Structural evolution of a CuZr-based bulk metallic glass composite during cryogenic treatment observed by in-situ high-energy X-ray diffraction

2021 ◽  
pp. 159570
Author(s):  
Peng Xue ◽  
Yongjiang Huang ◽  
Simon Pauly ◽  
Fangmin Guo ◽  
Yang Ren ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Cryogenic Treatment ◽  
Structural Evolution ◽  
High Energy ◽  
X Ray Diffraction ◽  
Glass Composite ◽  
X Ray ◽  
Bulk Metallic Glass Composite

In situ high-energy x-ray diffraction observation of structural evolution in a Ti-based bulk metallic glass upon heating

2010 ◽  
Vol 25 (12) ◽  
pp. 2271-2277 ◽  
Author(s):  
N. Zheng ◽  
G. Wang ◽  
L.C. Zhang ◽  
M. Calin ◽  
M. Stoica ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Free Volume ◽  
Structural Relaxation ◽  
Structural Evolution ◽  
High Energy ◽  
Rapid Quenching ◽  
X Ray Diffraction ◽  
X Ray

The structural evolution of the Ti40Zr10Cu34Pd14Sn2 bulk metallic glass (BMG) upon was investigated by means of in situ high-energy x-ray diffraction. The position, width, and intensity of the first peak in diffraction patterns are fitted through Voigt function below 800 K. All the peak position, width, and intensity values show a nearly linear increase with the increasing temperature to the onset temperature of structural relaxation, Tr = 510 K. However, these values start to deviate from the linear behavior between Tr and Tg (the glass transition temperature). The changes in free volume and the coefficient of volume thermal expansion prove that the aforementioned phenomenon is closely related to the structural relaxation releasing excess free volume arrested during rapid quenching of the BMG. Above 800 K, three crystallization events are detected and the first exothermic event is due to the formation of metastable nanocrystals.

Zr-based bulk metallic glass composite with in situ precipitated nanocrystals

2014 ◽  
Vol 586 ◽  
pp. 155-158 ◽  
Author(s):  
Shengli Zhu ◽  
Guoqiang Xie ◽  
Hao Wang ◽  
Xianjin Yang ◽  
Zhenduo Cui ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Composite ◽  
Bulk Metallic Glass Composite

NANOSCALE DIMPLES AND PERIODIC CORRUGATIONS ON FRACTURE SURFACE OF Zr-BASED BULK METALLIC GLASS COMPOSITE

2019 ◽  
Vol 26 (08) ◽  
pp. 1950037
Author(s):  
BO SHI ◽  
SHIYU LUAN ◽  
PEIPENG JIN
Keyword(s):  
Fracture Surface ◽  
Metallic Glass ◽  
Cooling Rate ◽  
Bulk Metallic Glass ◽  
Crystallization Behavior ◽  
Glass Composite ◽  
Bulk Metallic Glass Composite

Nanoscale dimples and periodic corrugations are observed on the fracture surface of Zr-based bulk metallic glass composite (BMGC). The nanoscale periodic corrugations display a curved shape, which is different from that observed in previous works. In addition, the crystallization behavior of [Formula: see text][Formula: see text][Formula: see text][Formula: see text] BMG was investigated. The second crystallization event of Zr-Cu-Ni-Al BMG can be controlled by annealing or tuning cooling rate. The in situ Zr-based BMGC was prepared via lowering cooling rate. The Zr-based BMGC displays completely brittleness.

Mg-based bulk metallic glass composite containing in situ microsized quasicrystalline particles

2014 ◽  
Vol 78-79 ◽  
pp. 21-24 ◽  
Author(s):  
Yuan-Yun Zhao ◽  
He Men ◽  
Diana Estévez ◽  
Yan Liu ◽  
Xinmin Wang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Composite ◽  
Bulk Metallic Glass Composite

scholarly journals Improvement the Plasticity via Dual-Amorphous and Nanocrystals Synergistically in a Zr-Cu-Al-Nb Bulk Metallic Glass Composite

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1158
Author(s):  
Tuo Wang ◽  
Xiaohui Yang ◽  
Qiang Li ◽  
Chuntao Chang
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Underlying Mechanism ◽  
Glass Composite ◽  
Glass Composites ◽  
Bulk Metallic Glass Composites ◽  
First Time ◽  
Bulk Metallic Glass Composite

In this work, a small amount of Nb has been added in a Zr52Cu42.5Al5.5 bulk metallic glass, and a Zr52Cu42Al5.5Nb0.5 bulk metallic glass composite with dual-amorphous and nanocrystal structures has been developed for the first time. This in situ formed bulk metallic glass composite has a larger room compressive plasticity of above 13% than that of the Zr52Cu42.5Al5.5 bulk metallic glass. The excellent plasticity of the bulk metallic glass composite is attributed to the phase-separated matrix with micro-nanocrystal and the nanocrystallization during the deforming process. This work may give a new sight into design bulk metallic glass composites and the underlying mechanism for deformation.

Nucleation and growth in bulk metallic glass under high pressure investigated using in situ x-ray diffraction

2003 ◽  
Vol 83 (25) ◽  
pp. 5202-5204 ◽  
Author(s):  
W. H. Wang ◽  
P. Wen ◽  
D. Q. Zhao ◽  
M. X. Pan ◽  
T. Okada ◽  
...  
Keyword(s):  
High Pressure ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Nucleation And Growth ◽  
X Ray Diffraction ◽  
X Ray
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