TY - JOUR
T1 - On cryothermal cycling as a method for inducing structural changes in metallic glasses
AU - Ketov, Sergey V.
AU - Trifonov, Artem S.
AU - Ivanov, Yurii P.
AU - Churyumov, Alexander Yu
AU - Lubenchenko, Alexander V.
AU - Batrakov, Alexander A.
AU - Jiang, Jing
AU - Louzguine-Luzgin, Dmitri V.
AU - Eckert, Jurgen
AU - Orava, Jiri
AU - Greer, Alan Lindsay
N1 - Funding Information:
This work was supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan, by JSPS KAKENHI Grant Number #16K18244 and by the Ministry of Education Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS” (№ К2–2014–013 and К2-2017-089). Additional support through the European Research Council under the ERC Advanced Grant INTELHYB (grant ERC-2013-ADG-340025) is gratefully acknowledged. We also thank Prof. A. Chuvilin for technical support with the TEM experiments.
Publisher Copyright:
© The Author(s) 2018.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - The influence of cryothermal treatment on the mechanical properties of metallic glasses with different compositions was investigated in the present work. It was found that cryothermal cycling can induce rejuvenation as well as relaxation of the metallic glasses. The local apparent Young's modulus and its spatial distribution width on the surface of the metallic glass increase after cryothermal cycling, while in the bulk the effect depends on the glass composition. It appeared that this increase is temporary and disappears after a period of room temperature aging. This effect is connected with a large distribution of relaxation times in the metallic glasses due to their heterogeneous structure and the formation of complex native oxides on the outer surfaces of the glasses. Our findings reveal that a cryothermal cycling treatment can improve or degrade the plasticity of a metallic glass, and the atomic bond structure appears to be very important for the outcome of the treatment.
AB - The influence of cryothermal treatment on the mechanical properties of metallic glasses with different compositions was investigated in the present work. It was found that cryothermal cycling can induce rejuvenation as well as relaxation of the metallic glasses. The local apparent Young's modulus and its spatial distribution width on the surface of the metallic glass increase after cryothermal cycling, while in the bulk the effect depends on the glass composition. It appeared that this increase is temporary and disappears after a period of room temperature aging. This effect is connected with a large distribution of relaxation times in the metallic glasses due to their heterogeneous structure and the formation of complex native oxides on the outer surfaces of the glasses. Our findings reveal that a cryothermal cycling treatment can improve or degrade the plasticity of a metallic glass, and the atomic bond structure appears to be very important for the outcome of the treatment.
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U2 - 10.1038/s41427-018-0019-4
DO - 10.1038/s41427-018-0019-4
M3 - Article
AN - SCOPUS:85045146674
SN - 1884-4049
VL - 10
SP - 137
EP - 145
JO - NPG Asia Materials
JF - NPG Asia Materials
IS - 4
ER -