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


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
Publication size in sheets0.3
Languageen angielski
Score (nominal)35
ScoreMinisterial score [Punktacja MNiSW] = 35.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) [Punktacja MNiSW (2013-2016)] = 35.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2014 = 3.736 (2) - 2014=3.583 (5)
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