Maximizing the degree of rejuvenation in metallic glasses
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in: Scripta Materialia, Jahrgang 212.2022, Nr. 15 April, 114575, 15.04.2022.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Maximizing the degree of rejuvenation in metallic glasses
AU - Yuan, Xudong
AU - Şopu, Daniel
AU - Spieckermann, Florian
AU - Song, Kai Kai
AU - Ketov, Sergey V.
AU - Prashanth, Konda Gokuldoss
AU - Eckert, Jürgen
N1 - Publisher Copyright: © 2022 Acta Materialia Inc.
PY - 2022/4/15
Y1 - 2022/4/15
N2 - As the reverse process of relaxation, rejuvenation is the structural excitation process that can bring metallic glasses (MGs) to a higher energy state and usually increases their free volume. Here, using a dilution procedure conducted by randomly removing atoms from the modeled glass matrix, the degree of rejuvenation can be systematically controlled and the maximum rejuvenation threshold of MGs is identified. The structural relaxation is activated during the rejuvenation process and the dynamic balance between free volume creation and annihilation defines the rejuvenation ability of MGs. The highest degree of rejuvenation correlates to the flow strain of the materials and the structure is similar to that found in shear bands.
AB - As the reverse process of relaxation, rejuvenation is the structural excitation process that can bring metallic glasses (MGs) to a higher energy state and usually increases their free volume. Here, using a dilution procedure conducted by randomly removing atoms from the modeled glass matrix, the degree of rejuvenation can be systematically controlled and the maximum rejuvenation threshold of MGs is identified. The structural relaxation is activated during the rejuvenation process and the dynamic balance between free volume creation and annihilation defines the rejuvenation ability of MGs. The highest degree of rejuvenation correlates to the flow strain of the materials and the structure is similar to that found in shear bands.
KW - Metallic glasses
KW - Molecular dynamics simulations
KW - Rejuvenation
KW - Relaxation
UR - http://www.scopus.com/inward/record.url?scp=85123896422&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2022.114575
DO - 10.1016/j.scriptamat.2022.114575
M3 - Article
AN - SCOPUS:85123896422
VL - 212.2022
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - 15 April
M1 - 114575
ER -
