Paper Title:
A Model for the Effects of Strain Rate and Temperature on the Deformation Behavior of Ultrafine-Grained Metals
  Abstract

A theoretical model is developed to account for the effects of strain rate and temperature on the deformation behavior of ultrafine-grained fcc Cu. Three mechanisms, including dislocation slip, grain boundary diffusion, and grain boundary sliding are considered to contribute to the deformation response simultaneously. Numerical simulations show that the strain rate sensitivity increases with decreasing grain size and strain rate, and that the flow stress and tensile ductility increase with either increasing strain rate or decreasing deformation temperature.

  Info
Periodical
Advanced Materials Research (Volumes 291-294)
Chapter
Mechanical Behavior & Fracture
Edited by
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
Pages
1173-1177
DOI
10.4028/www.scientific.net/AMR.291-294.1173
Citation
Z. L. Xie, L. Z. Sun, F. Yang, "A Model for the Effects of Strain Rate and Temperature on the Deformation Behavior of Ultrafine-Grained Metals", Advanced Materials Research, Vols. 291-294, pp. 1173-1177, 2011
Online since
July 2011
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$32.00
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