Abstract
The prediction of hardness distribution in the cross section of welded join made of S1100QL steel is performed in this study on the basis of analytical methods. Analytical CCT diagram and volume fraction of each phases of S1100QL steel as a function of cooling time t8/5 are determined. A numerical simulation of welding process is performed in ABAQUS. Thermal cycles and temperature field in welded joints are determined. Prediction of hardness distribution in the cross section of the joint is performed on the basis of obtained cooling times t8/5. Results of numerical simulations are compared with experimentally obtained results.
Highlights
Analytical models presented in paper concern to building simplified CCT diagrams, prediction the structure and evaluating mechanical properties on the basis on chemical composition of steel form the group of weldable steels [1,2,3,4,5,6]
The exemplary of prediction of hardness distribution in the cross section of flat butt welded by electric arc made of S100QL steel was performed in this study
Analytical CCT diagram of S1100QL steel was verified by experiment
Summary
Analytical models presented in paper concern to building simplified CCT diagrams, prediction the structure and evaluating mechanical properties on the basis on chemical composition of steel form the group of weldable steels [1,2,3,4,5,6]. Results of analytical methods are often used for the preliminary analysis of the properties of the material, which preceded the subsequent experimental studies and the development of mathematical models. Experimental researches are very expensive so researches are focused on the mathematical modeling of arising phenomena. Application of analytical methods to predict the structure and hardness distribution in the cross section of S1100QL steel were presented in paper. Application of highstrength steels allows to significantly reducing the weight of construction, increasing its load capacity. The demand for this kind of steels is still growing
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