Comments on the grain boundary segregation and diffusion of phosphorus in a 12%CrMoV-steel

The experimental results of Mackenbrock and Grabke (Steel Res. , 62, 371, 1991) on the grain boundary segregation kinetics in a 12%CrMoV-steel doped with 0.057 wt.% P are interpreted using the demixing model of Militzer and Wieting (Acta Metall. , 37, 2585, 1989). The demixing model gives a straight...

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Veröffentlicht in:	Scripta metallurgica et materialia 1993-05, Vol.28 (9), p.1043-1046
Hauptverfasser:	Militzer, M., Wieting, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	360102 > Metals & Alloys-- Structure & Phase Studies ALLOYS Applied sciences ATOM TRANSPORT CHROMIUM ALLOYS CHROMIUM STEELS COMPARATIVE EVALUATIONS Condensed matter: structure, mechanical and thermal properties CRYSTAL STRUCTURE DIFFUSION ELEMENTS EMBRITTLEMENT Equations of state, phase equilibria, and phase transitions EVALUATION Exact sciences and technology GRAIN BOUNDARIES HIGH ALLOY STEELS IRON ALLOYS IRON BASE ALLOYS MATERIALS SCIENCE MATHEMATICAL MODELS Metals. Metallurgy MICROSTRUCTURE MOLYBDENUM ADDITIONS MOLYBDENUM ALLOYS NEUTRAL-PARTICLE TRANSPORT NONMETALS PHOSPHORUS Physics RADIATION TRANSPORT SEGREGATION Solubility, segregation, and mixing phase separation STAINLESS STEELS STEELS VANADIUM ADDITIONS VANADIUM ALLOYS 360104 > Metals & Alloys-- Physical Properties
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Zusammenfassung:	The experimental results of Mackenbrock and Grabke (Steel Res. , 62, 371, 1991) on the grain boundary segregation kinetics in a 12%CrMoV-steel doped with 0.057 wt.% P are interpreted using the demixing model of Militzer and Wieting (Acta Metall. , 37, 2585, 1989). The demixing model gives a straightforward interpretation of the embrittling kinetics due to phosphorus segregation. It is suggested that the demixing model should be favoured over the modification of the conventional segregation model which introduces an accelerated bulk diffusivity via fast diffusion paths.
ISSN:	0956-716X
DOI:	10.1016/0956-716X(93)90007-F