Nanoindentation response of laser shock peened Ti-based bulk metallic glass

Liang Wang; Lu Wang; Yunfei Xue; Haifeng Zhang; Huameng Fu

doi:10.1063/1.4921898

Nanoindentation response of laser shock peened Ti-based bulk metallic glass

Liang Wang, Lu Wang, Yunfei Xue^*, Haifeng Zhang, Huameng Fu

^*Corresponding author for this work

School of Material Science and Engineering

CAS - Institute of Metal Research

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

17 Citations (Scopus)

Abstract

The effect of laser shock peening (LSP) on mechanical properties of Ti-based bulk metallic glass (BMG) was investigated under nanoindentation. Two regions were generated within the specimen after the LSP: (I) the extremely thick softened region (∼300 μm) in which amounts of shear bands and excess free volume were generated; (II) the middle region where the free volume increased but nearly no shear bands were induced. The hardness decreased with the increase of the indenter depth (h), exhibiting indentation size effect (ISE). The ISE increased with the increase of the measured distance away from the laser shocked tip, indicating that the ISE was inhibited by the shear bands and excess free volume was generated by the LSP.

Original language	English
Article number	057156
Journal	AIP Advances
Volume	5
Issue number	5
DOIs	https://doi.org/10.1063/1.4921898
Publication status	Published - 1 May 2015

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abstract = "The effect of laser shock peening (LSP) on mechanical properties of Ti-based bulk metallic glass (BMG) was investigated under nanoindentation. Two regions were generated within the specimen after the LSP: (I) the extremely thick softened region (∼300 μm) in which amounts of shear bands and excess free volume were generated; (II) the middle region where the free volume increased but nearly no shear bands were induced. The hardness decreased with the increase of the indenter depth (h), exhibiting indentation size effect (ISE). The ISE increased with the increase of the measured distance away from the laser shocked tip, indicating that the ISE was inhibited by the shear bands and excess free volume was generated by the LSP.",

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AU - Wang, Liang

AU - Wang, Lu

AU - Xue, Yunfei

AU - Zhang, Haifeng

AU - Fu, Huameng

PY - 2015/5/1

Y1 - 2015/5/1

N2 - The effect of laser shock peening (LSP) on mechanical properties of Ti-based bulk metallic glass (BMG) was investigated under nanoindentation. Two regions were generated within the specimen after the LSP: (I) the extremely thick softened region (∼300 μm) in which amounts of shear bands and excess free volume were generated; (II) the middle region where the free volume increased but nearly no shear bands were induced. The hardness decreased with the increase of the indenter depth (h), exhibiting indentation size effect (ISE). The ISE increased with the increase of the measured distance away from the laser shocked tip, indicating that the ISE was inhibited by the shear bands and excess free volume was generated by the LSP.

AB - The effect of laser shock peening (LSP) on mechanical properties of Ti-based bulk metallic glass (BMG) was investigated under nanoindentation. Two regions were generated within the specimen after the LSP: (I) the extremely thick softened region (∼300 μm) in which amounts of shear bands and excess free volume were generated; (II) the middle region where the free volume increased but nearly no shear bands were induced. The hardness decreased with the increase of the indenter depth (h), exhibiting indentation size effect (ISE). The ISE increased with the increase of the measured distance away from the laser shocked tip, indicating that the ISE was inhibited by the shear bands and excess free volume was generated by the LSP.

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Nanoindentation response of laser shock peened Ti-based bulk metallic glass

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