Experimental Studies of Non-Equilibrium Grain-Boundary Segregations of Phosphorus under Low Tensile Stresses

Yu Dong Fu; Gang Wang; Chen Liu; Qing Fen Li

doi:10.4028/www.scientific.net/KEM.353-358.396

Paper Titles

Study on the Strength of Jointed Rock Mass
p.381

Effects of Chemical Compositions of the Submerged Arc Welding Wires on Impact Toughness of the Weld Metals for the Pipeline Steel
p.385

Stress Distribution of the Composites Reinforced by Slub-Like Short Fibers
p.389

Strength and Toughness of 1.1wt% Li-Containing Al-Zn-Mg-Cu Alloys
p.392

Experimental Studies of Non-Equilibrium Grain-Boundary Segregations of Phosphorus under Low Tensile Stresses
p.396

Influence of Residual Stresses on the Interfacial Toughness Measurement by Cross-Sectional Nanoindentation
p.400

Micorstructure and Properties of 2Cr16Ni2MoN Stainless Steel
p.404

Stress Relaxation Testing For Analysis of 12Cr1MoVG Steel for Creep Strength Evaluation
p.408

Compressive Deformation Behavior of the Ferritic Oxide Dispersion Strengthened Alloys at Elevated Temperatures
p.412

HomeKey Engineering MaterialsKey Engineering Materials Vols. 353-358Experimental Studies of Non-Equilibrium...

Experimental Studies of Non-Equilibrium Grain-Boundary Segregations of Phosphorus under Low Tensile Stresses

Abstract:

In the present paper, the non-equilibrium grain-boundary segregation of P atom was studied in low alloy steels subjected to a low tensile stress at different temperatures. The AES (Auger electron spectroscopy) experiments and dynamic analyses were conducted to study on the non-equilibrium grain-boundary segregation of P atom. The research results show that non-equilibrium segregation of phosphorus occurred at the grain boundaries of the steels 2.25Cr1Mo and 12Cr1MoV, while the critical time reached about 0-1 hour at constant temperatures 773 and 813K. The relationship between the diffusion rate and the diffusion time for the complex and the phosphorus atom was investigated based on the experimental results. Eventually the diffusion coefficients of complex and P were calculated with using a proposed dynamic model.