contributor author | George Z. Voyiadjis | |
contributor author | Danial Faghihi | |
contributor author | Cheng Zhang | |
date accessioned | 2017-05-08T21:57:49Z | |
date available | 2017-05-08T21:57:49Z | |
date copyright | March 2011 | |
date issued | 2011 | |
identifier other | %28asce%29nm%2E2153-5477%2E0000070.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/67534 | |
description abstract | This work addresses the temperature and rate indentation size effects (TRISE) encountered in nanoindentation experiments and the corresponding material intrinsic length scales at different strain rates. The same value for the material length scale cannot be used for different rate, temperature, and accumulated plastic-strain conditions. A variable length scale is introduced in this work and used on two different face-centered cubic (FCC) metals. Indentation experiments are performed on copper and aluminum polycrystalline samples for different strain rates. To check the validity of the assumed concept for local hardening in nanoindentation, additional experiments are conducted on single-crystal materials. The existing theories describing the indentation size effects and length scales are reviewed, and a physically based model that depends on strain rate, accumulated plastic strain, and temperature that were scaled with hardness experiments results is proposed for length scales. Furthermore, numerical simulations are performed by using the | |
publisher | American Society of Civil Engineers | |
title | Analytical and Experimental Determination of Rate- and Temperature-Dependent Length Scales Using Nanoindentation Experiments | |
type | Journal Paper | |
journal volume | 1 | |
journal issue | 1 | |
journal title | Journal of Nanomechanics and Micromechanics | |
identifier doi | 10.1061/(ASCE)NM.2153-5477.0000027 | |
tree | Journal of Nanomechanics and Micromechanics:;2011:;Volume ( 001 ):;issue: 001 | |
contenttype | Fulltext | |