Physical and Mechanical Properties of Zr-Based Metallic Glasses
- 1 January 1995
- journal article
- Published by Japan Institute of Metals in Materials Transactions, JIM
- Vol. 36 (7) , 890-895
- https://doi.org/10.2320/matertrans1989.36.890
Abstract
Thermal properties, oxidation, hardness, thermal expanstion, electric resistance and Young’s modulus were examined for Zr67Cu33, Zr65Al7.5Cu27.5, Zr65Al7.5Ni10Cu17.5 and Zr60Al15Co2.5Ni7.5Cu15 amorphous alloys with a wide supercooled liquid region. The results show that (1) Zr65Al17.5Ni10Cu17.5 and Zr60Al15Co2.5Ni7.5Cu15 alloys are very stable against oxidation up to high temperature of about 650 K, (2) Zr60Al15Co2.5Ni7.5Cu15 alloy is extremely softened in the temperature range of the supercooled liquid region, (3) The thermal expansion coefficient of Zr60Al15Co2.5Ni7.5Cu15 alloy is very small of 0.9×10−5 K−1, at temperatures below the glass transition temperature (Tg), (4) Temperature coefficient of electric resistance of Zr60Al15Co2.5Ni7.5Cu15 alloy is small of −9×10−5 K−1 below about 510 K and (5) Young’s modulus increases with increase of alloying components. The temperature dependance of Young’s modulus is of the order of as small as ∼10−5 K−1 except for Zr67Cu33 alloys.Keywords
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