The Redistribution and Alignment of Crystalline Flakes in a Bulk Metallic Glass Composite during Thermoplastic Forming

2011 ◽  
Vol 702-703 ◽  
pp. 971-974
Author(s):  
Wan Qiang Xu ◽  
Lalu Robin ◽  
Kevin J. Laws ◽  
Rong Kun Zheng ◽  
Michael Ferry
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Amorphous Matrix ◽  
Volume Fraction ◽  
Supercooled Liquid ◽  
Glass Composite ◽  
Uniform Dispersion ◽  
Thermoplastic Forming ◽  
Bulk Metallic Glass Composite

An In-situ Mg-based bulk metallic glass (BMG) composite containing 40% volume fraction of Mg-rich crystalline flakes was produced by die casting. During cooling from the melt, the flakes nucleate heterogeneously and subsequently grow with their broad faces parallel to the {0001} plane. This generated a uniform dispersion of randomly-oriented flakes within an amorphous matrix. When compressed uniaxially up to 60% reduction in the supercooled liquid (SCL) region, the flakes in this composite were substantially aligned their broad faces towards the compression plane that generated a strong //ND fibre texture.

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.

The oxidation behavior of a novel Ni-free Zr–Cu-based bulk metallic glass composite in the supercooled liquid and crystallization states

2014 ◽  
Vol 53 ◽  
pp. 34-39 ◽  
Author(s):  
Huei-Sen Wang ◽  
Wei-Hau Li ◽  
Mei-Hui Wu ◽  
Hou-Guang Chen ◽  
Jason Shian-Ching Jang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Oxidation Behavior ◽  
Supercooled Liquid ◽  
Glass Composite ◽  
Bulk Metallic Glass Composite

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.

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