Abstract
In the present study, V-shaped arc welding of the AISI 1045 steel is modeled by using 2D Finite Element Model (FEM). The temperature distribution, microstructure, grain growth, and the hardness of the heat-affected zone (HAZ) of the welding are simulated. The experimental work is carried out to validate the FE model. The very close agreement between the simulation and experimental results show that the FE model is very effective for predicting the microstructure, the phase transformation, the grain growth and the hardness. The effect of preheat temperature on the martensite formation is analysed, and it is shown that 225 °C preheating completely eliminates the martensite formations for the 12 mm thick plate.
Highlights
AISI 1045 steel is a medium carbon steel that is used for a wide range of engineering applications such as structural works, machine parts, gears studs, axels, cold extrude, etc
In most cases, parts are welded together to form permanent joints, but, due to its carbon content, the martensite phase is liable to form in the heat affected zone (HAZ) and may cause brittle fracture of the joint
A lot of researchers have explored the theoretical and experimental works to conclude the effects of welding parameters on the quality of the weldment
Summary
AISI 1045 steel is a medium carbon steel that is used for a wide range of engineering applications such as structural works, machine parts, gears studs, axels, cold extrude, etc. Tsai et al presented numerical modelling for analysis of the heat treatment on the properties of the magnesium alloy in Tungsten inert gas (TIG) welding. They found that increasing the Metals 2017, 7, 41; doi:10.3390/met7020041 www.mdpi.com/journal/metals. The properties of the magnesium alloy in Tungsten inert gas (TIG) welding They found of that increasing the time and temperature of tempering led to high tensile strength and elongation [4]. A46100 armor steel plates (low alloy carried out between the experimental work and the modelling for the microstructure evaluation steel) welded by AWS. Zhang et al.steel) modeled theby temperature and and micro-hardness on the MIL A46100 armor steel plates
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