Remote fibre laser welding of advanced high strength martensitic steel

Prijanovič, Urban (avtor), Tonkovič-Prijanovič, Marica (avtor), Trdan, Uroš (avtor), Pleterski, Matej (avtor), Jezeršek, Matija (avtor), Klobčar, Damjan (avtor)

The study presents the results of remote robotic laser welding of advanced high strength Docol$^®$ 1200 M martensitic steel. One mm thick samples were welded in a lap joint configuration using a special clamping system. Welding was done using a continuous-wave (CW) fibre laser with a constant welding power of 300 W and constant focus diameter Ø 1.8 mm. Welding was done using 12 different welding speeds in the range from 0.15 to 1 m/min, whereas the inclination angle was kept constant at 0°. The influence of various welding speeds and linear heat inputs during welding on microstructural changes were examined by the occurrence of acicular and allotriomorphic ferrite or martensite. Results revealed big influence of the clamping system on the accumulation of the laser beam energy, heat sink and consequently weld size and geometry, as well as its microstructure and joint strength. Tensile-shear strength, microstructure and hardness results confirmed laser power of 300 W and 0.6 m/min welding speed as the optimal parameters, at which a martensitic structure was obtained in the weld. The width of the heat affected zone (HAZ) in this case is 1100 µm.

• Jezik: Angleški jezik
• Ključne besede: advanced high-strength steel, laser welding, automotive industry, tensile-shear strength, hardness, heat affected zone (HAZ), microstructure
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 14 str.
• Številčenje: Vol. 10, iss. 4, art. 533
• PID: 20.500.12556/RUL-127261
• UDK: 621.791.725+620.17(045)
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met10040533
• COBISS.SI-ID: 17165571
• Datum objave v RUL: 31.05.2021

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 20.04.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: napredna visokotrdna jekla, lasersko varjenje, avtomobilska industrija, natezno-strižni test, trdota, toplotno vplivana cona, mikrostruktura