Studies on Microstructure and Mechanical Properties of Simulated Heat Affected Zone in a Micro Alloyed Steel
Creators
Description
Proper selection of welding parameters for getting
excellent weld is a challenge. HAZ simulation helps in identifying
suitable welding parameters like heating rate, cooling rate, peak
temperature, and energy input. In this study, the influence of weld
thermal cycle of heat affected zone (HAZ) is simulated for
Submerged Arc Welding (SAW) using Gleeble ® 3800 thermomechanical
simulator. A (Micro-alloyed) MA steel plate of thickness
18 mm having yield strength 450MPa is used for making test
specimens. Determination of the mechanical properties of weld
simulated specimens including Charpy V-notch toughness and
hardness is performed. Peak temperatures of 1300°C, 1150°C,
1000°C, 900°C, 800°C, heat energy input of 22KJ/cm and preheat
temperatures of 30°C have been used with Rykalin-3D simulation
model. It is found that the impact toughness (75J) is the best for the
simulated HAZ specimen at the peak temperature 900ºC. For parent
steel, impact toughness value is 26.8J at -50°C in transverse
direction.
Files
10003946.pdf
Files
(557.2 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:063f544a22bc5d4cb41a700e17d37f82
|
557.2 kB | Preview Download |
Additional details
References
- R Datta, D Mukerjee, K L Rohira, R Veeraraghavan, "Weldability evaluation of high tensile plates using GMAW process", Journal of Materials Engineering Performance, 8(4), 55–62, 1999.
- P Yayla, E Kaluc, K.Ural, "Effects of welding processes on the mechanical properties of HY 80 steel weldments", Materials and Design 28(1), 898–906, 2007.
- W.W Xu, Q. E Wang, T. Pan, H. Su, and C.E Yang, "Effect of Welding Heat Input on Simulated HAZ Microstructure and Toughness of a V-N Microalloyed Steel", Proceedings of Sino-Swedish Structural Materials Symposium, 234-239, 2007.
- A Ghosh, S. Das, S. Chatterjee, and P. Ramachandra Rao, "Effect of cooling rate on structure and properties of an ultra-low carbon HSLA- 100 grade steel", Materials Characterization, 56, 59–65, 2006.
- M. Shome, O.P. Gupta, and O.N. Mohanty, "Effect of Simulated Thermal Cycles on the Microstructure of the Heat-Affected Zone in HSLA-80 and HSLA-100 Steel Plates", Metallurgical and Materials Transactions A, 35A, 985-996, 2004.
- L.E. Svensson, "Control of Microstructures and Properties in Steel Arc Welds", CRC Press, Boca Raton, FL, 101-106, 1994.
- D. Radaj, "Heat Effects of Welding, Springer-Verlag Publications, Heidelberg", 100-103, 1992.
- Fatih Hayat, Huseyin Uzun, "Effect of Heat Treatment on Microstructure Mechanical Properties and Fracture Behaviour of Ship and Dual Phase Steels", Journal of iron and steel Research, International. 18(8), 65-72, 2011.
- N.N. Rykalin, "Calculation of Heat Flow in Welding Document", International Institute of Welding London, 212-350, 1974. [10] ASTM E 23 standard test methods for notched bar impact testing of metallic materials. [11] ASTM E92-82 standard test methods for vickers hardness of metallic materials. [12] Ernest C. Rollason, "Metallurgy for engineers", 1961.