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Anelastic to Plastic Transition in Metallic Glass-Forming Liquids

Harmon, John S. and Demetriou, Marios D. and Johnson, William L. and Samwer, Konrad (2007) Anelastic to Plastic Transition in Metallic Glass-Forming Liquids. Physical Review Letters, 99 (13). Art. No. 135502. ISSN 0031-9007. doi:10.1103/PhysRevLett.99.135502.

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The configurational properties associated with the transition from anelasticity to plasticity in a transiently deforming metallic glass-forming liquid are studied. The data reveal that the underlying transition kinetics for flow can be separated into reversible and irreversible configurational hopping across the liquid energy landscape, identified with beta and alpha relaxation processes, respectively. A critical stress characterizing the transition is recognized as an effective Eshelby “backstress,” revealing a link between the apparent anelasticity and the “confinement stress” of the elastic matrix surrounding the plastic core of a shear transformation zone.

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Additional Information:©2007 The American Physical Society. (Received 8 June 2007; published 28 September 2007) This work was supported in part by the MRSEC Program of the National Science Foundation under Grant No. DMR-0520565 and in part by the Leibniz Program under Grant No. SFB602. The authors are grateful to G. Ravichandran for providing the loading apparatus.
Issue or Number:13
Record Number:CaltechAUTHORS:HARprl07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8928
Deposited By: Archive Administrator
Deposited On:01 Oct 2007
Last Modified:08 Nov 2021 20:54

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