TY - JOUR
T1 - Low-temperature relaxation behavior of a bulk metallic glass leading to improvement of both strength and plasticity
AU - Louzguine-Luzgin, Dmitri V.
AU - Jiang, Jing
N1 - Funding Information:
The authors sincerely thank Mr. Hayasaka from the Microscopy center of Tohoku University for TEM EDX mapping and a chemical analysis laboratory of the Institute for Materials Research for the analysis of O content.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/4/6
Y1 - 2022/4/6
N2 - Low temperature relaxation and structural changes in a Cu36Zr48Al8Ag8 bulk glassy alloy well below the glass-transition temperature are examined by using differential scanning calorimetry, X-ray diffractometry, scanning and transmission electron microscopy. Although densification of the sample takes place owing to beginning of structural relaxation both room-temperature mechanical strength and plasticity values are increased. The studied samples exhibited an inverse relationship between compressive strength and hardness. However, no clear structural changes in terms of crystallization or phase separation are observed. The results are interpreted in terms of both structural relaxation and release of internal stresses.
AB - Low temperature relaxation and structural changes in a Cu36Zr48Al8Ag8 bulk glassy alloy well below the glass-transition temperature are examined by using differential scanning calorimetry, X-ray diffractometry, scanning and transmission electron microscopy. Although densification of the sample takes place owing to beginning of structural relaxation both room-temperature mechanical strength and plasticity values are increased. The studied samples exhibited an inverse relationship between compressive strength and hardness. However, no clear structural changes in terms of crystallization or phase separation are observed. The results are interpreted in terms of both structural relaxation and release of internal stresses.
KW - Bulk metallic glass
KW - Differential scanning calorimetry (DSC)
KW - Mechanical properties
KW - Structural relaxation
KW - Transmission electron microscopy (TEM)
KW - X-ray diffraction (XRD)
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U2 - 10.1016/j.msea.2022.142841
DO - 10.1016/j.msea.2022.142841
M3 - Article
AN - SCOPUS:85124794114
SN - 0921-5093
VL - 839
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
M1 - 142841
ER -