@article{b00977ebc7194f52adb0d0a626bedc66,
title = "Tuned critical avalanche scaling in bulk metallic glasses",
abstract = "Ingots of the bulk metallic glass (BMG), Zr64.13 Cu 15.75 Ni10.12 Al10 in atomic percent (at. %), are compressed at slow strain rates. The deformation behavior is characterized by discrete, jerky stress-drop bursts (serrations). Here we present a quantitative theory for the serration behavior of BMGs, which is a critical issue for the understanding of the deformation characteristics of BMGs. The mean-field interaction model predicts the scaling behavior of the distribution, D(S), of avalanche sizes, S, in the experiments. D(S) follows a power law multiplied by an exponentially-decaying scaling function. The size of the largest observed avalanche depends on experimental tuning-parameters, such as either imposed strain rate or stress. Similar to crystalline materials, the plasticity of BMGs reflects tuned criticality showing remarkable quantitative agreement with the slip statistics of slowly-compressed nanocrystals. The results imply that material-evaluation methods based on slip statistics apply to both crystalline and BMG materials.",
author = "James Antonaglia and Xie Xie and Gregory Schwarz and Matthew Wraith and Junwei Qiao and Yong Zhang and Liaw, {Peter K.} and Uhl, {Jonathan T.} and Dahmen, {Karin A.}",
note = "Funding Information: We thank Nir Friedman, Michael LeBlanc, Tyler Earnest, and Braden Brinkman for helpful conversation. We gratefully acknowledge the support of the US National Science Foundation (NSF) through grants DMR 1005209, DMS 1069224 (KAD and JA), DMR-0909037, CMMI-0900271, and CMMI-1100080, the Department of Energy (DOE), NEUP 00119262, DE-FE-0008855 (PKL and XX) with Drs. Curry, Huber, Cooper, Finotello, Ardell, Taleff, Cedro, Jensen, Tan, and Lesica as contract monitors. KAD and PKL thank DOE for the support through project DE-FE-0011194 with the project manager, Dr. Markovich. JWQ acknowledges the financial support of the National Natural Science Foundation of China (No. 51101110) and the Youth Science Foundation of Shanxi Province, China (No. 2012021018-1). PKL very much appreciates the support of the U.S. Army Research Office project (W911NF-13-1-0438) with the program manager, Dr. Mathaudhu.",
year = "2014",
month = mar,
day = "17",
doi = "10.1038/srep04382",
language = "English (US)",
volume = "4",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
}