{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Ketkaew J"],"funding":["U.S. Department of Energy","U.S. Department of Energy (DOE)","Richard F. Goodman Yale/Weizmann Exchange Program"],"pagination":["3271"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6095891"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["9(1)"],"pubmed_abstract":["The fracture toughness of glassy materials remains poorly understood. In large part, this is due to the disordered, intrinsically non-equilibrium nature of the glass structure, which challenges its theoretical description and experimental determination. We show that the notch fracture toughness of metallic glasses exhibits an abrupt toughening transition as a function of a well-controlled fictive temperature (Tf), which characterizes the average glass structure. The ordinary temperature, which has been previously associated with a ductile-to-brittle transition, is shown to play a secondary role. The observed transition is interpreted to result from a competition between the Tf-dependent plastic relaxation rate and an applied strain rate. Consequently, a similar toughening transition as a f"],"journal":["Nature communications"],"pubmed_title":["Mechanical glass transition revealed by the fracture toughness of metallic glasses."],"pmcid":["PMC6095891"],"funding_grant_id":["DE-SC0004889","DE-AC02-06CH11357","DE-SC0016179"],"pubmed_authors":["Yamada R","O'Hern CS","Pereira G","Fan M","Wang H","Datye A","Schroers J","Schwarz UD","Dmowski W","Liu Z","Bouchbinder E","Egami T","Shattuck MD","Chen W","Ketkaew J"],"additional_accession":[]},"is_claimable":false,"name":"Mechanical glass transition revealed by the fracture toughness of metallic glasses.","description":"The fracture toughness of glassy materials remains poorly understood. In large part, this is due to the disordered, intrinsically non-equilibrium nature of the glass structure, which challenges its theoretical description and experimental determination. We show that the notch fracture toughness of metallic glasses exhibits an abrupt toughening transition as a function of a well-controlled fictive temperature (Tf), which characterizes the average glass structure. The ordinary temperature, which has been previously associated with a ductile-to-brittle transition, is shown to play a secondary role. The observed transition is interpreted to result from a competition between the Tf-dependent plastic relaxation rate and an applied strain rate. Consequently, a similar toughening transition as a f","dates":{"release":"2018-01-01T00:00:00Z","publication":"2018 Aug","modification":"2025-04-21T17:45:00.369Z","creation":"2019-03-26T23:54:34Z"},"accession":"S-EPMC6095891","cross_references":{"pubmed":["30115910"],"doi":["10.1038/s41467-018-05682-8"]}}