An expression for solubility product of complex carbonitrides in multicomponent microalloyed austenite

Journal Article · Thu Dec 15 04:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90450-2· OSTI ID:6935763

Xiaodong, Liu; Solberg, J K; Gjengedal, R ^[1]; Kluken, A O ^[2]

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1. NTH, Trondheim (Norway). Dept. of Metallurgy
2. SINTEF Metallurgy, Trondheim (Norway)

In view of the great interest in HSLA steels with small additions of titanium, niobium and/or vanadium, the solubility products of nitrides, carbides and carbonitrides in austenite have been investigated both theoretically and experimentally by many researchers. Nordberg and Aronsson first derived the solubility product for a complex carbonitride of a single microalloying element such as niobium, on which Hudd et al made some modifications. More recently, the complex addition of microalloying elements in HSLA steels has also received more attention. Clearly, the equilibrium composition of the precipitates depends on the composition of the steel and on the temperature. Some theoretical method have been derived to give this information, but none of them deal with the solubility product of complex carbonitrides containing more than one microalloying element (e.g. niobium and titanium). In the present paper, a general solubility product expression is derived for all kinds of complex carbonitrides with multicomponent microalloying additions.

• OSTI ID: 6935763
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:12; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
AUSTENITE
CARBON ADDITIONS
CARBON COMPOUNDS
CARBON NITRIDES
CHEMICAL COMPOSITION
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
LOW ALLOY STEELS
METALLURGICAL EFFECTS
METALS
MICROSTRUCTURE
NIOBIUM
NITRIDES
NITROGEN COMPOUNDS
PHASE STUDIES
PNICTIDES
PRECIPITATION
SEPARATION PROCESSES
STEELS
TITANIUM
TRANSITION ELEMENTS
VANADIUM