000000082 001__ 82
000000082 005__ 20230824003254.0
000000082 0247_ $$a10.7936/av98-vn87$$2DOI
000000082 037__ $$aRDM
000000082 041__ $$aeng
000000082 245__ $$aExperimental Results of Nanoindentation in alpha-Quartz
000000082 269__ $$a2021-07-22
000000082 270__ $$mbstrozew@caltech.edu$$pStrozewski, Ben
000000082 300__ $$a170 MB
000000082 336__ $$aDataset
000000082 520__ $$aQuartz is an abundant mineral in Earth’s crust whose mechanical behavior plays a significant role in the deformation of the continental lithosphere. However, the ductile rheology of quartz is difficult to measure experimentally at low temperatures without high confining pressures due to the tendency of quartz (and other geologic materials) to fracture under these conditions. Instrumented nanoindentation experiments inhibit cracking even at ambient conditions, allowing for the measurement of the ductile rheology of hard materials over a wide range of temperatures. Here we measure the indentation hardness of four synthetic quartz specimens and one natural quartz specimen with varying water contents over a temperature range of 23ºC to 500ºC from nanoindentation experiments. Yield stress, which is calculated from hardness but is model dependent, is fit to a constitutive flow law for low-temperature plasticity to estimate the athermal Peierls stress of quartz. The yield stresses presented here are lower than those obtained by extrapolating flow laws constrained by experiments at higher temperatures. Indentation hardness and yield stress show no dependence on water content.
000000082 536__ $$c1726165$$oNational Science Foundation Division of Earth Sciences$$qhttps://ror.org/05v01mk25$$1https://nsf.gov/awardsearch/showAward?AWD_ID=1726165
000000082 536__ $$aSummer Undergraduate Research Awards$$oWashington University in St. Louis $$qhttps://ror.org/01yc7t268
000000082 540__ $$aCreative Commons Attribution (CC BY) 4.0 International$$uhttps://creativecommons.org/licenses/by/4.0/
000000082 650__ $$aEarth and related environmental sciences
000000082 6531_ $$aquartz
000000082 6531_ $$ananoindentatoin
000000082 6531_ $$ayield stress
000000082 6531_ $$aSIMS
000000082 655__ $$aTabular
000000082 7001_ $$aStrozewski, Ben$$1https://orcid.org/0000-0003-2006-8160$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000000082 7001_ $$aSly, Michael$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000000082 7001_ $$aFlores, Katharine$$1https://orcid.org/0000-0002-5853-0878$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000000082 7001_ $$aSkemer, Philip$$1https://orcid.org/0000-0002-6702-1098$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR
000000082 8564_ $$9bbbc0bad-def1-415c-9821-0f26717b06cc$$s170944267$$uhttps://data.library.wustl.edu/record/82/files/Experimental_Results_of_Nanoindentation_in_alpha_Quartz.zip$$ePublic$$2f8deb73c19275740840b0df5e9d591ca$$01
000000082 904__ $$amsly@wustl.edu
000000082 904__ $$afloresk@wustl.edu
000000082 904__ $$apskemer@wustl.edu
000000082 909CO $$ooai:data.library.wustl.edu:82$$pdataset
000000082 980__ $$aWashU Researcher Data