Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature

Bai, J.; Li, J. S.; Qiao, J. W.; Wang, J.; Feng, R.; Kou, H. C.; Liaw, P. K.

doi:10.1038/srep32287

Title: Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature

Abstract

Remarkable tensile ductility was first obtained in an in-situ Ti-based bulk metallic glass (BMG) composite at cryogenic temperature (77 K). The novel cryogenic tensile plasticity is related to the effective accommodation of ductile body-centered cubic dendrites at 77 K, characteristic of the prevailing slip bands and dislocations, as well as lattice disorder, which can effectively hinder the propagation of critical shear bands. The greatly increased yield strength of dendrites contributes to the high yield strength of composite at 77 K. A trend of stronger softening is observed at low temperature, and a criterion is proposed to understand the softening behavior. In conclusion, the current research could also provide a guidance to the promising cryogenic application of these new advanced BMG composites.

Authors:

Bai, J. ^[1]; Li, J. S. ^[2]; Qiao, J. W. ^[3]; Wang, J. ^[2]; Feng, R. ^[4]; Kou, H. C. ^[2]; Liaw, P. K. ^[4]

Northwest Polytechnical Univ., Xi'an (China); Univ. of Tennessee, Knoxville, TN (United States)
Northwest Polytechnical Univ., Xi'an (China)
Taiyuan Univ. of Technology, Taiyuan (China)
Univ. of Tennessee, Knoxville, TN (United States)

Publication Date:: Wed Aug 31 00:00:00 EDT 2016

Research Org.:: Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Org.:: USDOE Office of Fossil Energy (FE)

OSTI Identifier:: 1361391

Grant/Contract Number:: FE0008855

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 6; Journal Issue: 1; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; composite; glasses; mechanical properties

Citation Formats


                    Bai, J., Li, J. S., Qiao, J. W., Wang, J., Feng, R., Kou, H. C., and Liaw, P. K. Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature.  United States: N. p., 2016. 
Web.  doi:10.1038/srep32287.

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                    Bai, J., Li, J. S., Qiao, J. W., Wang, J., Feng, R., Kou, H. C., & Liaw, P. K. Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature.  United States.  https://doi.org/10.1038/srep32287

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                    Bai, J., Li, J. S., Qiao, J. W., Wang, J., Feng, R., Kou, H. C., and Liaw, P. K. Wed .  
"Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature".  United States.  https://doi.org/10.1038/srep32287.  https://www.osti.gov/servlets/purl/1361391.

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@article{osti_1361391,

  title        = {Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature},

  author       = {Bai, J. and Li, J. S. and Qiao, J. W. and Wang, J. and Feng, R. and Kou, H. C. and Liaw, P. K.},

  abstractNote = {Remarkable tensile ductility was first obtained in an in-situ Ti-based bulk metallic glass (BMG) composite at cryogenic temperature (77 K). The novel cryogenic tensile plasticity is related to the effective accommodation of ductile body-centered cubic dendrites at 77 K, characteristic of the prevailing slip bands and dislocations, as well as lattice disorder, which can effectively hinder the propagation of critical shear bands. The greatly increased yield strength of dendrites contributes to the high yield strength of composite at 77 K. A trend of stronger softening is observed at low temperature, and a criterion is proposed to understand the softening behavior. In conclusion, the current research could also provide a guidance to the promising cryogenic application of these new advanced BMG composites.},

  doi          = {10.1038/srep32287},

  journal      = {Scientific Reports},

  number       = 1,

  volume       = 6,

  place        = {United States},

  year         = {Wed Aug 31 00:00:00 EDT 2016},

  month        = {Wed Aug 31 00:00:00 EDT 2016}

}

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Title: Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature

Abstract

Citation Formats

Two-phase quasi-equilibrium in β-type Ti-based bulk metallic glass composites journal, January 2016

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Transformation-mediated ductility in CuZr-based bulk metallic glasses journal, May 2010

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