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Title: Corrosion-fatigue studies of the Zr-based Vitreloy 105 bulk metallic glass

Abstract

The purpose of this study was to characterize the stress-life behavior of the Vitreloy 105 BMG alloy in the four-point bending configuration in a 0.6 M NaCl electrolyte. At high stress amplitudes, the corrosion-fatigue life was similar to the fatigue lives observed in air. The environment became increasingly detrimental with decreases in stress, and the corrosion-fatigue endurance limit decreased to about 50 MPa, an 88% decrease relative to testing in air. Similar to the tests conducted in air, oxide particles were found on the fracture surfaces but did not appear to significantly affect the corrosion-fatigue lives. However, wear and the resultant corrosion at the outer loading pins resulted in crack initiation in most of the samples. Thus, these results are considered conservative estimates of the corrosion-fatigue behavior of this BMG alloy. Monitoring of the samples and the open-circuit potentials revealed that the onset of significant crack growth occurred at an average of 92% of the total fatigue life. The mechanism of corrosion-fatigue degradation was found to be anodic dissolution.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2]
  1. ORNL
  2. University of Tennessee, Knoxville (UTK)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931856
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Science and Engineering A; Journal Volume: 467; Journal Issue: 1-2
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AIR; AMPLITUDES; BENDING; CONFIGURATION; CORROSION FATIGUE; CRACK PROPAGATION; DISSOLUTION; FRACTURES; MONITORING; OXIDES; TESTING; METALLIC GLASSES; ZIRCONIUM BASE ALLOYS

Citation Formats

Horton Jr, Joe A, Morrison, M. L., Buchanan, R. A., Liaw, Peter K, Green, B. A., and Wang, G Y. Corrosion-fatigue studies of the Zr-based Vitreloy 105 bulk metallic glass. United States: N. p., 2007. Web.
Horton Jr, Joe A, Morrison, M. L., Buchanan, R. A., Liaw, Peter K, Green, B. A., & Wang, G Y. Corrosion-fatigue studies of the Zr-based Vitreloy 105 bulk metallic glass. United States.
Horton Jr, Joe A, Morrison, M. L., Buchanan, R. A., Liaw, Peter K, Green, B. A., and Wang, G Y. Mon . "Corrosion-fatigue studies of the Zr-based Vitreloy 105 bulk metallic glass". United States. doi:.
@article{osti_931856,
title = {Corrosion-fatigue studies of the Zr-based Vitreloy 105 bulk metallic glass},
author = {Horton Jr, Joe A and Morrison, M. L. and Buchanan, R. A. and Liaw, Peter K and Green, B. A. and Wang, G Y},
abstractNote = {The purpose of this study was to characterize the stress-life behavior of the Vitreloy 105 BMG alloy in the four-point bending configuration in a 0.6 M NaCl electrolyte. At high stress amplitudes, the corrosion-fatigue life was similar to the fatigue lives observed in air. The environment became increasingly detrimental with decreases in stress, and the corrosion-fatigue endurance limit decreased to about 50 MPa, an 88% decrease relative to testing in air. Similar to the tests conducted in air, oxide particles were found on the fracture surfaces but did not appear to significantly affect the corrosion-fatigue lives. However, wear and the resultant corrosion at the outer loading pins resulted in crack initiation in most of the samples. Thus, these results are considered conservative estimates of the corrosion-fatigue behavior of this BMG alloy. Monitoring of the samples and the open-circuit potentials revealed that the onset of significant crack growth occurred at an average of 92% of the total fatigue life. The mechanism of corrosion-fatigue degradation was found to be anodic dissolution.},
doi = {},
journal = {Materials Science and Engineering A},
number = 1-2,
volume = 467,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}