Mechanical and tribological properties of Zr-Cu-Ni-Al bulk metallic glasses with dual-phase structure

被引：48

作者：

Zhou, Qing ^{[1
]}

Han, Weichao ^{[1
]}

Luo, Dawei ^{[1
]}

Du, Yin ^{[1
]}

Xie, Jiyang ^{[2
]}

Wang, Xian-Zong ^{[1
]}

Zou, Qiguang ^{[1
]}

Zhao, Xiaoxing ^{[3
]}

Wang, Haifeng ^{[1
]}

Beake, Ben D. ^{[3
]}

机构：

[1] Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

[2] Yunnan Univ, Sch Mat & Energy, Natl Ctr Int Res Photoelect & Energy Mat, Key Lab LCR Mat & Devices Yunnan Prov, Kunming 650091, Peoples R China

[3] Micro Mat Ltd, Willow House,Ellice Way, Wrexham LL13 7YL, Wales

来源：

WEAR | 2021年 / 474卷

关键词：

Bulk metallic glass; Fe addition; Tribology; Nano-scratch; CRACKING MECHANISM; WEAR MECHANISMS; FRICTION; PERFORMANCE; PLASTICITY; SEPARATION; BEHAVIOR; CONTACT; FATIGUE; ALLOYS;

D O I：

10.1016/j.wear.2021.203880

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of Fe addition on the structure, mechanical and wear properties of Zr?Cu?Ni?Al bulk metallic glasses (BMGs) was systematically investigated by thermal analysis, transmission electron microscopy (TEM), the compression test, the pin-on-disk macroscopic wear test and the microscopic nanoscratch test. TEM observation revealed the formation of a second glassy phase with a few nanometers in diameter in the Zr63.6-xCu18Ni10.4Al8Fex (x = 1, 3, 5) BMGs. The results of the mechanical tests showed that although compression strength and hardness do not change much, a remarkable enhancement in plasticity occurs in the Zr58.6Cu18Ni10.4Al8Fe5 BMG, which is presumably due to the restriction of the nano-scale second phase on shear banding. Phase separation was also found to promote multiple shear bands, enhanced toughness and oxidative wear, which work synergistically during the tribological test to improve the wear resistance of Zr?Cu?Ni?Al BMGs. These findings provide some insights into the wear mechanisms of dual-phase BMGs, which may offer new strategies for design and optimization of BMGs with desired wear performance.

引用

页数：13

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