Analysis of realistic heterogeneous welds of heat resistant steels by means of experimental and computational techniques

HODIS, Zdeněk, Vít JAN, Jiří SOPOUŠEK a Rudolf FORET. Analysis of realistic heterogeneous welds of heat resistant steels by means of experimental and computational techniques. In CALPHAD XXXVIII (May 17-22, 2009). 2009.

Základní údaje

• Originální název: Analysis of realistic heterogeneous welds of heat resistant steels by means of experimental and computational techniques
• Název česky: Analýza reálných heterogenních svarů žáropevných ocelí pomocí experimentálních a výpočtových technik
• Název anglicky: Analysis of realistic heterogeneous welds of heat resistant steels by means of experimental and computational techniques
• Autoři: HODIS, Zdeněk (203 Česká republika, garant), Vít JAN (203 Česká republika), Jiří SOPOUŠEK (203 Česká republika, domácí) a Rudolf FORET (203 Česká republika).
• Vydání: CALPHAD XXXVIII (May 17-22, 2009), 2009.

Další údaje

• Originální jazyk: čeština
• Typ výsledku: Konferenční abstrakt
• Obor: 10403 Physical chemistry
• Stát vydavatele: Slovensko
• Utajení: není předmětem státního či obchodního tajemství
• Kód RIV: RIV/00216224:14310/09:00051150
• Organizační jednotka: Přírodovědecká fakulta
• Klíčová slova česky: CALPHAD; svar; fázové diagramy
• Klíčová slova anglicky: CALPHAD; weld; phase diagram
• Štítky: CALPHAD, IK, Phase diagram, rivok, weld
• Příznaky: Mezinárodní význam

Anotace

Two alternative composite welds were manufactured by GTAW technology according to standard technological procedures. The welds connected two base materials with different chromium content using high chromium intermediate layer and low alloyed main weld consumable material. Experimental analysis was carried out on weld samples after PWHT and on samples annealed up to 1000 hours at 650stC. Microhardness and chemical profiles of interstitial and substitutional elements across all weld interfaces in the samples were measured. Phase diagrams, activity values for diffusing elemnts for all materials used in the welds were calculated by ThermoCalc using Steel16 database. Phase and chemical profiles for all interfaces in the welds after heat treatment and annealing were also calculated using DICTRA and Steel16 and Dif databases. Non-linear starting chemical profiles were used for the kinetic simulations to modell the mixing during realistic welding. The results of the simulations agree well with all experimental results.

Anotace anglicky

Two alternative composite welds were manufactured by GTAW technology according to standard technological procedures. The welds connected two base materials with different chromium content using high chromium intermediate layer and low alloyed main weld consumable material. Experimental analysis was carried out on weld samples after PWHT and on samples annealed up to 1000 hours at 650stC. Microhardness and chemical profiles of interstitial and substitutional elements across all weld interfaces in the samples were measured. Phase diagrams, activity values for diffusing elemnts for all materials used in the welds were calculated by ThermoCalc using Steel16 database. Phase and chemical profiles for all interfaces in the welds after heat treatment and annealing were also calculated using DICTRA and Steel16 and Dif databases. Non-linear starting chemical profiles were used for the kinetic simulations to modell the mixing during realistic welding. The results of the simulations agree well with all experimental results.

Návaznosti

• MSM0021622410, záměr: Název: Fyzikální a chemické vlastnosti pokročilých materiálů a struktur

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Fyzikální a chemické vlastnosti pokročilých materiálů a struktur