Paper Title:
Evaluation of Mechanical Properties for Narrow-Gap Weld Zone in Reactor Coolant Loop
  Abstract

Conventionally, shield metal arc welding (SMAW) process was applied to join pipes of RCL, which caused lot of loss in time and cost due to excessive heat input and defects in joining section. Recently, narrow-gap welding (NGW) process was introduced to overcome the disadvantages of SMAW. However, the application of NGW to nuclear power plant is not yet common because safety of NGW process is not proven. In present paper, the welded coupons are manufactured under different welding processes in carbon steel. Then, microstructure observations and various mechanical tests are performed. It is verified that the mechanical properties of carbon steel are greatly changed after repair welding process due to applied heat flux, and that the effect of post-welding heat treatment is beneficial.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
2853-2858
DOI
10.4028/www.scientific.net/KEM.297-300.2853
Citation
J. D. Kwon, S. W. Woo, C. Y. Lee, S. C. Kang, H. S. Shin, "Evaluation of Mechanical Properties for Narrow-Gap Weld Zone in Reactor Coolant Loop ", Key Engineering Materials, Vols. 297-300, pp. 2853-2858, 2005
Online since
November 2005
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Price
$35.00
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