Investigation of fatigue crack propagation behavior of 5083 aluminum alloy under various stress ratios: Role of grain boundary and Schmid factor

Mingyang Ma; Bing Wang; Huiqun Liu; Danqing Yi; Fanghua Shen; Tongguang Zhai

doi:10.1016/j.msea.2019.138871

Investigation of fatigue crack propagation behavior of 5083 aluminum alloy under various stress ratios: Role of grain boundary and Schmid factor

Mingyang Ma, Bing Wang, Huiqun Liu, Danqing Yi, Fanghua Shen, Tongguang Zhai

Chemical and Materials Engineering

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

69 Scopus citations

Abstract

The fatigue tolerance of 5083 aluminum (Al) alloy has attracted considerable research interest owing to its wide application in railway vehicle and shipbuilding industries. Thus, the fatigue crack propagation (FCP) behavior of this alloy is studied under various stress ratio (R) conditions. The results show that the higher R, the higher is FCP rate and the lower are threshold and fracture toughness. Microstructure examination of the crack path shows that the crack tends to propagate toward grains with lower twist angle and higher Schmid factor with an increase in R. The effect of R on FCP behavior was discussed from the microstructure perspective through a modified crystallographic model that considers the twist angle and the Schmid factor.

Original language	English
Article number	138871
Journal	Materials Science and Engineering: A
Volume	773
DOIs	https://doi.org/10.1016/j.msea.2019.138871
State	Published - Jan 31 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

5083 aluminum alloy
Fatigue crack propagation
Schmid factor
Stress ratio
Twist angle

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2019.138871

Cite this

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title = "Investigation of fatigue crack propagation behavior of 5083 aluminum alloy under various stress ratios: Role of grain boundary and Schmid factor",

abstract = "The fatigue tolerance of 5083 aluminum (Al) alloy has attracted considerable research interest owing to its wide application in railway vehicle and shipbuilding industries. Thus, the fatigue crack propagation (FCP) behavior of this alloy is studied under various stress ratio (R) conditions. The results show that the higher R, the higher is FCP rate and the lower are threshold and fracture toughness. Microstructure examination of the crack path shows that the crack tends to propagate toward grains with lower twist angle and higher Schmid factor with an increase in R. The effect of R on FCP behavior was discussed from the microstructure perspective through a modified crystallographic model that considers the twist angle and the Schmid factor.",

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T1 - Investigation of fatigue crack propagation behavior of 5083 aluminum alloy under various stress ratios

T2 - Role of grain boundary and Schmid factor

AU - Ma, Mingyang

AU - Wang, Bing

AU - Liu, Huiqun

AU - Yi, Danqing

AU - Shen, Fanghua

AU - Zhai, Tongguang

PY - 2020/1/31

Y1 - 2020/1/31

N2 - The fatigue tolerance of 5083 aluminum (Al) alloy has attracted considerable research interest owing to its wide application in railway vehicle and shipbuilding industries. Thus, the fatigue crack propagation (FCP) behavior of this alloy is studied under various stress ratio (R) conditions. The results show that the higher R, the higher is FCP rate and the lower are threshold and fracture toughness. Microstructure examination of the crack path shows that the crack tends to propagate toward grains with lower twist angle and higher Schmid factor with an increase in R. The effect of R on FCP behavior was discussed from the microstructure perspective through a modified crystallographic model that considers the twist angle and the Schmid factor.

AB - The fatigue tolerance of 5083 aluminum (Al) alloy has attracted considerable research interest owing to its wide application in railway vehicle and shipbuilding industries. Thus, the fatigue crack propagation (FCP) behavior of this alloy is studied under various stress ratio (R) conditions. The results show that the higher R, the higher is FCP rate and the lower are threshold and fracture toughness. Microstructure examination of the crack path shows that the crack tends to propagate toward grains with lower twist angle and higher Schmid factor with an increase in R. The effect of R on FCP behavior was discussed from the microstructure perspective through a modified crystallographic model that considers the twist angle and the Schmid factor.

KW - 5083 aluminum alloy

KW - Fatigue crack propagation

KW - Schmid factor

KW - Stress ratio

KW - Twist angle

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DO - 10.1016/j.msea.2019.138871

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JO - Materials Science and Engineering: A

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M1 - 138871

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Investigation of fatigue crack propagation behavior of 5083 aluminum alloy under various stress ratios: Role of grain boundary and Schmid factor

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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