The behavior of fatigue crack initiation and propagation in AA2524-T34 alloy

Z. Q. Zheng; B. Cai; T. Zhai; S. C. Li

doi:10.1016/j.msea.2010.10.085

The behavior of fatigue crack initiation and propagation in AA2524-T34 alloy

Z. Q. Zheng, B. Cai, T. Zhai, S. C. Li

Chemical and Materials Engineering

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

67 Scopus citations

Abstract

With the help of a four-point-bend fatigue rig, high-cycle fatigue tests were carried out on an AA2524 Al alloy at room temperature, 15. Hz and R=-0.1 in ambient air. Optical microscopy (OM) and scanning electron microscopy (SEM) were employed to capture a detailed view of the fatigue crack initiation and propagation of the samples as well. The fatigue strength is 70. pct of their yield strength. Fatigue cracks were found to be always initiated from the second phase particles or the interface between the second phase particles and matrix. And grain orientation may be the key factor controlling the micro-crack deflection.

Original language	English
Pages (from-to)	2017-2022
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	528
Issue number	4-5
DOIs	https://doi.org/10.1016/j.msea.2010.10.085
State	Published - Feb 25 2011

Keywords

Aluminum alloys
Fatigue crack initiation
Micro-crack propagation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2010.10.085

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title = "The behavior of fatigue crack initiation and propagation in AA2524-T34 alloy",

abstract = "With the help of a four-point-bend fatigue rig, high-cycle fatigue tests were carried out on an AA2524 Al alloy at room temperature, 15. Hz and R=-0.1 in ambient air. Optical microscopy (OM) and scanning electron microscopy (SEM) were employed to capture a detailed view of the fatigue crack initiation and propagation of the samples as well. The fatigue strength is 70. pct of their yield strength. Fatigue cracks were found to be always initiated from the second phase particles or the interface between the second phase particles and matrix. And grain orientation may be the key factor controlling the micro-crack deflection.",

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AU - Zheng, Z. Q.

AU - Cai, B.

AU - Zhai, T.

AU - Li, S. C.

PY - 2011/2/25

Y1 - 2011/2/25

N2 - With the help of a four-point-bend fatigue rig, high-cycle fatigue tests were carried out on an AA2524 Al alloy at room temperature, 15. Hz and R=-0.1 in ambient air. Optical microscopy (OM) and scanning electron microscopy (SEM) were employed to capture a detailed view of the fatigue crack initiation and propagation of the samples as well. The fatigue strength is 70. pct of their yield strength. Fatigue cracks were found to be always initiated from the second phase particles or the interface between the second phase particles and matrix. And grain orientation may be the key factor controlling the micro-crack deflection.

AB - With the help of a four-point-bend fatigue rig, high-cycle fatigue tests were carried out on an AA2524 Al alloy at room temperature, 15. Hz and R=-0.1 in ambient air. Optical microscopy (OM) and scanning electron microscopy (SEM) were employed to capture a detailed view of the fatigue crack initiation and propagation of the samples as well. The fatigue strength is 70. pct of their yield strength. Fatigue cracks were found to be always initiated from the second phase particles or the interface between the second phase particles and matrix. And grain orientation may be the key factor controlling the micro-crack deflection.

KW - Aluminum alloys

KW - Fatigue crack initiation

KW - Micro-crack propagation

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DO - 10.1016/j.msea.2010.10.085

M3 - Article

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SN - 0921-5093

VL - 528

SP - 2017

EP - 2022

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 4-5

ER -

The behavior of fatigue crack initiation and propagation in AA2524-T34 alloy

Abstract

Keywords

ASJC Scopus subject areas

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