Origin of Embrittlement of Metallic Glasses View Full Text


Ontology type: schema:Chapter      Open Access: True


Chapter Info

DATE

2018-05-27

AUTHORS

Marios D. Demetriou , Glenn R. Garrett , William L. Johnson

ABSTRACT

Owing to their glassy nature, metallic glasses demonstrate a toughness that is extremely sensitive to the frozen-in configurational state. This sensitivity gives rise to the so-called “annealing embrittlement”, which is often severe and in many respects limits the technological advancement of these materials. Here, equilibrium configurations (i.e. “inherent states”) of a metallic glass are established around the glass transition, and the configurational properties along with the plane-strain fracture toughness are evaluated. An association between the intrinsic toughness and the inherent state properties is attempted in an effort to identify the fundamental origin of embrittlement of metallic glasses. The established correlations reveal a one-to-one correspondence between a decreasing toughness and an increasing shear modulus, which is robust and continuous over a broad range of inherent states. This annealing embrittlement sensitivity is shown to vary substantially between metallic glass compositions, and appears to correlate well with the fragility of the metallic glass. More... »

PAGES

341-342

Book

TITLE

Proceedings of the First International Conference on Theoretical, Applied and Experimental Mechanics

ISBN

978-3-319-91988-1
978-3-319-91989-8

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-319-91989-8_76

DOI

http://dx.doi.org/10.1007/978-3-319-91989-8_76

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1104249359


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