Role of initial {1 0 -1 2} twin in the fatigue behavior of rolled Mg-3Al-1Zn alloy

Sung Hyuk Park; Seong Gu Hong; Chong Soo Lee

doi:10.1016/j.scriptamat.2010.01.021

Role of initial {1 0 -1 2} twin in the fatigue behavior of rolled Mg-3Al-1Zn alloy

Sung Hyuk Park
, Seong Gu Hong
, Chong Soo Lee

Korea Research Institute of Standards and Science
Pohang University of Science and Technology

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

64 Scopus citations

Abstract

Initial {1 0 -1 2} twin influenced the plastic deformation mechanism activated during fatigue deformation, especially during compressive loading, by enhancing the activity of the detwinning mechanism. With the aid of initial {1 0 -1 2} twin, compressive deformation could be fully accommodated by detwinning alone. This change in the predominant plastic deformation mechanism during compressive loading significantly decreased compressive flow stress, causing an increase in mean stress, and thus deteriorated the fatigue resistance of the material.

Original language	English
Pages (from-to)	666-669
Number of pages	4
Journal	Scripta Materialia
Volume	62
Issue number	9
DOIs	https://doi.org/10.1016/j.scriptamat.2010.01.021
State	Published - May 2010

Keywords

Initial {1 0 -1 2} twin
Low-cycle fatigue
Magnesium alloy
Mean stress
{1 0 -1 2} twinning-detwinning

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10.1016/j.scriptamat.2010.01.021

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abstract = "Initial \{1 0 -1 2\} twin influenced the plastic deformation mechanism activated during fatigue deformation, especially during compressive loading, by enhancing the activity of the detwinning mechanism. With the aid of initial \{1 0 -1 2\} twin, compressive deformation could be fully accommodated by detwinning alone. This change in the predominant plastic deformation mechanism during compressive loading significantly decreased compressive flow stress, causing an increase in mean stress, and thus deteriorated the fatigue resistance of the material.",

keywords = "Initial \{1 0 -1 2\} twin, Low-cycle fatigue, Magnesium alloy, Mean stress, \{1 0 -1 2\} twinning-detwinning",

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AU - Park, Sung Hyuk

AU - Hong, Seong Gu

AU - Lee, Chong Soo

PY - 2010/5

Y1 - 2010/5

N2 - Initial {1 0 -1 2} twin influenced the plastic deformation mechanism activated during fatigue deformation, especially during compressive loading, by enhancing the activity of the detwinning mechanism. With the aid of initial {1 0 -1 2} twin, compressive deformation could be fully accommodated by detwinning alone. This change in the predominant plastic deformation mechanism during compressive loading significantly decreased compressive flow stress, causing an increase in mean stress, and thus deteriorated the fatigue resistance of the material.

AB - Initial {1 0 -1 2} twin influenced the plastic deformation mechanism activated during fatigue deformation, especially during compressive loading, by enhancing the activity of the detwinning mechanism. With the aid of initial {1 0 -1 2} twin, compressive deformation could be fully accommodated by detwinning alone. This change in the predominant plastic deformation mechanism during compressive loading significantly decreased compressive flow stress, causing an increase in mean stress, and thus deteriorated the fatigue resistance of the material.

KW - Initial {1 0 -1 2} twin

KW - Low-cycle fatigue

KW - Magnesium alloy

KW - Mean stress

KW - {1 0 -1 2} twinning-detwinning

UR - https://www.scopus.com/pages/publications/77049123171

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JO - Scripta Materialia

JF - Scripta Materialia

IS - 9

ER -

Role of initial {1 0 -1 2} twin in the fatigue behavior of rolled Mg-3Al-1Zn alloy

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Keywords

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