Paper Title:
Investigation of Bar-Like Carbides in HR3C Boiler Steel
  Abstract

After the heat treatment at 1200 oC 30 minutes followed by water cooling and 700 oC 4 hours for HR3C (S31042) boiler steel, the bar-like carbides precipitate in grain boundaries and within grains. It was found that the bar-like carbides nucleate in the grain boundaries and grew into grains in a parallel manner. With the help of TEM, the carbides were characterized to be M23C6, with a length of about 6μm and width of 0.6-0.8μm. Through observing crept specimens after testing at 700 oC, it was found that fine and dispersed MX (about 20nm) as well as dislocation walls exist inside grains, except bar-like and granular M23C6 carbide.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
3105-3110
DOI
10.4028/www.scientific.net/MSF.638-642.3105
Citation
S. C. Cheng, Z. D. Liu, H. S. Bao, J. Z. Wang, "Investigation of Bar-Like Carbides in HR3C Boiler Steel", Materials Science Forum, Vols. 638-642, pp. 3105-3110, 2010
Online since
January 2010
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