Temperature dependence of the thermoplastic formability in bulk metallic glasses

E. Bryn Pitt; Golden Kumar; Jan Schroers

doi:10.1063/1.3624666

Temperature dependence of the thermoplastic formability in bulk metallic glasses

E. Bryn Pitt
, Golden Kumar
, Jan Schroers

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

58 Scopus citations

Abstract

The temperature dependence of the maximum strain a bulk metallic glass (BMG) can undergo in its supercooled liquid state under specified conditions is determined. This formability is measured experimentally over a wide temperature range using Zr₃₅Ti₃₀Cu_8.25Be_26.75 as an example BMG. When considering five different BMG formers, we found that the formability continuously increases with temperature. This behavior is ubiquitous among BMGs whose crystallization behavior can be described by steady state nucleation and diffusion limited growth. Therefore, in order to maximize the formability during thermoplastic forming of BMGs, the highest processing temperature should be chosen at which crystallization can still be avoided.

Original language	English
Article number	043518
Journal	Journal of Applied Physics
Volume	110
Issue number	4
DOIs	https://doi.org/10.1063/1.3624666
State	Published - Aug 15 2011
Externally published	Yes

Funding

The work was supported by U.S. National Science Foundation through Grant No. NSF CMMI (MPM#0826445).

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10.1063/1.3624666

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title = "Temperature dependence of the thermoplastic formability in bulk metallic glasses",

abstract = "The temperature dependence of the maximum strain a bulk metallic glass (BMG) can undergo in its supercooled liquid state under specified conditions is determined. This formability is measured experimentally over a wide temperature range using Zr35Ti30Cu8.25Be26.75 as an example BMG. When considering five different BMG formers, we found that the formability continuously increases with temperature. This behavior is ubiquitous among BMGs whose crystallization behavior can be described by steady state nucleation and diffusion limited growth. Therefore, in order to maximize the formability during thermoplastic forming of BMGs, the highest processing temperature should be chosen at which crystallization can still be avoided.",

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AU - Kumar, Golden

AU - Schroers, Jan

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AB - The temperature dependence of the maximum strain a bulk metallic glass (BMG) can undergo in its supercooled liquid state under specified conditions is determined. This formability is measured experimentally over a wide temperature range using Zr35Ti30Cu8.25Be26.75 as an example BMG. When considering five different BMG formers, we found that the formability continuously increases with temperature. This behavior is ubiquitous among BMGs whose crystallization behavior can be described by steady state nucleation and diffusion limited growth. Therefore, in order to maximize the formability during thermoplastic forming of BMGs, the highest processing temperature should be chosen at which crystallization can still be avoided.

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Temperature dependence of the thermoplastic formability in bulk metallic glasses

Abstract

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