High temperature deformation in a lanthanum based bulk metallic glass showing a pronounced secondary relaxation

J. C. Qiao; J. M. Pelletier; J. J. Blandin; S. Gravier

doi:10.1016/j.msea.2013.07.080

High temperature deformation in a lanthanum based bulk metallic glass showing a pronounced secondary relaxation

J. C. Qiao, J. M. Pelletier, J. J. Blandin, S. Gravier

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

20 Scopus citations

Abstract

The deformation at high temperature of a La₆₀Ni₁₅Al₂₅ bulk metallic glass has been investigated. In the experimental domain in which homogeneous deformation could be obtained, activation energies in agreement with what is usually measured for metallic glasses with similar glass transition temperatures were identified but particularly large values of activation volumes were measured. Such values of activation volumes were attributed to the pronounced secondary relaxation displayed by the investigated glass, suggesting the existence of structural heterogeneities in the microstructure.

Original language	English
Pages (from-to)	57-61
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	586
DOIs	https://doi.org/10.1016/j.msea.2013.07.080
State	Published - 1 Dec 2013
Externally published	Yes

Keywords

Bulk amorphous alloys
Fracture
Mechanical characterization
Secondary relaxation
Superplasticity

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10.1016/j.msea.2013.07.080

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title = "High temperature deformation in a lanthanum based bulk metallic glass showing a pronounced secondary relaxation",

abstract = "The deformation at high temperature of a La60Ni15Al25 bulk metallic glass has been investigated. In the experimental domain in which homogeneous deformation could be obtained, activation energies in agreement with what is usually measured for metallic glasses with similar glass transition temperatures were identified but particularly large values of activation volumes were measured. Such values of activation volumes were attributed to the pronounced secondary relaxation displayed by the investigated glass, suggesting the existence of structural heterogeneities in the microstructure.",

keywords = "Bulk amorphous alloys, Fracture, Mechanical characterization, Secondary relaxation, Superplasticity",

author = "Qiao, {J. C.} and Pelletier, {J. M.} and Blandin, {J. J.} and S. Gravier",

year = "2013",

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doi = "10.1016/j.msea.2013.07.080",

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T1 - High temperature deformation in a lanthanum based bulk metallic glass showing a pronounced secondary relaxation

AU - Qiao, J. C.

AU - Pelletier, J. M.

AU - Blandin, J. J.

AU - Gravier, S.

PY - 2013/12/1

Y1 - 2013/12/1

N2 - The deformation at high temperature of a La60Ni15Al25 bulk metallic glass has been investigated. In the experimental domain in which homogeneous deformation could be obtained, activation energies in agreement with what is usually measured for metallic glasses with similar glass transition temperatures were identified but particularly large values of activation volumes were measured. Such values of activation volumes were attributed to the pronounced secondary relaxation displayed by the investigated glass, suggesting the existence of structural heterogeneities in the microstructure.

AB - The deformation at high temperature of a La60Ni15Al25 bulk metallic glass has been investigated. In the experimental domain in which homogeneous deformation could be obtained, activation energies in agreement with what is usually measured for metallic glasses with similar glass transition temperatures were identified but particularly large values of activation volumes were measured. Such values of activation volumes were attributed to the pronounced secondary relaxation displayed by the investigated glass, suggesting the existence of structural heterogeneities in the microstructure.

KW - Bulk amorphous alloys

KW - Fracture

KW - Mechanical characterization

KW - Secondary relaxation

KW - Superplasticity

UR - http://www.scopus.com/inward/record.url?scp=84883242838&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2013.07.080

DO - 10.1016/j.msea.2013.07.080

M3 - 文章

AN - SCOPUS:84883242838

SN - 0921-5093

VL - 586

SP - 57

EP - 61

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

High temperature deformation in a lanthanum based bulk metallic glass showing a pronounced secondary relaxation

Abstract

Keywords

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