Effect of Microstructure on High-Strength Low-Alloy Steel Welded Joint Toughness with Simulation of Heat-Affected Zone Coarse-Grained Area

Воркачев, К. Г.; Степанов, П. П.; Éfron, L. I.; Кантор, М. М.; Chastukhin, A. V.; Zharkov, S. V.

doi:10.1007/s11015-021-01067-3

Cited by 5 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[39] It is also known that the welding parameters also affect the prior austenite grains size, microstructure, and mechanical properties of the welded joints. [40][41][42][43] Therefore, the analysis of experimental welding processes cannot be abandoned and replaced with physical and numerical simulations. On the other hand, simulations support a detailed analysis of welded joints, especially in the context of the kinetics of the overlapping phase transformation.…”

Section: Discussionmentioning

confidence: 99%

The Microstructure Prediction during the Welding Process of Fe–C–Si Steel Using Physical and Numerical Simulation: A Comparative Study

Królicka

Zalecki

Kuziak

et al. 2022

steel research int.

View full text Add to dashboard Cite

Overall, medium‐carbon, multiphase steels subjected to welding processes can be described as difficult and require dedicated process conditions. In these investigations, an attempt is made to characterize the welding process of commercial 55Si7 steel with a high carbon equivalent (CE = 0.73). An experimental tungsten inert gas (TIG) welding process is performed by the use of preheating. Then, to understand and explain the processes during welding, a numerical (finite element method [FEM]) and physical (dilatometry) simulation is carried out. Measurement points located in the heat‐affected zone (HAZ) are selected based on the obtained data of thermal cycles. Significant differences in the results obtained with the three approaches are assessed and indicated. The cause of the discrepancies in the test results is also identified. The essence of the implementation of material data, which precisely defines the kinetics of phase transformation, is confirmed. A detailed analysis of the contribution of the phases is performed, together with their morphological assessment, as well as the hardness distributions are conscientiously compared. Moreover, it seems that the segregation of the chemical composition of austenite and the initial microstructure plays a crucial role in terms of the quality of the prediction.

show abstract