallurgical and Materials Transactions A, 2016, 47(10), 5088.
7 Springer H, Kostka A, Santos J, et al. Materials Science and Engineering A, 2011, 528(13-14), 4630.
8 Jiang W M, Li G Y, Jiang Z L, et al. Materials Science and Technology, 2018, 34(11), 1519.
9 Yin F C, Zhao M X, Liu Y X, et al. Transactions of Nonferrous Metals Society of China, 2013, 23(2), 556.
10 Liu Y, Bian X, Yang J, et al. Journal of Materials Research, 2013, 28(22), 3190.
11 Bhupinder D, Brown T W, Kulkarni K N. Journal of Alloys and Compounds, 2018, 769, 777.
12 Azimaee H, Sarfaraz M, Mirjalili M, et al. Surface and Coatings Technology, 2019, 357, 483.
13 Cheng W J, Wang C J. Intermetallics, 2011, 19(10), 1455.
14 Jiang W M, Fan Z T, Li G Y, et al. Journal of Alloys and Compounds, 2016, 688, 742.
15 Jiang W M, Fan Z T, Li G Y, et al. Journal of Alloys and Compounds, 2016, 678, 249.
16 Wang Q. Study on aluminum/steel bimetal casting process and interface microstructure. Master's Thesis, Harbin Engineering University, China, 2019 (in Chinese).
王强. 铝/钢双金属铸造工艺及其界面微观结构研究. 硕士学位论文, 哈尔滨工程大学, 2019.
17 Tavakoli A M, Nami B, Malekan M, et al. International Journal of Metalcasting, DOI:10. 1007/s40962-021-00630-7.
18 Cai Y, Ao S, Manladan S M, et al. Materials Research Express, 2019, 6(10), 1065.
19 Zhao M, Wu T, Liu D, et al. Materials and Corrosion, 2020, 71(3), 430.
20 Zhang G J, Tian Q W, Yin K X, et al. Intermetallics, 2020, 119, DOI:10. 1016/j. intermet. 2020. 106722.
21 Xiao J K, Tan H, Wu Y Q, et al. Surface and Coatings Technology, DOI:10. 1016/j. surfcoat. 2020. 125430.
22 Shi Q, Zhang X C, Zhou J, et al. Journal of Alloys and Compounds, DOI:10. 1016/j. jallcom. 2020. 156321.
23 Cui Y, Shen J Q, Manladan S M, et al. Applied Surface Science, DOI:10. 1016/j. apsusc. 2020. 147205.
24 Khorrami M S, Azhari H, Nademi A, et al. Intermetallics, DOI:10. 1016/j. intermet. 2020. 106876 .
25 Fan D, Kang Y T, Huang J K, et al. Journal of Lanzhou University of Technology, 2019, 45(6), 1(in Chinese).
樊丁, 康玉桃, 黄健康, 等. 兰州理工大学学报, 2019, 45(6), 1.
26 Du Y, Julius C S, Liu Z K, et al. Intermetallics, 2008, 16, 554.
27 Yang H H, Tsai W T, Kuo J C, et al. Journal of Alloys and Compounds, 2011, 509(32), 8176.
28 Naoki T, Manamu N, Satoru K, et al. Intermetallics, 2015, 67, 1.
29 Zhang N, Hu Q, Yang F, et al. Metallurgical and Materials Transactions A, 2020, 51(6), 2711.
30 Zhang L, Du Y, Steinbach I, et al. Acta Materialia, 2010, 58(10), 3664.
31 Zheng W, Wang J, He Y, et al. Calphad, 2018, 61, 189.
32 Wang S, Peng Z, Zhang W, et al. Calphad Pergamon Press, 2012, 36(9), 127.
33 Björn, Jönsson. Isij International, 1995, 35(11), 1415.
34 Naoi D, Kajihara M. Materials Science and Engineering:A, 2007, 459(1-2), 375.