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Title: Fatigue-Property Enhancements of Magnesium Alloy, AZ31B, through Equal-Channel-Angular Pressing (ECAP)

Abstract

The fatigue behavior of magnesium-alloy, AZ31B, pre-strained 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 parallel to the ECAP pressing direction). The material was processed via route BC, at 200 oC, for 1, 2, and 8 passes, with and without a back-pressure 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 the light of the grain-size refinement, enhanced ductility, and texture evolution.

Authors:
 [1];  [2];  [2];  [3];  [1];  [1];  [1];  [4];  [2]
  1. ORNL
  2. University of Tennessee, Knoxville (UTK)
  3. University of Virginia
  4. Shenyang University of Technology
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Temperature Materials Laboratory
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
931658
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Metallurgical and Materials Transactions A; Journal Volume: 38A; Journal Issue: 13
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; DUCTILITY; GRAIN SIZE; MAGNESIUM ALLOYS; ORIENTATION; PRESSING; TEXTURE; Magnesium alloy; AZ31B; Equal-Channel-Angular Pressing (ECAP); Fatigue

Citation Formats

Wu, Liang, Stoica, G. M., Liao, Hao Hsiang, Agnew, Sean R, Payzant, E Andrew, Wang, Gongyao, Fielden, Douglas, Chen, Lijia, and Liaw, Peter K. Fatigue-Property Enhancements of Magnesium Alloy, AZ31B, through Equal-Channel-Angular Pressing (ECAP). United States: N. p., 2007. Web. doi:10.1007/s11661-007-9123-8.
Wu, Liang, Stoica, G. M., Liao, Hao Hsiang, Agnew, Sean R, Payzant, E Andrew, Wang, Gongyao, Fielden, Douglas, Chen, Lijia, & Liaw, Peter K. Fatigue-Property Enhancements of Magnesium Alloy, AZ31B, through Equal-Channel-Angular Pressing (ECAP). United States. doi:10.1007/s11661-007-9123-8.
Wu, Liang, Stoica, G. M., Liao, Hao Hsiang, Agnew, Sean R, Payzant, E Andrew, Wang, Gongyao, Fielden, Douglas, Chen, Lijia, and Liaw, Peter K. Mon . "Fatigue-Property Enhancements of Magnesium Alloy, AZ31B, through Equal-Channel-Angular Pressing (ECAP)". United States. doi:10.1007/s11661-007-9123-8.
@article{osti_931658,
title = {Fatigue-Property Enhancements of Magnesium Alloy, AZ31B, through Equal-Channel-Angular Pressing (ECAP)},
author = {Wu, Liang and Stoica, G. M. and Liao, Hao Hsiang and Agnew, Sean R and Payzant, E Andrew and Wang, Gongyao and Fielden, Douglas and Chen, Lijia and Liaw, Peter K},
abstractNote = {The fatigue behavior of magnesium-alloy, AZ31B, pre-strained 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 parallel to the ECAP pressing direction). The material was processed via route BC, at 200 oC, for 1, 2, and 8 passes, with and without a back-pressure 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 the light of the grain-size refinement, enhanced ductility, and texture evolution.},
doi = {10.1007/s11661-007-9123-8},
journal = {Metallurgical and Materials Transactions A},
number = 13,
volume = 38A,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}