Tribological properties and wear mechanisms of TixVNbTaWy RHEAs sliding against Si3N4 ceramic balls: The effects of Ti and W contents

Xin You; Junjie Song; Pengyu Lin; Xiaoyu Zhang; Yunfeng Su; Haifeng Wang; Yongsheng Zhang; Litian Hu

doi:10.1016/j.triboint.2022.107801

Tribological properties and wear mechanisms of Ti_xVNbTaW_y RHEAs sliding against Si₃N₄ ceramic balls: The effects of Ti and W contents

Xin You, Junjie Song, Pengyu Lin, Xiaoyu Zhang, Yunfeng Su, Haifeng Wang, Yongsheng Zhang, Litian Hu

School of Materials Sience and Engineering

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

30 Scopus citations

Abstract

Three new Ti_xVNbTaW_y RHEAs with different contents of Ti and W were prepared by mechanical mixing and spark plasma sintering. The effects of Ti and W contents on the mechanical and tribological properties were explored, with a focus on the wear mechanisms of the alloys sliding against Si₃N₄ ceramics from room temperature to 900 °C. The results showed that all three alloys exhibited high compressive strength and plastic strain of > 12% at room temperature. More crucially, the wear rate of the optimized alloy can be as low as 6.8 × 10⁻⁶ mm³/(N·m) at 600 °C. Friction-induced subsurface strengthening and the formation of continuous oxide films and plastic deformation layers played an important role in reducing the wear rate.

Original language	English
Article number	107801
Journal	Tribology International
Volume	175
DOIs	https://doi.org/10.1016/j.triboint.2022.107801
State	Published - Nov 2022

Keywords

High temperature
Mechanical properties
Refractory high-entropy alloys
Wear-resistance

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10.1016/j.triboint.2022.107801

Cite this

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title = "Tribological properties and wear mechanisms of TixVNbTaWy RHEAs sliding against Si3N4 ceramic balls: The effects of Ti and W contents",

abstract = "Three new TixVNbTaWy RHEAs with different contents of Ti and W were prepared by mechanical mixing and spark plasma sintering. The effects of Ti and W contents on the mechanical and tribological properties were explored, with a focus on the wear mechanisms of the alloys sliding against Si3N4 ceramics from room temperature to 900 °C. The results showed that all three alloys exhibited high compressive strength and plastic strain of > 12% at room temperature. More crucially, the wear rate of the optimized alloy can be as low as 6.8 × 10−6 mm3/(N·m) at 600 °C. Friction-induced subsurface strengthening and the formation of continuous oxide films and plastic deformation layers played an important role in reducing the wear rate.",

keywords = "High temperature, Mechanical properties, Refractory high-entropy alloys, Wear-resistance",

author = "Xin You and Junjie Song and Pengyu Lin and Xiaoyu Zhang and Yunfeng Su and Haifeng Wang and Yongsheng Zhang and Litian Hu",

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year = "2022",

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doi = "10.1016/j.triboint.2022.107801",

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TY - JOUR

T1 - Tribological properties and wear mechanisms of TixVNbTaWy RHEAs sliding against Si3N4 ceramic balls

T2 - The effects of Ti and W contents

AU - You, Xin

AU - Song, Junjie

AU - Lin, Pengyu

AU - Zhang, Xiaoyu

AU - Su, Yunfeng

AU - Wang, Haifeng

AU - Zhang, Yongsheng

AU - Hu, Litian

PY - 2022/11

Y1 - 2022/11

N2 - Three new TixVNbTaWy RHEAs with different contents of Ti and W were prepared by mechanical mixing and spark plasma sintering. The effects of Ti and W contents on the mechanical and tribological properties were explored, with a focus on the wear mechanisms of the alloys sliding against Si3N4 ceramics from room temperature to 900 °C. The results showed that all three alloys exhibited high compressive strength and plastic strain of > 12% at room temperature. More crucially, the wear rate of the optimized alloy can be as low as 6.8 × 10−6 mm3/(N·m) at 600 °C. Friction-induced subsurface strengthening and the formation of continuous oxide films and plastic deformation layers played an important role in reducing the wear rate.

AB - Three new TixVNbTaWy RHEAs with different contents of Ti and W were prepared by mechanical mixing and spark plasma sintering. The effects of Ti and W contents on the mechanical and tribological properties were explored, with a focus on the wear mechanisms of the alloys sliding against Si3N4 ceramics from room temperature to 900 °C. The results showed that all three alloys exhibited high compressive strength and plastic strain of > 12% at room temperature. More crucially, the wear rate of the optimized alloy can be as low as 6.8 × 10−6 mm3/(N·m) at 600 °C. Friction-induced subsurface strengthening and the formation of continuous oxide films and plastic deformation layers played an important role in reducing the wear rate.

KW - High temperature

KW - Mechanical properties

KW - Refractory high-entropy alloys

KW - Wear-resistance

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U2 - 10.1016/j.triboint.2022.107801

DO - 10.1016/j.triboint.2022.107801

M3 - 文章

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SN - 0301-679X

VL - 175

JO - Tribology International

JF - Tribology International

M1 - 107801

ER -

Tribological properties and wear mechanisms of Ti_xVNbTaW_y RHEAs sliding against Si₃N₄ ceramic balls: The effects of Ti and W contents

Abstract

Keywords

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