Atomic-level mechanism of elastic deformation in the Zr-Cu metallic glass

Jerzy Antonowicz , Anna Pietnoczka , G.a. Evangelakis , O. Mathon , I. Kantor , S. Pascarelli , Aras Kartouzian , T. Shinmei , T. Irifune

Abstract

To explore the microscopic response of a metallic glass (MG) to an applied hydrostatic load we performed a high-pressure extended x-ray absorption fine structure (EXAFS) study of the Zr66.7Cu33.3 amorphous alloy. EXAFS fitting revealed that on compression, Zr-Zr pairs are strained preferentially. Strong Zr-Cu interactions contribute to the stiffness of dominant Cu-centered clusters and the overall compressibility of the MG is mostly determined by the softer bonds between the Zr atoms belonging to the clusters' outer shell. Stress accommodation is accompanied by a variation of bonding preferences, which is consistent with the observed hierarchy of elastic constants of different atomic pairs.
Author Jerzy Antonowicz ZP
Jerzy Antonowicz,,
- Semiconductors Division
, Anna Pietnoczka ZP
Anna Pietnoczka,,
- Semiconductors Division
, G.a. Evangelakis
G.a. Evangelakis,,
-
, O. Mathon
O. Mathon,,
-
, I. Kantor
I. Kantor,,
-
, S. Pascarelli
S. Pascarelli,,
-
, Aras Kartouzian
Aras Kartouzian,,
-
, T. Shinmei
T. Shinmei,,
-
, T. Irifune
T. Irifune,,
-
Journal seriesPhysical Review B, ISSN 1098-0121
Issue year2016
Vol93
No14
Pages144115-1-5
Publication size in sheets0.3
DOIDOI:10.1103/PhysRevB.93.144115
URL http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.144115
Languageen angielski
Score (nominal)35
ScoreMinisterial score = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2014 = 3.736 (2) - 2014=3.583 (5)
Citation count*0
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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