Effect of anodizing treatment on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy

Baohua Nie; Zheng Zhang; Zihua Zhao; Qunpeng Zhong

doi:10.1016/j.matdes.2013.03.083

Effect of anodizing treatment on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy

Baohua Nie
, Zheng Zhang
, Zihua Zhao^*
, Qunpeng Zhong

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

30 Scopus citations

Abstract

The effects of chromic acid anodizing (CAA) and sulfuric acid anodizing (SAA) treatments on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy were investigated through ultrasonic fatigue tests. The results showed that CAA and SAA treatments resulted in an appreciable reduction in the fatigue strength and crack initiation from the interface between the anodizing film and substrate, whereas the fatigue crack of substrate specimens initiated from the specimen subsurface over 5×10⁸cycles. The decrease in fatigue strength of the CAA specimens was associated with the residual tensile stress arising from the elastic mismatch between the anodizing film and the substrate. The defects in SAA film, such as segmentation cracks and overgrowth of the anodizing film into the substrate, contributed to the reduction of fatigue strength and multi-crack initiations. The predicted fatigue limit for SAA specimens well agreed with the experimental results.

Original language	English
Pages (from-to)	1005-1010
Number of pages	6
Journal	Materials and Design
Volume	50
DOIs	https://doi.org/10.1016/j.matdes.2013.03.083
State	Published - Sep 2013

Keywords

Aluminum alloy
Anodizing treatments
Crack initiation
Very high cycle fatigue

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10.1016/j.matdes.2013.03.083

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title = "Effect of anodizing treatment on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy",

abstract = "The effects of chromic acid anodizing (CAA) and sulfuric acid anodizing (SAA) treatments on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy were investigated through ultrasonic fatigue tests. The results showed that CAA and SAA treatments resulted in an appreciable reduction in the fatigue strength and crack initiation from the interface between the anodizing film and substrate, whereas the fatigue crack of substrate specimens initiated from the specimen subsurface over 5×108cycles. The decrease in fatigue strength of the CAA specimens was associated with the residual tensile stress arising from the elastic mismatch between the anodizing film and the substrate. The defects in SAA film, such as segmentation cracks and overgrowth of the anodizing film into the substrate, contributed to the reduction of fatigue strength and multi-crack initiations. The predicted fatigue limit for SAA specimens well agreed with the experimental results.",

keywords = "Aluminum alloy, Anodizing treatments, Crack initiation, Very high cycle fatigue",

author = "Baohua Nie and Zheng Zhang and Zihua Zhao and Qunpeng Zhong",

year = "2013",

month = sep,

doi = "10.1016/j.matdes.2013.03.083",

language = "英语",

volume = "50",

pages = "1005--1010",

journal = "Materials and Design",

issn = "0264-1275",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Effect of anodizing treatment on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy

AU - Nie, Baohua

AU - Zhang, Zheng

AU - Zhao, Zihua

AU - Zhong, Qunpeng

PY - 2013/9

Y1 - 2013/9

N2 - The effects of chromic acid anodizing (CAA) and sulfuric acid anodizing (SAA) treatments on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy were investigated through ultrasonic fatigue tests. The results showed that CAA and SAA treatments resulted in an appreciable reduction in the fatigue strength and crack initiation from the interface between the anodizing film and substrate, whereas the fatigue crack of substrate specimens initiated from the specimen subsurface over 5×108cycles. The decrease in fatigue strength of the CAA specimens was associated with the residual tensile stress arising from the elastic mismatch between the anodizing film and the substrate. The defects in SAA film, such as segmentation cracks and overgrowth of the anodizing film into the substrate, contributed to the reduction of fatigue strength and multi-crack initiations. The predicted fatigue limit for SAA specimens well agreed with the experimental results.

AB - The effects of chromic acid anodizing (CAA) and sulfuric acid anodizing (SAA) treatments on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy were investigated through ultrasonic fatigue tests. The results showed that CAA and SAA treatments resulted in an appreciable reduction in the fatigue strength and crack initiation from the interface between the anodizing film and substrate, whereas the fatigue crack of substrate specimens initiated from the specimen subsurface over 5×108cycles. The decrease in fatigue strength of the CAA specimens was associated with the residual tensile stress arising from the elastic mismatch between the anodizing film and the substrate. The defects in SAA film, such as segmentation cracks and overgrowth of the anodizing film into the substrate, contributed to the reduction of fatigue strength and multi-crack initiations. The predicted fatigue limit for SAA specimens well agreed with the experimental results.

KW - Aluminum alloy

KW - Anodizing treatments

KW - Crack initiation

KW - Very high cycle fatigue

UR - https://www.scopus.com/pages/publications/84877023617

U2 - 10.1016/j.matdes.2013.03.083

DO - 10.1016/j.matdes.2013.03.083

M3 - 文章

AN - SCOPUS:84877023617

SN - 0264-1275

VL - 50

SP - 1005

EP - 1010

JO - Materials and Design

JF - Materials and Design

ER -

Effect of anodizing treatment on the very high cycle fatigue behavior of 2A12-T4 aluminum alloy

Abstract

Keywords

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