Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7979907 | Materials Science and Engineering: A | 2014 | 7 Pages |
Abstract
Different size effects and deformation mechanisms are revealed in α-titanium (Ti) single crystal nanopillars orientated for [112Ì0] and [0001] based on molecular dynamics simulations. The strength-size relationship changes from “smaller is stronger” to “smaller is much weaker” when the width of nanopillars reduces from 19 nm to 3 nm. The “smaller is much weaker” is attributed to that the surface effect caused by a thermal vibration of surface atoms leads to the initiation and growth of surface dislocations.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Junqiang Ren, Qiaoyan Sun, Lin Xiao, Xiangdong Ding, Jun Sun,