Tribological behaviors of nanotwinned Al alloys

Yifan Zhang; Tongjun Niu; Nicholas A. Richter; Tianyi Sun; Nan Li; Haiyan Wang; Xinghang Zhang

doi:10.1016/j.apsusc.2022.154108

Tribological behaviors of nanotwinned Al alloys

Yifan Zhang, Tongjun Niu, Nicholas A. Richter, Tianyi Sun, Nan Li, Haiyan Wang, Xinghang Zhang

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Wear-induced damages cause significant materials loss each year. Al alloys are widely used by industry but usually have low wear resistance. Here, we compare the tribological behaviors of ultrafine grained Al, a nanoprecipitate hardened Al 7075 alloy and nanotwinned Al–Ni alloys using the nanoscratch. The nanotwinned Al–Ni alloys exhibit lower coefficient of friction and much greater wear resistance than the Al and Al 7075 alloys. The enhanced wear properties of Al–Ni alloys arise from their high strength and the evolution of nanotwinned microstructures into gradient nanograins during wear. These findings on fundamental wear mechanisms in nanotwinned alloys may advance the discovery of wear-resistant metallic materials.

Original language	English
Article number	154108
Journal	Applied Surface Science
Volume	600
DOIs	https://doi.org/10.1016/j.apsusc.2022.154108
State	Published - Oct 30 2022
Externally published	Yes

Funding

We acknowledge the support from the Department of energy – Basic energy Science (DOE Award number (DOE Award number: DE–SC0016337). Accesses to the Microscopy Facilities at Purdue University and DOE-Center for Integrated Nanotechnologies (managed by Los Alamos National laboratory) are also acknowledged. We acknowledge the support from the Department of energy – Basic energy Science (DOE Award number (DOE Award number: DE–SC0016337). Accesses to the Microscopy Facilities at Purdue University and DOE-Center for Integrated Nanotechnologies (managed by Los Alamos National laboratory) are also acknowledged.

Funders	Funder number
DOE-Center
U.S. Department of Energy	DE–SC0016337
Basic Energy Sciences
Purdue University

Keywords

Al alloys
Nano scratch
Nanotwin
Tribological behavior

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10.1016/j.apsusc.2022.154108

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title = "Tribological behaviors of nanotwinned Al alloys",

abstract = "Wear-induced damages cause significant materials loss each year. Al alloys are widely used by industry but usually have low wear resistance. Here, we compare the tribological behaviors of ultrafine grained Al, a nanoprecipitate hardened Al 7075 alloy and nanotwinned Al–Ni alloys using the nanoscratch. The nanotwinned Al–Ni alloys exhibit lower coefficient of friction and much greater wear resistance than the Al and Al 7075 alloys. The enhanced wear properties of Al–Ni alloys arise from their high strength and the evolution of nanotwinned microstructures into gradient nanograins during wear. These findings on fundamental wear mechanisms in nanotwinned alloys may advance the discovery of wear-resistant metallic materials.",

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AU - Niu, Tongjun

AU - Richter, Nicholas A.

AU - Sun, Tianyi

AU - Li, Nan

AU - Wang, Haiyan

AU - Zhang, Xinghang

PY - 2022/10/30

Y1 - 2022/10/30

N2 - Wear-induced damages cause significant materials loss each year. Al alloys are widely used by industry but usually have low wear resistance. Here, we compare the tribological behaviors of ultrafine grained Al, a nanoprecipitate hardened Al 7075 alloy and nanotwinned Al–Ni alloys using the nanoscratch. The nanotwinned Al–Ni alloys exhibit lower coefficient of friction and much greater wear resistance than the Al and Al 7075 alloys. The enhanced wear properties of Al–Ni alloys arise from their high strength and the evolution of nanotwinned microstructures into gradient nanograins during wear. These findings on fundamental wear mechanisms in nanotwinned alloys may advance the discovery of wear-resistant metallic materials.

AB - Wear-induced damages cause significant materials loss each year. Al alloys are widely used by industry but usually have low wear resistance. Here, we compare the tribological behaviors of ultrafine grained Al, a nanoprecipitate hardened Al 7075 alloy and nanotwinned Al–Ni alloys using the nanoscratch. The nanotwinned Al–Ni alloys exhibit lower coefficient of friction and much greater wear resistance than the Al and Al 7075 alloys. The enhanced wear properties of Al–Ni alloys arise from their high strength and the evolution of nanotwinned microstructures into gradient nanograins during wear. These findings on fundamental wear mechanisms in nanotwinned alloys may advance the discovery of wear-resistant metallic materials.

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Tribological behaviors of nanotwinned Al alloys

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Keywords

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