Computer multiscale simulation of TRIP-steel objects’ failure

• Main Authors: Konstantinov, D. V., Polyakova, M. A., Gulin, A. E.
• Format: Conference Proceeding
• Language: English
• Subjects: Martensitic transformations; Materials science; Microstructure; Modelling; Steel; TRIP steels
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0166319

One area of modern materials science is the creation of new steel grades with a complex combination of strength and plasticity properties. Steels with the TRIP effect interest researchers, since keep austenite in the metastable microstructure, and undergoes a martensitic transformation when an external load is applied. One of the key points of the study is the modeling of an object in applying an external load. The authors note that when modeling the behavior of an object, one should consider the features of the microstructure of the material from which the object is made. The change in the material’s microstructure during modeling can be considered using the concept of a statistically equivalent representative volumetric element. This allows a representative volume of material to be replaced by a smaller volume having similar morphology and similar behavior under load conditions. The article presents the results of modeling the behavior of objects of various shapes and sizes made of TRIP steel when various types of external loads are applied to them. The modeling was carried out by the authors before the destruction of the objects. The article provides a comparative analysis of the destruction of similar objects in their steel without the TRIP effect. Computer simulations have shown that objects made of TRIP steel can withstand large external loads compared to similar objects made of steel without the TRIP effect. The results can be useful for the development of technological processes for the production of parts from TRPI-steel, which are operated under difficult-loaded conditions.