Effect of anisotropy on the low-cycle fatigue behavior of rolled AZ31 magnesium alloy

Sung Hyuk Park; Seong Gu Hong; Wonkyu Bang; Chong Soo Lee

doi:10.1016/j.msea.2009.08.044

Effect of anisotropy on the low-cycle fatigue behavior of rolled AZ31 magnesium alloy

Sung Hyuk Park
, Seong Gu Hong
, Wonkyu Bang
, Chong Soo Lee

Korea Research Institute of Standards and Science
Research Institute of Industrial Science & Technology, Pohang
Pohang University of Science and Technology

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

123 Scopus citations

Abstract

Low-cycle fatigue (LCF) tests were carried out to investigate the effect of anisotropy on the fatigue resistance of rolled AZ31 magnesium (Mg) alloy. The alloy showed a strong basal texture indicating that most of the basal planes of hexagonal close-packed lattice were located parallel to the rolling direction. Specimens loaded parallel to the rolling direction (RD) were easy to yield in compression, while those loaded normal to the rolled plane (ND) were easily yielded in tension by twinning. This anisotropy caused superior fatigue resistance of ND specimen by introducing the beneficial compressive mean stress. An energy-based model considering the effect of the mean stress was used for the prediction of fatigue life and the predicted results showed a good agreement with experimental data.

Original language	English
Pages (from-to)	417-423
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	527
Issue number	3
DOIs	https://doi.org/10.1016/j.msea.2009.08.044
State	Published - 15 Jan 2010

Keywords

Anisotropy
AZ31 magnesium alloy
Low-cycle fatigue
Mean stress
Twinning

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10.1016/j.msea.2009.08.044

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title = "Effect of anisotropy on the low-cycle fatigue behavior of rolled AZ31 magnesium alloy",

abstract = "Low-cycle fatigue (LCF) tests were carried out to investigate the effect of anisotropy on the fatigue resistance of rolled AZ31 magnesium (Mg) alloy. The alloy showed a strong basal texture indicating that most of the basal planes of hexagonal close-packed lattice were located parallel to the rolling direction. Specimens loaded parallel to the rolling direction (RD) were easy to yield in compression, while those loaded normal to the rolled plane (ND) were easily yielded in tension by twinning. This anisotropy caused superior fatigue resistance of ND specimen by introducing the beneficial compressive mean stress. An energy-based model considering the effect of the mean stress was used for the prediction of fatigue life and the predicted results showed a good agreement with experimental data.",

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T1 - Effect of anisotropy on the low-cycle fatigue behavior of rolled AZ31 magnesium alloy

AU - Park, Sung Hyuk

AU - Hong, Seong Gu

AU - Bang, Wonkyu

AU - Lee, Chong Soo

PY - 2010/1/15

Y1 - 2010/1/15

N2 - Low-cycle fatigue (LCF) tests were carried out to investigate the effect of anisotropy on the fatigue resistance of rolled AZ31 magnesium (Mg) alloy. The alloy showed a strong basal texture indicating that most of the basal planes of hexagonal close-packed lattice were located parallel to the rolling direction. Specimens loaded parallel to the rolling direction (RD) were easy to yield in compression, while those loaded normal to the rolled plane (ND) were easily yielded in tension by twinning. This anisotropy caused superior fatigue resistance of ND specimen by introducing the beneficial compressive mean stress. An energy-based model considering the effect of the mean stress was used for the prediction of fatigue life and the predicted results showed a good agreement with experimental data.

AB - Low-cycle fatigue (LCF) tests were carried out to investigate the effect of anisotropy on the fatigue resistance of rolled AZ31 magnesium (Mg) alloy. The alloy showed a strong basal texture indicating that most of the basal planes of hexagonal close-packed lattice were located parallel to the rolling direction. Specimens loaded parallel to the rolling direction (RD) were easy to yield in compression, while those loaded normal to the rolled plane (ND) were easily yielded in tension by twinning. This anisotropy caused superior fatigue resistance of ND specimen by introducing the beneficial compressive mean stress. An energy-based model considering the effect of the mean stress was used for the prediction of fatigue life and the predicted results showed a good agreement with experimental data.

KW - Anisotropy

KW - AZ31 magnesium alloy

KW - Low-cycle fatigue

KW - Mean stress

KW - Twinning

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DO - 10.1016/j.msea.2009.08.044

M3 - Article

AN - SCOPUS:71849115394

SN - 0921-5093

VL - 527

SP - 417

EP - 423

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 3

ER -

Effect of anisotropy on the low-cycle fatigue behavior of rolled AZ31 magnesium alloy

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Keywords

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