Fatigue-property enhancement of magnesium alloy, AZ31B, through equal-channel-angular pressing

Liang Wu; Grigoreta M. Stoica; Hao Hsiang Liao; Sean R. Agnew; E. Andrew Payzant; Gongyao Wang; Douglas E. Fielden; Lijia Chen; Peter K. Liaw

doi:10.1007/s11661-007-9123-8

Fatigue-property enhancement of magnesium alloy, AZ31B, through equal-channel-angular pressing

Liang Wu, Grigoreta M. Stoica, Hao Hsiang Liao, Sean R. Agnew, E. Andrew Payzant, Gongyao Wang, Douglas E. Fielden, Lijia Chen, Peter K. Liaw

Materials Engineering

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

32 Scopus citations

Abstract

The fatigue behavior of magnesium-alloy, AZ31B, prestrained by equal-channel-angular pressing (ECAP) was studied as a function of the accumulated plastic-strain level and the orientation of the samples (along and perpendicular to the ECAP pressing direction). The material was processed via route B_C, at 200 °C, for 1, 2, and 8 passes, with and without a back pressure (BP) applied on the billet during ECAP. The low-cycle fatigue behavior of the AZ31B alloy is shown to be anisotropic and texture dependent. Due to the initial texture orientation, the specimens loaded parallel to the ECAP pressing direction have a longer fatigue life than the samples loaded perpendicular to it. The low-cycle fatigue life of the AZ31B alloy is enhanced by ECAP. The fatigue-property improvement is discussed in light of the grain-size refinement, enhanced ductility, and texture evolution.

Original language	English
Pages (from-to)	2283-2289
Number of pages	7
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	38 A
Issue number	13
DOIs	https://doi.org/10.1007/s11661-007-9123-8
State	Published - Sep 2007

Funding

The authors are grateful for the financial support from (1) the University of Tennessee Scholarly Activities Research Incentive Fund (SARIF), (2) the Southeastern Universities Research Association (SURA), (3) the National Science Foundation-Combined Research-Curriculum Development Program (CRCD), under Grant No. EEC-9527527; (4) the National Science Foundation-Integrative Graduate Education and Research Training (IGERT) Program, under Grant No. DGE-9987548; and (5) the National Science Foundation-International Materials Institutes (IMI) Program, under Grant No. DMR-0231320. This research is sponsored, in part, by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Freedom-CAR and Vehicle Technologies, as part of the High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the United States Department of Energy under Contract No. DE-AC05-00OR22725. The authors also thank Dr. T.M. Lillo at the INL for preparing the initial ECAP-deformed billets.

Funders	Funder number
CRCD	EEC-9527527
IGERT	DGE-9987548
National Science Foundation-Combined Research-Curriculum Development Program
National Science Foundation-Integrative Graduate Education and Research Training
National Science Foundation-International Materials Institutes
Office of Freedom-CAR
SARIF
Southeastern Universities Research Association
University of Tennessee Scholarly Activities Research Incentive Fund
U.S. Department of Energy	DE-AC05-00OR22725
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
Innovative Medicines Initiative	DMR-0231320

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title = "Fatigue-property enhancement of magnesium alloy, AZ31B, through equal-channel-angular pressing",

abstract = "The fatigue behavior of magnesium-alloy, AZ31B, prestrained by equal-channel-angular pressing (ECAP) was studied as a function of the accumulated plastic-strain level and the orientation of the samples (along and perpendicular to the ECAP pressing direction). The material was processed via route BC, at 200 °C, for 1, 2, and 8 passes, with and without a back pressure (BP) applied on the billet during ECAP. The low-cycle fatigue behavior of the AZ31B alloy is shown to be anisotropic and texture dependent. Due to the initial texture orientation, the specimens loaded parallel to the ECAP pressing direction have a longer fatigue life than the samples loaded perpendicular to it. The low-cycle fatigue life of the AZ31B alloy is enhanced by ECAP. The fatigue-property improvement is discussed in light of the grain-size refinement, enhanced ductility, and texture evolution.",

author = "Liang Wu and Stoica, {Grigoreta M.} and Liao, {Hao Hsiang} and Agnew, {Sean R.} and Payzant, {E. Andrew} and Gongyao Wang and Fielden, {Douglas E.} and Lijia Chen and Liaw, {Peter K.}",

year = "2007",

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doi = "10.1007/s11661-007-9123-8",

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T1 - Fatigue-property enhancement of magnesium alloy, AZ31B, through equal-channel-angular pressing

AU - Wu, Liang

AU - Stoica, Grigoreta M.

AU - Liao, Hao Hsiang

AU - Agnew, Sean R.

AU - Payzant, E. Andrew

AU - Wang, Gongyao

AU - Fielden, Douglas E.

AU - Chen, Lijia

AU - Liaw, Peter K.

PY - 2007/9

Y1 - 2007/9

N2 - The fatigue behavior of magnesium-alloy, AZ31B, prestrained by equal-channel-angular pressing (ECAP) was studied as a function of the accumulated plastic-strain level and the orientation of the samples (along and perpendicular to the ECAP pressing direction). The material was processed via route BC, at 200 °C, for 1, 2, and 8 passes, with and without a back pressure (BP) applied on the billet during ECAP. The low-cycle fatigue behavior of the AZ31B alloy is shown to be anisotropic and texture dependent. Due to the initial texture orientation, the specimens loaded parallel to the ECAP pressing direction have a longer fatigue life than the samples loaded perpendicular to it. The low-cycle fatigue life of the AZ31B alloy is enhanced by ECAP. The fatigue-property improvement is discussed in light of the grain-size refinement, enhanced ductility, and texture evolution.

AB - The fatigue behavior of magnesium-alloy, AZ31B, prestrained by equal-channel-angular pressing (ECAP) was studied as a function of the accumulated plastic-strain level and the orientation of the samples (along and perpendicular to the ECAP pressing direction). The material was processed via route BC, at 200 °C, for 1, 2, and 8 passes, with and without a back pressure (BP) applied on the billet during ECAP. The low-cycle fatigue behavior of the AZ31B alloy is shown to be anisotropic and texture dependent. Due to the initial texture orientation, the specimens loaded parallel to the ECAP pressing direction have a longer fatigue life than the samples loaded perpendicular to it. The low-cycle fatigue life of the AZ31B alloy is enhanced by ECAP. The fatigue-property improvement is discussed in light of the grain-size refinement, enhanced ductility, and texture evolution.

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JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 13

ER -

Fatigue-property enhancement of magnesium alloy, AZ31B, through equal-channel-angular pressing

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