Welding of Thermomechanically Rolled Steel by Yb:YAG Disk Laser

• Autorzy: Lisiecki A.

Identyfikatory

DOI

10.1515/amm-2015-0456

Warianty tytułu

PL

Spawanie stali walcowanej termomechanicznie laserem dyskowym Yb:YAG

• Języki publikacji: EN

Abstrakty

EN

Autogenous laser welding of 5.0 mm thick butt joints of thermomechanically rolled steel S700MC was investigated. The Yb:YAG disk laser TruDisk 3302 emitted at 1.03 μm was used for the trials of autogenous welding. The effect of laser welding parameters and thus thermal conditions of welding on weld shape, microstructure of weld metal and heat affected zone (HAZ), tensile strength, bending angle, impact toughness and microhardness profile was determined. Studies have shown that it is advantageous to provide a high welding speed and low heat input. High cooling rate of weld metal and HAZ leads to the formation of a favorable structure characterized by a large proportion of fine-grained acicular ferrite and provides high mechanical properties of butt joints.

PL

W artykule opisano wyniki badań procesu spawania laserowego bez materiału dodatkowego złączy doczołowych o grubości 5.0 mm ze stali walcowanej termomechanicznie S700MC. Próby spawania wykonano za pomocą lasera dyskowego Yb:YAG TruDisk 3302, który emituje promieniowanie o długości fali 1.03 μm. Badano wpływ parametrów spawania laserowego, a głównie warunków cieplnych procesu spawania na kształt ściegu spoiny, mikrostrukturę metalu spoiny i strefy wpływu ciepła (SWC), wytrzymałość na rozciąganie, kąt gięcia, udarność oraz rozkład mikrotwardości. Wyniki badań wskazują, że korzystne jest zapewnienie dużej prędkości spawania przy jednocześnie niskiej energii liniowej spawania. Duże szybkości stygnięcia metalu spoiny i SWC prowadzą do utworzenia korzystnej drobnoziarnistej struktury o dużym udziale ferrytu drobno płytkowego, co zapewnia wysokie właściwości mechaniczne złączy doczołowych.

Słowa kluczowe

EN

thermomechanically rolled steel; welding; disk laser

PL

walcowanie termomechaniczne; spawanie; laser dyskowy

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2015
• Tom: Vol. 60, iss. 4
• Strony: 2851--2860
• Opis fizyczny: Bibliogr. 34 poz., rys.

Twórcy

autor

Lisiecki A.

• Silesian University of Technology, Faculty of Mechanical Engineering, Welding Department, 18A Konarskiego Str., 44-100 Gliwice, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.