Zr-based metallic glass thin film coating for fatigue-properties improvement of 7075-T6 aluminum alloy

被引：22

作者：

Chang, Y. Z. ^{[1
]}

Tsai, P. H. ^{[2
]}

Li, J. B. ^{[1
]}

Lin, H. C. ^{[2
]}

Jang, J. S. C. ^{[1
,2
]}

Li, C. ^{[1
]}

Chen, G. J. ^{[3
]}

Chen, Y. C. ^{[4
]}

Chu, J. P. ^{[4
]}

Liaw, P. K. ^{[5
]}

机构：

[1] Natl Cent Univ, Dept Mech Engn, Chungli 32001, Taiwan

[2] Natl Cent Univ, Inst Mat Sci & Engn, Chungli 32001, Taiwan

[3] I Shou Univ, Dept Mat Sci & Engn, Kaohsiung 84001, Taiwan

[4] Natl Taiwan Univ Sci & Technol, Dept Mat Sci & Engn, Taipei 10607, Taiwan

[5] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

THIN SOLID FILMS | 2013年 / 544卷

基金：

美国国家科学基金会;

关键词：

Metallic glass; Thin film; Sputtering; Fatigue property; RESISTANCE; ENHANCEMENTS; STRENGTH; BEHAVIOR;

D O I：

10.1016/j.tsf.2013.02.104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to improve the fatigue life of high strength aluminum alloy, a protection coating with 200 nm Zr-based metallic glass thin film (MGTF) coupled with 50 nm titanium thin film buffer layer was coated on the 7075-T6 aluminum alloy by DC sputtering. The results of four-point-bending fatigue test revealed that the fatigue life of 7075-T6 aluminum alloy with Zr-based MGTF could be improved by 30 times at a stress level of 250 MPa. The improvement of Zr-based MGTF coated samples in fatigue limit was 235 MPa (56.7% increase) in comparison with 150 MPa for the uncoated samples. The superior mechanical properties of Zr-based MGTF, such as high strength and good bending ductility, lower surface roughness, good adhesion between the film and the substrate, and high compressive residual stress are the key factors to improve the fatigue resistance of the coated aluminum alloy. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：331 / 334

页数：4

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