Role of aluminum as an oxygen-scavenger in zirconium based bulk metallic glasses

Journal Article · Mon Feb 13 00:00:00 EST 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3685492· OSTI ID:22025435

Heinrich, Jochen; Busch, Ralf ^[1]; Mueller, Frank; Grandthyll, Samuel; Huefner, Stefan ^[2]

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1. Metallic Materials, Saarland University, P.O. Box 151150, 66041 Saarbruecken (Germany)
2. Experimental Physics, Saarland University, P.O. Box 151150, 66041 Saarbruecken (Germany)

In order to investigate a way to diminish the impact of oxygen onto the critical cooling rate of Zr-based alloys, the bonding chemistry of the elements in Zr-Cu-Ni-Al-Nb-Si bulk metallic glasses with different oxygen contents is studied by x-ray photoelectron spectroscopy. Complementary undercooling experiments lead to continuous-cooling-transformation diagrams for the studied alloys. The experimental results demonstrate that Al not only acts as a scavenger for both absorbed and intrinsic oxygen but the dissolution of its oxide on atomic length scales refrains from heterogeneous nucleation. The combined effect is an enhancement of oxygen tolerance in the investigated alloy.

• OSTI ID: 22025435
• Journal Information: Applied Physics Letters, Vol. 100, Issue 7; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
ALUMINIUM ALLOYS
CHEMICAL BONDS
COPPER ALLOYS
METALLIC GLASSES
NICKEL ALLOYS
NIOBIUM ALLOYS
NUCLEATION
OXYGEN
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SILICON ALLOYS
SUBCOOLING
X-RAY PHOTOELECTRON SPECTROSCOPY
ZIRCONIUM
ZIRCONIUM ALLOYS