Abstract
Recrystallization at Crack Surfaces as a Specific Fracture Mechanism at Elevated Temperatures—Cellular Automata Simulation
Highlights
Over the last 50 years, the rapid development of aircraft and space technology as well as ever-increasing demands for equipment in the steel industry emerge new problems for the design of materials and structures operating under extreme conditions
Theoretical predictions based on microstructurally informed computer simulations are very relevant
We propose a hybrid discrete-continuum cellular automata approach based on coupling the classical thermomechanics and logics of cellular automata switching to simulate new phase generation and grain growth [3]
Summary
Over the last 50 years, the rapid development of aircraft and space technology as well as ever-increasing demands for equipment in the steel industry emerge new problems for the design of materials and structures operating under extreme conditions. Experimental studies of materials under extreme conditions and subsequent full-scale tests of semi-finished structures are very laborious and expensive. In this regard, theoretical predictions based on microstructurally informed computer simulations are very relevant. Simulations calculate numerically heat expansion in the material with account for thermal stresses accumulation and microrotation initiation The latter gives rise to the generation of new lattice defects and increasing the local entropy. In the present paper we focus on developing a new advanced modeling algorithm The latter ensures carrying out detailed studies of the processes related to rearrangement of the internal structure at the crack tip under intensive thermal loading. It should be noticed that, the stage of this study will be related to finding out the model parameters corresponding to physical characteristics of the specific material and comparison of the simulation results with experimental ones
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