Effect of Nanoparticles on the Structure and Properties of Welds Made of High Strength Low-Alloy Steels
Journal Title: Biuletyn Instytutu Spawalnictwa - Year 2016, Vol 60, Issue 6
Abstract
The article presents test results concerning the structure of welds made of high strength low-alloy steel 14HGNDC which, in the molten state, was provided with nanoparticles of various refractory compounds including oxides, carbides and nitrides (TiC, TiN, SiC, VC, NbC, TiO₂, Al₂O₃, MgO and ZrO₂). The performed tests revealed the effective use of the nano-oxides of titanium (TiO₂) and zirconium (ZrO₂) enabling the obtainment of high mechanical properties of the weld metal (Rm –708 MPa and 621 MPa, KCV-₂₀ – 60 J/сm2 and 72,9 J/сm2, a – 21 and 19%). The use of a Gleeble 3800 welding cycle simulator made it possible to determine the dependence between temperature ranges of transformations, amount of structural constituents and types of modifying nanoparticles.
Authors and Affiliations
G. M. Grigorenko, Valery A. Kostin, Victor W. Golovko
Keywords
Related Articles
- EP ID EP257962
- DOI 10.17729/ebis.2016.6/9
- Views 67
- Downloads 0
Verification of Properties of Joints Made of Advances High Strength Steels in the Conditions of the Complex Thermal Cycles of the HPAW Process
The article discusses the primary issue related to the verification of properties of joints made in AHSS in relation to conventional structural steels and based on the identification of cooling time t8/5. The solution su...
Effect of Braze Welding Parameters on the Structure and Mechanical Properties of Joints Made of Steel CPW 800. Part 1: Arc Braze Welding
Presently, the reduction of kerb weight consists in the replacement of previously used structural materials with new ones, characterised by more favourable operating parameters. Advantageous mechanical properties of stee...
Effect of Excessively Wide Welds on the Fatigue Service Life of Welded Joints
Many a time, welded joints contain a welding imperfection having the form of an excessively wide butt weld with reference number 5212 in PN-EN ISO 6520-1. The fact that the effect of the above-named imperfection on the s...
Laser Beam Welding of 10 mm Thick T-joints Made of TMCP Steel
The article presents research on the laser beam welding of 10 mm thick T-joints made of thermomechanically worked high-strength steel S700MC without using a filler metal. The research-related tests involved making single...
Characteristics of Fusion Welded and Friction Welded Joints Made in High-Carbon Nanobainitic Steels
Intense research on the metallurgy of iron alloys have recently resulted in the development of technologies enabling the making of high-carbon nanobainitic steels. Because of their chemical composition, the above-named s...