Book Chapter10.1007/978-3-319-48191-3_2
Laser Welding between TWIP Steels and Automotive High-Strength Steels
Pasquale Russo Spena,Matteo Rossini,Luca Cortese,Paolo Matteis,Giorgio Scavino,Donato Firrao +5 more
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TL;DR: In this article, a dissimilar laser welding, without any filler metal, between a high-Mn austenitic sheet steel and some high strength steel grades, frequently employed in the fabrication of car body parts, is examined.
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Abstract: Car-bodies are increasingly made with advanced high-strength steels in order to reduce weight and improve passenger safety. High-manganese austenitic steels have been recently proposed for such an application, due to their excellent combination of strength and toughness. However, a widespread usage of these steels in the automotive industry is conditional on the development of effective welding methods to join high-Mn steels with other steel grades employed for adjacent car-body parts. Therefore, dissimilar laser welding, without any filler metal, between a high-Mn austenitic sheet steel and some high strength steel grades, frequently employed in the fabrication of car body parts, are examined here. The weldments are characterized by means of metallography, tensile and microhardness tests. Fractographic examination was carried out on the fracture surfaces of the tensile samples.
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Citations
FE thermo-mechanical simulation of welding residual stresses and distortion in Ti-containing TWIP steel through GTAW process
V. García-García,V. García-García,Ignacio Mejía,F. Reyes-Calderón,J. A. Benito,José-María Cabrera,José-María Cabrera +6 more
TL;DR: In this paper, a finite element (FE) thermo-mechanical model was employed to analyze the welding thermal cycle in the TWIP-Ti steel, and the numerical prediction of residual stress was validated by X-ray diffraction (XRD) measurements in welding critical regions.
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The effect of welding current on nugget geometry, microstructure and mechanical properties of TWIP steels in resistance spot welding
TL;DR: In this article, two twinning induced plasticity (TWIP) steels with different chemical compositions were produced by casting-hot rolling-cold rolling processes, and a total of four groups of samples were formed by obtaining cold-rolled and heat-treated samples giving optimum mechanical properties.
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References
Progress in the technology for the production of automobile sheet
TL;DR: Theoretical principles and applied research findings obtained by specialists at the I. P. Bardin Central Research Institute of Ferrous Metallurgy have allowed several Russian metallurgical plants to use oxygen converters for the mass production of high-quality automobile sheet that is competitive in the international market as discussed by the authors.
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Alkyldibenzothiophenes Hydrodesulfurization-Promoter Effect, Reactivity, and Reaction Mechanism
Frédéric Bataille,J.L. Lemberton,Philippe Michaud,Guy Perot,Michel Vrinat,Marc Lemaire,Emmanuelle Schulz,Michele Breysse,Slavik Kasztelan +8 more
TL;DR: In this article, the effect of Co or Ni on the HDS activity of Mo/alumina was studied by using dibenzothiophene (DBT) and 4,6-dimethyldibenzethiophene(46DMDBT), and the reaction was carried out at 340°C under a 4 MPa total pressure.
Dissimilar Arc Welding of Advanced High-Strength Car-Body Steel Sheets
TL;DR: In this paper, the microstructural features and the mechanical response of dissimilar butt weld seams of TWIP and 22MnB5 steel sheets after metal-active-gas arc welding are examined.
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