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Synthesis and characterization of Zr-based in situ crystal precipitated and liquid phase separated bulk metallic glass composite

Czél, György

Mizser-Tomolya, Kinga

Kissné Svéda, Mária

Sycheva, Anna

Kristály, Ferenc

Roósz, András

Czél, Györgyné

Elsevier

2017

QD06 Mineralogy / ásványtan

Abstract The aim of this study was to evaluate new Zr-based bulk metallic composites with crystallized dendrites or droplets which have the volume fraction below the critical one (the percolation limit). The Cu36Zr48Al8Ag8 alloy was chosen as matrix. Dendrites formed by in-situ solidification due to Ni addition. It was found that a new monotectic alloy system can be created successfully owing to Y addition (1–7 at.%) to the matrix. Small amount of dendrites with non-random distribution has a strong influence on the compressive strength. Experiment showed that the alloy with 4.1 at.% Ni has the maximum compressive strength (1998 MPa) and Young's modulus (86 GPa) within the examined samples. The results of compression test reveal that the cracks propagate near the small droplets below 1 μm in diameter which generate weakening in the microstructure. In contrast, the large droplets especially above 3 μm in diameter create a strong barrier for the shear band propagation.

angol

Article

PeerReviewed

info:eu-repo/semantics/article

text

http://real.mtak.hu/45013/1/Repozitorium.pdf

Czél, György and Mizser-Tomolya, Kinga and Kissné Svéda, Mária and Sycheva, Anna and Kristály, Ferenc and Roósz, András and Czél, Györgyné (2017) Synthesis and characterization of Zr-based in situ crystal precipitated and liquid phase separated bulk metallic glass composite. JOURNAL OF NON-CRYSTALLINE SOLIDS, 458. pp. 41-51. ISSN 0022-3093

http://real.mtak.hu/45013/

http://dx.doi.org/10.1016/j.jnoncrysol.2016.12.017

MTMT:3154748; doi:10.1016/j.jnoncrysol.2016.12.017