Kinetics of grain boundary segregation in multicomponent systems – The example of a Mo-C-B-O system

2018 ◽  
Vol 150 ◽  
pp. 110-114 ◽  
Author(s):  
D. Scheiber ◽  
L. Romaner ◽  
F.D. Fischer ◽  
J. Svoboda
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Multicomponent Systems ◽  
Kinetics Of

Precipitation related anomalies in kinetics of phosphorus grain boundary segregation in low alloy steels

2003 ◽  
Vol 51 (14) ◽  
pp. 4025-4032 ◽  
Author(s):  
J Janovec ◽  
A Výrostková ◽  
P Ševc ◽  
J.S Robinson ◽  
M Svoboda ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Low Alloy Steels ◽  
Alloy Steels ◽  
Kinetics Of

Effect of Isothermal Holding Temperature on NGS Kinetics of Phosphorus and Temper Embrittlement

2007 ◽  
Vol 348-349 ◽  
pp. 549-552
Author(s):  
Jun Wang ◽  
Qing Fen Li ◽  
Er Bao Liu
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Isothermal Holding ◽  
Boundary Segregation ◽  
Temper Embrittlement ◽  
Solution Treatment ◽  
Grain Boundary Segregation ◽  
Solution Temperature ◽  
Kinetics Of ◽  
Holding Temperature

When failure occurs in material, it is often occurs by fracture along some grain boundaries and often by the micro-segregation of embrittling impurity to the grain boundaries. In the present work, the non-equilibrium grain-boundary segregation (NGS) kinetics of phosphorus and the temper embrittlement at the same solution treatment and different isothermal holding temperature in steel 2.25Cr1Mo are studied. The NGS kinetics curves of phosphorus at the same solution temperature （1050 oC ）and different isothermal holding temperature (540 oC and 600 oC) are given. Experimental results provide a direct evidence of NGS kinetic model and show that the grain boundary segregation concentrations of phosphorus for specimen isothermal holding at 540 oC are higher than those at 600 oC. The peak values of AES patterns of solute atoms for specimen isothermal holding at 540 oC are also higher than those at 600 oC. It is therefore concluded that the lower the isothermal holding temperature, the higher the segregation concentration of phosphorus at the grain-boundaries, and also the higher the degree of embrittlement.

Sign in / Sign up

Export Citation Format

Share Document