Structural and Mechanical Characterization of Zr 58.5Ti 8.2Cu 14.2Ni 11.4Al 7.7 Bulk Metallic Glass
Artikel i vetenskaplig tidskrift, 2012

Thermal stability, structure and mechanical properties of the multi-component Zr 58.5Ti 8.2Cu 14.2Ni 11.4Al 7.7 bulk metallic glass have been studied in detail. The glassy material displays good thermal stability against crystallization and a fairly large supercooled liquid region of 52 K. During heating, the alloy transforms into a metastable icosahedral quasicrystalline phase in the first stage of crystallization. At high temperatures, the quasicrystalline phase undergoes a transformation to form tetragonal and cubic NiZr 2-type phases. Room-temperature compression tests of the as-cast sample show good mechanical properties, namely, high compressive strength of about 1,630 MPa and fracture strain of 3.3%. This is combined with a density of 6.32 g/cm 3 and values of Poisson's ratio and Young's modulus of 0.377 and 77 GPa, respectively. The mechanical properties of the glass can be further improved by cold rolling. The compressive strength rises to 1,780 MPa and the fracture strain increases to 8.3% for the material cold-rolled to a diameter reduction of 10%.

Crystallization

Mechanical properties

Bulk metallic glass (BMG)

Författare

K.G. Prashanth

Leibniz-Institut fur Festkorper- und Werkstoffforschung Dresden

S. Scudino

Leibniz-Institut fur Festkorper- und Werkstoffforschung Dresden

M.S. Khoshkhoo

Leibniz-Institut fur Festkorper- und Werkstoffforschung Dresden

Kumar Babu Surreddi

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

M. Stoica

Leibniz-Institut fur Festkorper- und Werkstoffforschung Dresden

G. Vaughan

European Synchrotron Radiation Facility (ESRF)

Juergen Eckert

Leibniz-Institut fur Festkorper- und Werkstoffforschung Dresden

Technische Universität Dresden

Materials

1996-1944 (ISSN)

Vol. 5 1 1-11

Ämneskategorier

Materialteknik

DOI

10.3390/ma5010001

Mer information

Senast uppdaterat

2018-03-02