Microstructure and wear properties of nano-Al<sub>2</sub>O<sub>3p</sub>/Al(7075) composites fabricated by ball milling-spray-stirring process

WU Ruirui; DING Fushuai; LI Qiushu; WANG Rongfeng; SUN Longyu

doi:10.13801/j.cnki.fhclxb.20200221.001

Volume 37 Issue 10

Oct. 2020

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WU Ruirui, DING Fushuai, LI Qiushu, et al. Microstructure and wear properties of nano-Al2O3p/Al(7075) composites fabricated by ball milling-spray-stirring process[J]. Acta Materiae Compositae Sinica, 2020, 37(10): 2512-2517. doi: 10.13801/j.cnki.fhclxb.20200221.001

Citation:

WU Ruirui, DING Fushuai, LI Qiushu, et al. Microstructure and wear properties of nano-Al₂O_3p/Al(7075) composites fabricated by ball milling-spray-stirring process[J]. Acta Materiae Compositae Sinica, 2020, 37(10): 2512-2517. doi: 10.13801/j.cnki.fhclxb.20200221.001

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Microstructure and wear properties of nano-Al₂O_3p/Al(7075) composites fabricated by ball milling-spray-stirring process

doi: 10.13801/j.cnki.fhclxb.20200221.001

WU Ruirui^{1
,
,},
DING Fushuai^2
,,
LI Qiushu^2
,,
WANG Rongfeng^2
,,
SUN Longyu^3
,

1.
Analysis and Testing Center, Taiyuan University of Science and Technology, Taiyuan 030024, China
2.
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
3.
Jiangling Heavy Vehicle Co. Ltd., Taiyuan 030024, China

Received Date: 2019-11-27
Accepted Date: 2020-02-14

Available Online: 2020-02-21

Publish Date: 2020-10-15

Abstract

Abstract

The new way of the ball milling-spray-stirring process was used to fabricate nano-Al₂O₃particle (Al₂O_3p)/Al(7075) composites and the spray-stirring device was designed which can inject continuously a spot of nano-Al₂O_3p into the Al melt. The effect of nano-Al₂O_3p reinforcement on the microstructure of Al(7075) matrix alloy was observed, and the wear characteristics of Al(7075) matrix and nano-Al₂O_3p/Al(7075) composites were tested. The wear characteristics of the nano-Al₂O_3p/Al(7075) composites and Al(7075) matrix were measured at various loads(15 N, 25 N and 35 N). The results show the nano-Al₂O_3p/Al(7075) composites appears as fine grain, and the distribution of the reinforcement in the matrix is uniform, and well bonded with the matrix. As the load increasing, the wear lose of the nano-Al₂O_3p/Al(7075) composites is slower than the Al(7075) matrix. When the load is 35 N, the nano-Al₂O_3p/Al(7075) composites exhibite smaller wear width and wear debris. The improvement of the wear resistance of the nano-Al₂O_3p/Al(7075) composites occurs mainly by supporting of the Al₂O_3p and strengthening of the fine-grain.
- Al(7075),
- nano-Al₂O_3p,
- composites,
- wear resistance,
- microstructure
Long Abstrsct
Innovation Points

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References(25)

References

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