Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid

Jaiswal, Abhishek; Podlesynak, Andrey; Ehlers, Georg; Mills, Rebecca; O'Keeffe, Stephanie; Stevick, Joseph; Kempton, James; Jelbert, Glenton; Dmowski, Wojciech; Lokshin, Konstantin; Egami, Takeshi; Zhang, Yang

doi:10.1103/PhysRevB.92.024202

Title: Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid

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Abstract

The study of multicomponent metallic liquids' relaxational behavior is still the key to understanding and improving the glass-forming abilities of bulk metallic glasses. Here, we report measurements of the collective relaxation times in a melted bulk metallic glass (LM601Zr₅₁Cu₃₆Ni₄Al₉) in the kinetic regime (Q: 1.5–4.0Å^–1) using quasielastic neutron scattering. The results reveal an unusual slope change in the Angell plots of this metallic liquid's collective relaxation time around 950°C, beyond the material's melting point. Measurement of specific heat capacity also reveals a peak around the same temperature. Adams-Gibbs theory is used to rationalize the coincidence, which motivates more careful experimental and computational studies of the metallic liquids in the future.

Authors:

Jaiswal, Abhishek ^[1]; Podlesynak, Andrey ^[2]; Ehlers, Georg ^[2]; Mills, Rebecca ^[2]; O'Keeffe, Stephanie ^[3]; Stevick, Joseph ^[3]; Kempton, James ^[3]; Jelbert, Glenton ^[3]; Dmowski, Wojciech ^[4]; Lokshin, Konstantin ^[4]; Egami, Takeshi ^[4]; Zhang, Yang ^[1]

Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Liquidmetal Technologies, Rancho Santa Margarita, CA (United States)
Univ. of Tennessee, Knoxville, TN (United States)

Publication Date:: Tue Jul 21 00:00:00 EDT 2015

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1207052

Alternate Identifier(s):: OSTI ID: 1198712

Grant/Contract Number:: AC05-00OR22725; NRC-HQ-12-G-38-0072; RB14187

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 92; Journal Issue: 2; Journal ID: ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Jaiswal, Abhishek, Podlesynak, Andrey, Ehlers, Georg, Mills, Rebecca, O'Keeffe, Stephanie, Stevick, Joseph, Kempton, James, Jelbert, Glenton, Dmowski, Wojciech, Lokshin, Konstantin, Egami, Takeshi, and Zhang, Yang. Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevB.92.024202.

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                    Jaiswal, Abhishek, Podlesynak, Andrey, Ehlers, Georg, Mills, Rebecca, O'Keeffe, Stephanie, Stevick, Joseph, Kempton, James, Jelbert, Glenton, Dmowski, Wojciech, Lokshin, Konstantin, Egami, Takeshi, & Zhang, Yang. Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid.  United States.  https://doi.org/10.1103/PhysRevB.92.024202

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                    Jaiswal, Abhishek, Podlesynak, Andrey, Ehlers, Georg, Mills, Rebecca, O'Keeffe, Stephanie, Stevick, Joseph, Kempton, James, Jelbert, Glenton, Dmowski, Wojciech, Lokshin, Konstantin, Egami, Takeshi, and Zhang, Yang. Tue .  
"Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid".  United States.  https://doi.org/10.1103/PhysRevB.92.024202.  https://www.osti.gov/servlets/purl/1207052.

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@article{osti_1207052,

  title        = {Coincidence of collective relaxation anomaly and specific heat peak in a bulk metallic glass-forming liquid},

  author       = {Jaiswal, Abhishek and Podlesynak, Andrey and Ehlers, Georg and Mills, Rebecca and O'Keeffe, Stephanie and Stevick, Joseph and Kempton, James and Jelbert, Glenton and Dmowski, Wojciech and Lokshin, Konstantin and Egami, Takeshi and Zhang, Yang},

  abstractNote = {The study of multicomponent metallic liquids' relaxational behavior is still the key to understanding and improving the glass-forming abilities of bulk metallic glasses. Here, we report measurements of the collective relaxation times in a melted bulk metallic glass (LM601Zr51Cu36Ni4Al9) in the kinetic regime (Q: 1.5–4.0Å–1) using quasielastic neutron scattering. The results reveal an unusual slope change in the Angell plots of this metallic liquid's collective relaxation time around 950°C, beyond the material's melting point. Measurement of specific heat capacity also reveals a peak around the same temperature. Adams-Gibbs theory is used to rationalize the coincidence, which motivates more careful experimental and computational studies of the metallic liquids in the future.},

  doi          = {10.1103/PhysRevB.92.024202},

  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  number       = 2,

  volume       = 92,

  place        = {United States},

  year         = {Tue Jul 21 00:00:00 EDT 2015},

  month        = {Tue Jul 21 00:00:00 EDT 2015}

}

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