Effect of shot-peening on the corrosion resistance of a Zr-based bulk metallic glass

Surfaces of bulk glassy Zr 59Ti 3Cu 20Al 10Ni 8 samples were shot-peened for different times and their corrosion behaviour was tested in 0.01 M Na 2SO 4 + xM NaCl ( x = 0; 0.01; 0.1) and 6 M HCl. Slight improvement of spontaneous passivity but a decrease of pitting resistance are detected with prolo...

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Bibliographic Details
Published in:Scripta materialia 2010-05, Vol.62 (9), p.635-638
Main Authors: Gebert, A., Concustell, A., Greer, A.L., Schultz, L., Eckert, J.
Format: Article
Language:English
Subjects:
Amorphous alloy
Bulk metallic glass
Corrosion
Corrosion resistance
Evolution
Metallic glasses
Passivity
Pitting (corrosion)
Shot peening
Surface modification
Zirconium base alloys
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Summary:Surfaces of bulk glassy Zr 59Ti 3Cu 20Al 10Ni 8 samples were shot-peened for different times and their corrosion behaviour was tested in 0.01 M Na 2SO 4 + xM NaCl ( x = 0; 0.01; 0.1) and 6 M HCl. Slight improvement of spontaneous passivity but a decrease of pitting resistance are detected with prolonged shot-peening duration. The corrosion damage evolution is governed by the nature of the mechanically generated defects and their surrounding stress fields.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2010.01.004