Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

Al 7075 alloy, 15 wt.% VN/7075 composites, and 20 wt.% TiB2-TiCx/7075 composites were prepared by ball milling with subsequent hot-pressing sintering. The microstructure, hardness, and wear properties at room temperature to 200 °C of Al 7075-based compos...

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Main Authors:	Yaping Bai, Jiale Wei, Naqing Lei, Jianping Li, Yongchun Guo, Mengmeng Liu
Format:	Article
Language:	English
Published:	MDPI AG 2021-06-01
Series:	Materials
Subjects:	VN/7075 composites TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites microstructure hardness friction and wear properties
Online Access:	https://www.mdpi.com/1996-1944/14/12/3389

id	doaj-88bdbd7a80a0471f8706ea748cae6f22
record_format	Article
spelling	doaj-88bdbd7a80a0471f8706ea748cae6f222021-07-01T00:35:28ZengMDPI AGMaterials1996-19442021-06-01143389338910.3390/ma14123389Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based CompositesYaping Bai0Jiale Wei1Naqing Lei2Jianping Li3Yongchun Guo4Mengmeng Liu5School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaAl 7075 alloy, 15 wt.% VN/7075 composites, and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites were prepared by ball milling with subsequent hot-pressing sintering. The microstructure, hardness, and wear properties at room temperature to 200 °C of Al 7075-based composites with different reinforcement phases were discussed. The grain uniformity degree values of 15 wt.% VN/7075 composites and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites were 0.25 and 0.13, respectively. The reinforcement phase was uniformly distributed in 15 wt.% VN/7075 composites and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites, almost no agglomeration occurred. The order of hardness was 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites (270.2 HV) > 15 wt.% VN/7075 composites (119.5 HV) > Al 7075 (81.8 HV). At the same temperature, the friction coefficient of 15 wt.% VN/7075 composites was the lowest, while the volume wear rate of 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites was the lowest. With the increase of temperature, the wear mechanism of Al 7075 changed from spalling wear to oxidation wear and adhesion wear. However, the wear mechanisms of 15 wt.% VN/7075 and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites changed from abrasive wear at room temperature to wear mechanism (oxidation wear, abrasive wear, and adhesive wear) at medium and low temperature. Comprehensive wear test results indicated that 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites had excellent tribological properties at medium and low temperature.https://www.mdpi.com/1996-1944/14/12/3389VN/7075 compositesTiB<sub>2</sub>-TiC<sub>x</sub>/7075 compositesmicrostructurehardnessfriction and wear properties
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yaping Bai Jiale Wei Naqing Lei Jianping Li Yongchun Guo Mengmeng Liu
spellingShingle	Yaping Bai Jiale Wei Naqing Lei Jianping Li Yongchun Guo Mengmeng Liu Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites Materials VN/7075 composites TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites microstructure hardness friction and wear properties
author_facet	Yaping Bai Jiale Wei Naqing Lei Jianping Li Yongchun Guo Mengmeng Liu
author_sort	Yaping Bai
title	Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites
title_short	Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites
title_full	Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites
title_fullStr	Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites
title_full_unstemmed	Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites
title_sort	effect of vn and tib<sub>2</sub>-tic<sub>x</sub> reinforcement on wear behavior of al 7075-based composites
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2021-06-01
description	Al 7075 alloy, 15 wt.% VN/7075 composites, and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites were prepared by ball milling with subsequent hot-pressing sintering. The microstructure, hardness, and wear properties at room temperature to 200 °C of Al 7075-based composites with different reinforcement phases were discussed. The grain uniformity degree values of 15 wt.% VN/7075 composites and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites were 0.25 and 0.13, respectively. The reinforcement phase was uniformly distributed in 15 wt.% VN/7075 composites and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites, almost no agglomeration occurred. The order of hardness was 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites (270.2 HV) > 15 wt.% VN/7075 composites (119.5 HV) > Al 7075 (81.8 HV). At the same temperature, the friction coefficient of 15 wt.% VN/7075 composites was the lowest, while the volume wear rate of 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites was the lowest. With the increase of temperature, the wear mechanism of Al 7075 changed from spalling wear to oxidation wear and adhesion wear. However, the wear mechanisms of 15 wt.% VN/7075 and 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites changed from abrasive wear at room temperature to wear mechanism (oxidation wear, abrasive wear, and adhesive wear) at medium and low temperature. Comprehensive wear test results indicated that 20 wt.% TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites had excellent tribological properties at medium and low temperature.
topic	VN/7075 composites TiB<sub>2</sub>-TiC<sub>x</sub>/7075 composites microstructure hardness friction and wear properties
url	https://www.mdpi.com/1996-1944/14/12/3389
work_keys_str_mv	AT yapingbai effectofvnandtibsub2subticsubxsubreinforcementonwearbehaviorofal7075basedcomposites AT jialewei effectofvnandtibsub2subticsubxsubreinforcementonwearbehaviorofal7075basedcomposites AT naqinglei effectofvnandtibsub2subticsubxsubreinforcementonwearbehaviorofal7075basedcomposites AT jianpingli effectofvnandtibsub2subticsubxsubreinforcementonwearbehaviorofal7075basedcomposites AT yongchunguo effectofvnandtibsub2subticsubxsubreinforcementonwearbehaviorofal7075basedcomposites AT mengmengliu effectofvnandtibsub2subticsubxsubreinforcementonwearbehaviorofal7075basedcomposites
_version_	1721348187441070080

Effect of VN and TiB<sub>2</sub>-TiC<sub>x</sub> Reinforcement on Wear Behavior of Al 7075-Based Composites

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