Paper Title:
Microstructures and Mechanical Properties of Dissimilar Metal Weld A508/52M/316L Used in Nuclear Power Plants
  Abstract

The microstructures and mechanical properties of a dissimilar metal weld A508/52M/316L used in the primary water system of pressurized water reactor (PWR) nuclear power plants were investigated. The weld exhibits complicated microstructures, with significant change around the interfaces A508/52M and 52M/316L. The variations of main elements in 52M weld metal are greater than those in the A508 and 316L, with significant changes in the zones closed to the interfaces. The bulk 52M weld metal has higher and more uneven hardness than both of the base metals A508 and 316L. The HAZ of A508 exhibits the highest hardness value in the weld. The area around the A508/52M interface is the most weak part for stress corrosion cracking (SCC) resistance of the weld in simulated PWR primary water at 290°C. SCC was only found in the specimens tested at +200mV(SHE) but not in those tested at both -780mV and Ecorr (about -500mV).

  Info
Periodical
Edited by
Chin-Yi Chen and Jing-Tang Chang
Pages
40-47
DOI
10.4028/www.scientific.net/KEM.479.40
Citation
K. W. Fang, G. J. Li, G. F. Li, W. Yang, M. L. Zhang, Z. Y. Sun, "Microstructures and Mechanical Properties of Dissimilar Metal Weld A508/52M/316L Used in Nuclear Power Plants", Key Engineering Materials, Vol. 479, pp. 40-47, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Thanaporn Thonondaeng, Kittichai Fakpan, Krittee Eidhed
Chapter 1: Sustainable Engineering and Innovative Technologies
Abstract:This study involves V-groove butt welding of CP Titanium to 304 stainless steel by the gas tungsten arc welding (GTAW) process without and...
43