Nanoindentation studies on Cu-Ti-Zr-Ni-Si-Sn bulk metallic glasses

N. K. Mukhopadhyay; A. Belger; P. Paufler; D. H. Kim

doi:10.1016/j.msea.2006.02.258

Nanoindentation studies on Cu-Ti-Zr-Ni-Si-Sn bulk metallic glasses

N. K. Mukhopadhyay, A. Belger, P. Paufler, D. H. Kim

Department of Materials Science and Engineering

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

38 Citations (Scopus)

Abstract

In the present investigation, Cu₄₇Ti₃₃Ni₆Sn₂Si₁ (numbers indicate at.%) bulk metallic glass (BMG), fabricated by injection casting has been used for indentation experiments. Microindentation and nanoindentation tests were conducted to study the indentation responses of this material. The nanohardness and the Young's modulus were calculated following the standard procedure in literature. Around the indent, shear bands can be clearly observed under scanning electron microscopy examination. Atomic-force microscopy shows the pile of the material in a step-wise manner. The thinned sample near the indent shows the evolution of nanocrystals (∼20-30 nm) by transmission electron microscopy. During nanoindentation (in single- and multi-indent mode) experiments, the load-displacement P-h curves show displacement bursts, which are also known as pop-ins or serrations. The total displacement during indentation can be accounted for by sum total effect of the individual displacement of all the displacement-bursts observed in the P-h curve. Thus the plastic deformation of this glassy material appears to proceed in a discrete manner unlike ductile metallic alloys.

Original language	English
Pages (from-to)	954-957
Number of pages	4
Journal	Materials Science and Engineering A
Volume	449-451
DOIs	https://doi.org/10.1016/j.msea.2006.02.258
Publication status	Published - 2007 Mar 25

Bibliographical note

Funding Information:
The authors would like to thank Prof. S. Ranganathan, Prof. S. Lele and Prof. K. Chattopadhyay for useful discussions and Mrs. M. Reibold for her help in TEM investigation. One of the author (NKM) would like to thank Alexander von Humboldt Foundation, Germany for Research Fellowship during which a part of the work was completed. Partial support from Department of Science and Technology, India is gratefully acknowledged.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Nanoindentation studies on Cu-Ti-Zr-Ni-Si-Sn bulk metallic glasses",

abstract = "In the present investigation, Cu47Ti33Ni6Sn2Si1 (numbers indicate at.%) bulk metallic glass (BMG), fabricated by injection casting has been used for indentation experiments. Microindentation and nanoindentation tests were conducted to study the indentation responses of this material. The nanohardness and the Young's modulus were calculated following the standard procedure in literature. Around the indent, shear bands can be clearly observed under scanning electron microscopy examination. Atomic-force microscopy shows the pile of the material in a step-wise manner. The thinned sample near the indent shows the evolution of nanocrystals (∼20-30 nm) by transmission electron microscopy. During nanoindentation (in single- and multi-indent mode) experiments, the load-displacement P-h curves show displacement bursts, which are also known as pop-ins or serrations. The total displacement during indentation can be accounted for by sum total effect of the individual displacement of all the displacement-bursts observed in the P-h curve. Thus the plastic deformation of this glassy material appears to proceed in a discrete manner unlike ductile metallic alloys.",

author = "Mukhopadhyay, {N. K.} and A. Belger and P. Paufler and Kim, {D. H.}",

note = "Funding Information: The authors would like to thank Prof. S. Ranganathan, Prof. S. Lele and Prof. K. Chattopadhyay for useful discussions and Mrs. M. Reibold for her help in TEM investigation. One of the author (NKM) would like to thank Alexander von Humboldt Foundation, Germany for Research Fellowship during which a part of the work was completed. Partial support from Department of Science and Technology, India is gratefully acknowledged.",

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doi = "10.1016/j.msea.2006.02.258",

language = "English",

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AU - Mukhopadhyay, N. K.

AU - Belger, A.

AU - Paufler, P.

AU - Kim, D. H.

N1 - Funding Information: The authors would like to thank Prof. S. Ranganathan, Prof. S. Lele and Prof. K. Chattopadhyay for useful discussions and Mrs. M. Reibold for her help in TEM investigation. One of the author (NKM) would like to thank Alexander von Humboldt Foundation, Germany for Research Fellowship during which a part of the work was completed. Partial support from Department of Science and Technology, India is gratefully acknowledged.

PY - 2007/3/25

Y1 - 2007/3/25

N2 - In the present investigation, Cu47Ti33Ni6Sn2Si1 (numbers indicate at.%) bulk metallic glass (BMG), fabricated by injection casting has been used for indentation experiments. Microindentation and nanoindentation tests were conducted to study the indentation responses of this material. The nanohardness and the Young's modulus were calculated following the standard procedure in literature. Around the indent, shear bands can be clearly observed under scanning electron microscopy examination. Atomic-force microscopy shows the pile of the material in a step-wise manner. The thinned sample near the indent shows the evolution of nanocrystals (∼20-30 nm) by transmission electron microscopy. During nanoindentation (in single- and multi-indent mode) experiments, the load-displacement P-h curves show displacement bursts, which are also known as pop-ins or serrations. The total displacement during indentation can be accounted for by sum total effect of the individual displacement of all the displacement-bursts observed in the P-h curve. Thus the plastic deformation of this glassy material appears to proceed in a discrete manner unlike ductile metallic alloys.

AB - In the present investigation, Cu47Ti33Ni6Sn2Si1 (numbers indicate at.%) bulk metallic glass (BMG), fabricated by injection casting has been used for indentation experiments. Microindentation and nanoindentation tests were conducted to study the indentation responses of this material. The nanohardness and the Young's modulus were calculated following the standard procedure in literature. Around the indent, shear bands can be clearly observed under scanning electron microscopy examination. Atomic-force microscopy shows the pile of the material in a step-wise manner. The thinned sample near the indent shows the evolution of nanocrystals (∼20-30 nm) by transmission electron microscopy. During nanoindentation (in single- and multi-indent mode) experiments, the load-displacement P-h curves show displacement bursts, which are also known as pop-ins or serrations. The total displacement during indentation can be accounted for by sum total effect of the individual displacement of all the displacement-bursts observed in the P-h curve. Thus the plastic deformation of this glassy material appears to proceed in a discrete manner unlike ductile metallic alloys.

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Nanoindentation studies on Cu-Ti-Zr-Ni-Si-Sn bulk metallic glasses

Abstract

Bibliographical note

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