Paper Title:
Numerical Simulation and Experimental Evidence for Surface Modification by High Current Pulsed Electron Beam
  Abstract

The simulation of the temperature reveals an ultra high heating/cooling rates in the order of 108~109 K/s and melted layer thickness micrometers in depth. A temperature-induced dynamic thermal stress fields can then generate three principal stress, the quasi-static stress, the thermoelastic stress, and the shock stress, the latter two being stress waves. The thermoelastic stress wave has small amplitudes less than 0.1 MPa. The shock stress wave however is a typical nonlinear wave, several hundreds of MPa in amplitude, much stronger than the thermoelastic stress wave, and has a strong impact on materials structure and properties far beyond the heat-affected zone. The maximum compressive quasi-static stress in the surface layer in aluminum reaches several hundreds of MPa, which easily induces surface deformation in metallic materials.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
3673-3676
DOI
10.4028/www.scientific.net/MSF.475-479.3673
Citation
Y. Qin, C. Dong, X. G. Wang, S. Z. Hao, J. X. Zou, A. M. Wu, Y. Liu, "Numerical Simulation and Experimental Evidence for Surface Modification by High Current Pulsed Electron Beam", Materials Science Forum, Vols. 475-479, pp. 3673-3676, 2005
Online since
January 2005
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$32.00
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