Acta Metallurgica Sinica (English Letters) ›› 2004, Vol. 17 ›› Issue (5): 639-644 .

• Research Articles • Previous Articles     Next Articles

PHOSPHORUS GRAIN BOUNDARY SEGREGATION IN A P-DOPED 2.25Cr1Mo STEEL

D.D.Shen   

  1. The Hubei Province Key Laboratory of Ceramics and Refractories,Wuhan University of Science and Technology,Wuhan430081,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-10-25 Published:2009-10-10
  • Contact: D.D.Shen

Abstract: Grain boundary segregation of phosphorus during tempering at 540℃ after quenching from 980℃ is examined for a P-doped 2.25Cr1Mo steel by means of Auger electron spectroscopy.The solute-boundary binding energy and the diffusion coefficient for phosphorus are determined by virtue of the measured segregation kinetics along with the equilibrium segregation theory.The obtained values of the above parameters are discussed with comparison to those found in the literature for low-alloy steels.

Key words: segregation, grain boundary, low-alloy steel