The Effects of Composition of Shielding Gas Mixture on the Microstructure and Toughness of Microalloyed Steel Weld Metal

Izdanje: Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research

DOI: 10.15308/Sinteza-2016-226-229

Link: https://doi.org/10.15308/Sinteza-2016-226-229

Apstrakt:
It has been established that in weld metal of microalloyed steel the ferritic structure dominates, occurring in different morfologic forms. Acicular ferrite is the most desirable morphology of ferrite, so this paper analyses influence of the composition of gas mixture on the ferrite modification in the weld metal, specially on the morphology of acicular ferrite. At the same time, this morphological form of ferrite is very significant, because it has great influence on the mechanical properties, toughness specially. Five different gas mixtures (Ar,CO2,O2) were used to determine the optimal gas shielded metal arc process. For investigated microalloyed steel, the optimum gas mixture has been established (5% CO2, 0.91% O2, balance Ar), providing maximum impact energy due to microstructure, consisting dominantly of acicular ferrite.
Ključne reči: microstructure, toughness, microalloyed steel, mixture of shielded gases, acicular ferrite

Preuzimanje citata:

BibTeX format
@article{article,
  author  = {O. Popović, R. Prokić - Cvetković, N. Milošević and D. Cvetković}, 
  title   = {The Effects of Composition of Shielding Gas Mixture on the Microstructure and Toughness of Microalloyed Steel Weld Metal},
  journal = {Sinteza 2016 - International Scientific Conference on ICT and E-Business Related Research},
  year    = 2016,
  doi     = {10.15308/Sinteza-2016-226-229}
}
RefWorks Tagged format
RT Conference Proceedings
A1 Olivera Popović
A1 Radica Prokić - Cvetković
A1 Nenad Milošević
A1 Dragan Cvetković
T1 The Effects of Composition of Shielding Gas Mixture on the Microstructure and Toughness of Microalloyed Steel Weld Metal
AD International Scientific Conference Sinteza, Beograd, Srbija
YR 2016
NO doi: 10.15308/Sinteza-2016-226-229
Unapred formatirani prikaz citata
O. Popović, R. Prokić - Cvetković, N. Milošević and D. Cvetković, The Effects of Composition of Shielding Gas Mixture on the Microstructure and Toughness of Microalloyed Steel Weld Metal, International Scientific Conference Sinteza, 2016, doi:10.15308/Sinteza-2016-226-229