Paper Title:
Finite Element Analysis of Effects of Preheating and Postweld Heat Treatment on Residual Stress in Pipe Welding
  Abstract

To simulate preheating and postweld heat treatment of Q345 steel pipe welding, the finite element model was established. The welding process was simulated by method of the ANSYS element birth and death technique. In this paper, to obtain the distribution of the temperature field and stress field in different situations, preheating processes with two different values of temperature and postweld heat treatment process were simulated respectively. The results show that preheating can homogenize residual stress distribution of the weldment and decrease the residual stress. The heat treatment reduces the residual stress in inner and outer walls by 24% and 70% respectively and the stress distribution is more even and stress concentration is reduced.

  Info
Periodical
Advanced Materials Research (Volumes 314-316)
Chapter
Modeling, Analysis and Simulation of Manufacturing Processes
Edited by
Jian Gao
Pages
428-431
DOI
10.4028/www.scientific.net/AMR.314-316.428
Citation
H. Du, D. P. Wang, C. X. Liu, H. Zhang, "Finite Element Analysis of Effects of Preheating and Postweld Heat Treatment on Residual Stress in Pipe Welding", Advanced Materials Research, Vols. 314-316, pp. 428-431, 2011
Online since
August 2011
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Price
$32.00
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