Equilibrium grain boundary segregation of phosphorus in 2. 6Cr-0. 7Mo-0. 3V steels

Journal Article · Sun Jan 01 00:00:00 EST 1995 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(94)00214-3· OSTI ID:6636895

Sevc, P; Janovec, J; Vyrostkova, A ^[1]; Koutnik, M ^[2]

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1. Slovak Academy of Sciences, Kosice (Slovakia). Inst. of Materials Research
2. State Inst. of Materials Research, Prague (Czech Republic)

The equilibrium grain boundary segregation of phosphorus in two 2.6Cr-0.7Mo-0.3V steels with 0.06 and 0.005 Wt% of C tempered at 823, 853 and 913 K was investigated. Auger electron spectroscopy was used to establish the grain boundary concentrations of the P, C, Cr, Mo and V. Chemical compositions of the carbides were determined by means of EDX/STEM. The standard McLean's theory and Guttmann's theory of co-segregation were used to analyze the experimental data. The values of [Delta]H[sub P], [Delta]H[sub Mo], [Delta]G[sub P][sup 0], Delta G[sub Mo][sup 0], and [alpha][sub MoP] were calculated. The value of interaction coefficient calculated according to Guttmann's theory is low to suppose the influence of molybdenum upon the P segregation. The more expressive changes in the grain boundary concentrations of P and C in relation in tempering temperature were found out in the steel with lower C content.

• OSTI ID: 6636895
• Journal Information: Acta Metallurgica et Materialia; (United States), Vol. 43:1; ISSN 0956-7151
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PHOSPHORUS
SEGREGATION
STEEL-CRMOV
GRAIN BOUNDARIES
THERMODYNAMIC PROPERTIES
CARBON ADDITIONS
EXPERIMENTAL DATA
IMPURITIES
METALLURGICAL EFFECTS
TEMPERING
ALLOYS
CHROMIUM ALLOYS
COPPER ADDITIONS
COPPER ALLOYS
DATA
ELEMENTS
HEAT TREATMENTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LOW ALLOY STEELS
MICROSTRUCTURE
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NICKEL ADDITIONS
NICKEL ALLOYS
NONMETALS
NUMERICAL DATA
PHYSICAL PROPERTIES
STEELS
VANADIUM ADDITIONS
VANADIUM ALLOYS
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties