On Modeling of Portevin - Le Chatelier Effect

Peter B. Béda

doi:10.4028/www.scientific.net/MSF.659.367

Paper Titles

Compositional and Stress-Sensitive Factors during the Thermopower Characterization of Single Phase Crystalline and Glassy Alloys
p.343

Grain Boundary Engineering of Metals by Thermo-Mechanical Treatment
p.349

Nondestructive Inspection of Ductile Cast Iron by Measurement of Minor Magnetic Hysteresis Loops
p.355

Textiles Dynamically Influenced Drapability
p.361

On Modeling of Portevin - Le Chatelier Effect
p.367

Study of Non-Monotonity of Forming Processes Using Finite Element Analysis
p.373

Parameter Identification Methods for Generalized Maxwell Models: Engineering Approach for Small-Strain Viscoelasticity
p.379

Approximation of the Temperature and Time Dependence of the Stress versus Rupture Life Curves by Power Functions
p.385

Creation and Use of Continuous Cooling (CC) Transformation Diagrams Based on Measured Data and T-t Elements
p.393

HomeMaterials Science ForumMaterials Science Forum Vol. 659On Modeling of Portevin - Le Chatelier Effect

On Modeling of Portevin - Le Chatelier Effect

Abstract:

There are several self-sustained oscillatory phenomena observed at plastic deformation of metals. One of them happens at the beginning of plastic behavior and leads to appearance of the famous Lüders-Hartmann bands. However, it can also be found self-sustained oscillations well beyond the yield stress like Portevin and Le Chatelier did in the early 20th century. This paper presents a simple model of that by using continuum approach and the theory of dynamical systems.