Paper Title:
Computational Program for Non-Equilibrium Grain Boundary Segregation Kinetics
  Abstract

The solute segregation to grain boundaries may be classified into equilibrium and non-equilibrium segregation. The models and kinetics calculation equations were proved in previous work. However, the computational task for grain-boundary segregation kinetics process is complex and cumbersome as it can involve a vast amount of numerical data. It is therefore necessary to develop an easily usable computational program which can provide the researchers with a powerful tool in grain-boundary segregation kinetics process analysis in addition to having a sound theory. A computational program of non-equilibrium grain-boundary segregation (NGS) kinetics of solute is therefore developed in this paper. It includes programs for critical time calculation, effective time calculation and diffusion coefficients calculation, the program of Auger Electron Spectroscopy test data disposal, the program of curve fitting and the program of NGS kinetics simulation. A simulation example by using the computation program of NGS kinetic equations is in good accordance with the experimental observation of phosphorus in steel 12Cr1MoV. The computational program of NGS is therefore proved to be appropriate and helpful.

  Info
Periodical
Key Engineering Materials (Volumes 385-387)
Edited by
H.S. Lee, I.S. Yoon and M.H. Aliabadi
Pages
65-68
DOI
10.4028/www.scientific.net/KEM.385-387.65
Citation
J. Wang, Q. F. Li, E. B. Liu, "Computational Program for Non-Equilibrium Grain Boundary Segregation Kinetics", Key Engineering Materials, Vols. 385-387, pp. 65-68, 2008
Online since
July 2008
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: Li Li, Qing Fen Li, Er Jun Guo, Er Bao Liu, Xin Fang Cui, Xiao Xue Xu
Abstract:According to the non-equilibrium grain-boundary segregation (NGS) kinetics curve of phosphorus, a series of Charpy impact tests was performed...
1183
Authors: Li Li, Qing Fen Li, Hui Min Zhou
Abstract:For most of the experiments and the practical problems about the non-equilibrium grain-boundary segregation (NGS), segregation will always...
39
Authors: Er Bao Liu, Qing Fen Li, Hong Bin Chen
Abstract:The critical times of phosphorus segregation in low alloy steel 12Cr1MoV at different solution temperatures, 1050°C and 1300°C, are studied...
2369
Authors: Ying Jie Qiao, Hong Bo Fu, Chun Kai Li
Abstract:In this paper, the diffusion coefficient of vacancy-solute complex and diffusion coefficient of solute atoms, P, in non-equilibrium...
317
Authors: Yu Dong Fu, Qing Fen Li
Abstract:Experimental investigation about the grain boundary fracture behavior and segregation behavior of phosphorus under low tensile stresses in...
193