Deformation feature and properties of Zr based bulk metallic glass treated by laser shock peening

Laser shock peening is promising surface treatment technique to improve the mechanical properties of metals material through introducing a deep compressive residual stresses region. In this work, LSP was employed to treat Zr based bulk metallic glasses (BMGs). In contrast to the work softening in BM...

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Bibliographic Details
Published in:Materials research innovations 2014-07, Vol.18 (sup4), p.S4-798-S4-802
Main Authors: Xu, G. Y., Wei, Y. P., Wei, B. C.
Format: Article
Language:English
Subjects:
Amorphous materials
Compressive properties
Deformation
Hardening
Laser shock peening
Laser shock processing
Metallic glasses
Peening
Plastic deformation
Residual stress
Vickers hardness
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Summary:Laser shock peening is promising surface treatment technique to improve the mechanical properties of metals material through introducing a deep compressive residual stresses region. In this work, LSP was employed to treat Zr based bulk metallic glasses (BMGs). In contrast to the work softening in BMGs, laser shock peened BMG shows significant hardening in the plastic deformed region. Furthermore, the plastic deformation region exhibits unique deformation features, which is dependent on the thickness of the samples. The deformation morphology under the impacted region was also studied. The mechanism for the hardening and formation of unique deformation features is discussed.
ISSN:1432-8917
1433-075X
DOI:10.1179/1432891714Z.000000000783