Contrast of color-changing metallic glasses reveals the glass properties beneath the surface

2022 ◽  
pp. 163674
Author(s):  
Pengfei Wang ◽  
Yutian Wang ◽  
Qi Cheng ◽  
Jiri Orava ◽  
Yong Hao Sun ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Glass Properties

scholarly journals Shadow glass transition as a thermodynamic signature of β relaxation in hyper-quenched metallic glasses

2020 ◽  
Vol 7 (12) ◽  
pp. 1896-1905 ◽  
Author(s):  
Qun Yang ◽  
Si-Xu Peng ◽  
Zheng Wang ◽  
Hai-Bin Yu
Keyword(s):  
Glass Transition ◽  
Metallic Glasses ◽  
Heating Rates ◽  
Scanning Calorimetry ◽  
Present Evidence ◽  
Fast Scanning Calorimetry ◽  
Β Relaxation ◽  
Temperature Time ◽  
Anomalous Heat ◽  
Glass Properties

Abstract One puzzling phenomenon in glass physics is the so-called ‘shadow glass transition’ which is an anomalous heat-absorbing process below the real glass transition and influences glass properties. However, it has yet to be entirely characterized, let alone fundamentally understood. Conventional calorimetry detects it in limited heating rates. Here, with the chip-based fast scanning calorimetry, we study the dynamics of the shadow glass transition over four orders of magnitude in heating rates for 24 different hyper-quenched metallic glasses. We present evidence that the shadow glass transition correlates with the secondary (β) relaxation: (i) The shadow glass transition and the β relaxation follow the same temperature–time dependence, and both merge with the primary relaxation at high temperature. (ii) The shadow glass transition is more obvious in glasses with pronounced β relaxation, and vice versa; their magnitudes are proportional to each other. Our findings suggest that the shadow glass transition signals the thermodynamics of β relaxation in hyper-quenched metallic glasses.

Crystallization and magnetic properties of CoNbBCu metallic glasses

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-27-Pr2-30
Author(s):  
L. Malkinski ◽  
A. Slawska-Waniewska ◽  
R. Zuberek ◽  
A. Wisniewski ◽  
H. K. Lachowicz ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Metallic Glasses

WHY DO METALLIC GLASSES FORM ?

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-139-C8-140
Author(s):  
J. Hafner
Keyword(s):  
Metallic Glasses

FREE VOLUME CHANGE OF METALLIC GLASSES STUDIED BY THERMAL EXPANSION MEASUREMENTS

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-875-C8-877
Author(s):  
E. Girt ◽  
P. Tomić ◽  
A. Kuršumović ◽  
T. Mihać-Kosanović
Keyword(s):  
Thermal Expansion ◽  
Free Volume ◽  
Volume Change ◽  
Metallic Glasses

DETERMINATION OF THE LOCAL STRUCTURE OF METALLIC GLASSES BY EXAFS

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-43-C9-46 ◽  
Author(s):  
A. Sadoc ◽  
A. M. Flank ◽  
D. Raoux ◽  
P. Lagarde
Keyword(s):  
Metallic Glasses ◽  
Local Structure

ULTRASONIC STUDIES OF METALLIC GLASSES AT LOW TEMPERATURES

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-517-C5-521
Author(s):  
G. Park ◽  
A. Hikata ◽  
C. Elbaum
Keyword(s):  
Metallic Glasses ◽  
Low Temperatures

RELAXATION STUDY OF Ni-P-B METALLIC GLASSES

1985 ◽  
Vol 46 (C8) ◽  
pp. C8-473-C8-477 ◽  
Author(s):  
B. Fogarassy ◽  
A. Böhönyey ◽  
A. Cziráki ◽  
I. Szabó ◽  
L. Gránásy ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Relaxation Study
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