Mechanical performance of metallic glasses during nanoscratch tests

被引：52

作者：

Huang, Yongjiang ^{[1
,2
,3
]}

Chiu, Yu Lung ^{[4
]}

Shen, Jun ^{[1
,2
]}

Sun, Yi ^{[3
]}

Chen, John J. J. ^{[5
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Minist Educ, Harbin Inst Technol, Key Lab Microsyst & Microstruct Mfg, Beijing, Peoples R China

[3] Harbin Inst Technol, Dept Astronaut & Mech, Harbin 150001, Peoples R China

[4] Univ Birmingham, Sch Met & Mat, Edgbaston B15 2TT, England

[5] Univ Auckland, Dept Chem & Mat Engn, Auckland, New Zealand

来源：

INTERMETALLICS | 2010年 / 18卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Glasses; metallic; Plastic deformation mechanisms; Mechanical properties at ambient temperature; Electron microscopy; scanning; Mechanical testing; SHEAR-BAND FORMATION; WEAR-RESISTANCE; ABRASIVE WEAR; NANOINDENTATION; BEHAVIOR; INDENTATION; EMBRITTLEMENT; DEFORMATION; HARDNESS; LIQUID;

D O I：

10.1016/j.intermet.2010.02.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanoscratch experiments on four bulk metallic glasses using a pyramidal diamond tip (Berkovich) indenter have been carried out under different loads and scratching velocities. There exists a general correlation between the hardness and wear resistance, i.e., a lower hardness produces a lower wear resistance. Scratch velocity appears to have little effect on the scratch depths of the four alloys studied. However, faster scratch velocity leads to finer shear bands. Compared with ribbon sample with the same chemical composition, Ti-based bulk glassy sample that experienced slower cooling rate during solidification, and thus contained less free volume, exhibits better wear resistance. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1056 / 1061

页数：6

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