Research for the Process of Forming the Metal during its Cyclic Deformation

Abstract:

Use the devices for the implementation of the combined casting process and deformation of non-ferrous alloys is a relatively new direction in the technology of materials processing by pressure. For an adequate description of the shaping processes implemented in such devices on the basis of certain mathematical models, experimental data on the energy-force parameters of deformation are required, as well as data for the nature of the distribution and intensity of deformations arising in the process during cyclic deformation of a metal product. The cyclical nature of the process of forming a metal product, coupled with large plastic deformations, does not allow directly using the traditional methods of experimental research of its stress-strain state adopted in the theory of metalworking by pressure. This gap is partly intended to fill by this study. The paper proposes a complex technique based on the registration (according to the electrical characteristics of the drive motor) of the instantaneous power of irreversible deformation for the material of a metal product. Prone to strain hardening in a cold state, a method for directly establishing the components of plastic deformation of the workpiece based on the method of rolled dividing grids with subsequent calculations according to Siebel's method. Analysis of the experimental results allows us to establish a qualitative picture of the deformation mechanism. The obtained experimental values are necessary for the verification of mathematical models and software systems for calculating the stress-strain state of materials under complex loading and finite deformations.

• Periodical: Materials Science Forum (Volume 1084)
• Pages: 67-72
• DOI: https://doi.org/10.4028/p-87z1w7
• Online since: April 2023
• Authors: V.V. Chernomas*, S.B. Maryin
• Keywords: Cyclic Complex Loading, Experimental Methods for Determining the Components of Plastic Deformation, Installation for Continuous Casting and Metal Deformation, Power of Irreversible Deformation

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