Simulation of Carbide/Nitride Precipitation in 3%Cr1%Mo/P91
Steel Weldment At Temperature Range 700-575oC

D 2002

Simulation of Carbide/Nitride Precipitation in 3%Cr1%Mo/P91 Steel Weldment At Temperature Range 700-575oC

JAN, Vít a Jiří SOPOUŠEK

Základní údaje

Originální název

Simulation of Carbide/Nitride Precipitation in 3%Cr1%Mo/P91 Steel Weldment At Temperature Range 700-575oC

Autoři

JAN, Vít (203 Česká republika) a Jiří SOPOUŠEK (203 Česká republika, garant)

Vydání

Roma, Thermodynamics of Alloys TOFA 2002, od s. PO55, 1 s. 2002

Nakladatel

Universita di Roma "La Sapiensa"

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10403 Physical chemistry

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/02:00006364

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

DICTRA;ThernoCalc;phase;diffusion;CALPHAD

Štítky

CALPHAD, DICTRA, Diffusion, phase, ThernoCalc

Změněno: 16. 9. 2002 16:37, prof. RNDr. Jiří Sopoušek, CSc.

Anotace

V originále

The study the relationships among the element redistributions, the microstructure at various positions across the weldments, and local mechanical properties represents the basic source for advanced design of stable welds of dissimilar alloys. The kinetics of phase transformations in diffusion-affected zone determine weld stability in many cases. The processes in welded joint of progressive steel P91 (8,5wt% Cr -0,88%Mo-0,23%V-0,045%N-0,1%C) and 3Cr1Mo electrode (2,73wt%Cr-0,96%Mo-0,12%C) were simulated using combination of CALPHAD method(1) and the same method as can be found in DICTRA programme(2, 3, 4) . The thermodynamic database STEEL11.TDB(5) and mobility database DIF12.TDB(6) were applied for the simulations of the weldments at long treatment . This two databases were developed in Brno and they are assessed for calculation of phase diagrams and the simulations of the weldments at temperatures about 500oC too. The equilibrium calculations using CALPHAD method allowed us to predict phase diagrams for both 3Cr1Mo and P91 steels. The diffusion and phase transformation processes occurred in 3Cr1Mo/P91 welded join were simulated using DICTRA programme. It enabled us to evaluate time-distance dependences for phase compositions and element redistribution in diffusion-affected zone at temperature range 700-575oC. This simulation results at different temperatures are complemented with experimental results. The most interesting results concern carbonitride, and high molybdenium carbide phase transformations. The described method can be used for weldments design.

Návaznosti

GA106/00/0855, projekt VaV

Název: Kinetika precipitace karbidů v Cr-Mo ocelích

Investor: Grantová agentura ČR, Kinetika precipitace karbidů v Cr-Mo ocelích

Citovat

JAN, Vít a Jiří SOPOUŠEK. Simulation of Carbide/Nitride Precipitation in 3%Cr1%Mo/P91 Steel Weldment At Temperature Range 700-575oC. In Thermodynamics of Alloys TOFA 2002. Roma: Universita di Roma "La Sapiensa", 2002, s. PO55, 1 s.

@inproceedings{405165,
   author = {Jan, Vít and Sopoušek, Jiří},
   address = {Roma},
   booktitle = {Thermodynamics of Alloys TOFA 2002},
   keywords = {DICTRA;ThernoCalc;phase;diffusion;CALPHAD},
   language = {eng},
   location = {Roma},
   pages = {PO55},
   publisher = {Universita di Roma "La Sapiensa"},
   title = {Simulation of Carbide/Nitride Precipitation in 3%Cr1%Mo/P91 Steel Weldment At Temperature Range 700-575oC},
   year = {2002}
}

TY  - JOUR
ID  - 405165
AU  - Jan, Vít - Sopoušek, Jiří
PY  - 2002
TI  - Simulation of Carbide/Nitride Precipitation in 3%Cr1%Mo/P91 Steel Weldment At Temperature Range 700-575oC
PB  - Universita di Roma "La Sapiensa"
CY  - Roma
KW  - DICTRA;ThernoCalc;phase;diffusion;CALPHAD
N2  - The study the relationships among the element redistributions, the microstructure at various positions across the weldments, and local mechanical properties represents the basic source for advanced design of stable welds of dissimilar alloys. The kinetics of phase transformations in diffusion-affected zone determine weld stability in many cases. The processes in welded joint of progressive steel P91 (8,5wt% Cr -0,88%Mo-0,23%V-0,045%N-0,1%C) and 3Cr1Mo electrode (2,73wt%Cr-0,96%Mo-0,12%C) were simulated using combination of CALPHAD method(1) and the same method as can be found in DICTRA programme(2, 3, 4) . The thermodynamic database STEEL11.TDB(5) and mobility database DIF12.TDB(6) were applied for the simulations of the weldments at long treatment . This two databases were developed in Brno and they are assessed for calculation of phase diagrams and the simulations of the weldments at temperatures about 500oC too. The equilibrium calculations using CALPHAD method allowed us to predict phase diagrams for both 3Cr1Mo and P91 steels. The diffusion and phase transformation processes occurred in 3Cr1Mo/P91 welded join were simulated using DICTRA programme. It enabled us to evaluate time-distance dependences for phase compositions and element redistribution in diffusion-affected zone at temperature range 700-575oC. This simulation results at different temperatures are complemented with experimental results. The most interesting results concern carbonitride, and high molybdenium carbide phase transformations. The described method can be used for weldments design.
ER  -

JAN, Vít a Jiří SOPOUŠEK. Simulation of Carbide/Nitride Precipitation in 3\%{}Cr1\%{}Mo/P91 Steel Weldment At Temperature Range 700-575oC. In \textit{Thermodynamics of Alloys TOFA 2002}. Roma: Universita di Roma ''La Sapiensa'', 2002, s.~PO55, 1 s.

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