Paper Title:
Distribution of Mo at Grain Boundary of 1300MPa CrMo Steel
  Abstract

TEM, EDS and STEM were used to investigate distribution of Mo element in new CrMo steel ADF1 which is applied to 1300MPa high strength bolts with superior delayed fracture resistance. Research results reveal that Mo easily concentrates at grain boundaries. According to refined EDS point and mapping analysis, the region of Mo segregation at grain boundary is about several nanometers wide, and distribution of Mo along the grain boundary is not uniform. The average content of Mo at grain boundary is about double of that in grain area. Concentration of Mo can increase the bonding force of grain boundary, and this is of advantage to the improvement of strength and delayed fracture resistance of the new CrMo steel.

  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
109-112
DOI
10.4028/www.scientific.net/MSF.475-479.109
Citation
W.G. Yang, L.N. Zhang, X. Zhang, W.J. Hui, "Distribution of Mo at Grain Boundary of 1300MPa CrMo Steel", Materials Science Forum, Vols. 475-479, pp. 109-112, 2005
Online since
January 2005
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Price
$32.00
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