Paper Title:
On the Tensile Stress and Damage Accumulation during Equal Channel Angular Extrusion
  Abstract

The Cockcroft-Latham (CL) damage factor has been calculated, using FEM simulation, during equal channel angular extrusion (ECAE) of strain hardening materials. A high CL damage factor was predicted inside the billet and the damage was increased with the increasing strain hardening coefficient. This was closely related to a generation of increasingly high tensile stress in the deformation zone inside the billet due to an inhomogeneous deformation. The possibility of cracking inside the ECAE billets was confirmed in the ECAE processing of Ti-0.34O-0.95Fe and Ti-0.5Fe billets. The simulation further predicted that CL damage factor can be reduced by applying back pressure or friction force.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 7: Common Aspects of Manufacturing
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
2283-2289
DOI
10.4028/www.scientific.net/AMR.295-297.2283
Citation
Z. J. Zhang, J. K. Park, "On the Tensile Stress and Damage Accumulation during Equal Channel Angular Extrusion", Advanced Materials Research, Vols. 295-297, pp. 2283-2289, 2011
Online since
July 2011
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Price
$32.00
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