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S. V. Smirnov, I. A. Veretennikova

COMPARATIVE EVALUATION OF METAL DAMAGE ON THE FREE LATERAL SURFACE OF SINGLE-LAYER AND THREE-LAYER STRIPS UNDER ROLLING

DOI: 10.17804/2410-9908.2015.4.006-017

The paper compares the stress-strain state and damage accumulation in a steel constituting a “steel 20” single-layer strip and “12Cr18Ni10Ti – steel 20 – 12Cr18Ni10Ti” and “copper M1 – steel 20 – copper M1” three-layer strips under rolling. The areas in the middle of the free lateral surface that are the most dangerous in terms of cohesive destruction are discussed. The finite el-ement method is used to simulate the rolling process. Kolmogorov’s model of damage and the relation of peak plasticity to the stress state coefficient and the Lode coefficient are used for cal-culations. The analysis of the data shows a relationship between the configuration of the defor-mation zone and metal deformability. In particular, it is better to roll strips of steel 20 in large-diameter rolls and “copper M1 – steel 20 – copper M1” strips in small-diameter rolls. When “12Cr18Ni10Ti – steel 20 – 12Cr18Ni10Ti” strips ate rolled, the diameter of rolls has no essential effect on damage accumulation in the central layer. The proposed conclusions can be used only for the materials under study, since the mechanisms of damage accumulation for specific materials may vary depending on the peak plasticity diagram.

Keywords: multilayer metal, rolling, stress-strain state, damage

References:

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  14. Smirnova S.V., Gladkovsky S.V. Mechanical properties and peculiarities of the fracture of layered metal composites after explosion welding and pack rolling. Aktualnye problemy sovremennoy nauki: Trudy 5-go Mezhdunarodnogo foruma. Yestestvennye nauki. Chasti 1–3: Matematika. Matematicheskoe modelirovanie. Mekhanika, 2010, pp. 214–218. (In Russian).


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Article reference

Smirnov S. V., Veretennikova I. A. Comparative Evaluation of Metal Damage on the Free Lateral Surface of Single-Layer and Three-Layer Strips under Rolling // Diagnostics, Resource and Mechanics of materials and structures. - 2015. - Iss. 4. - P. 6-17. -
DOI: 10.17804/2410-9908.2015.4.006-017. -
URL: http://eng.dream-journal.org/issues/content/article_39.html
(accessed: 05/22/2024).

 

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Founder:  Institute of Engineering Science, Russian Academy of Sciences (Ural Branch)
Chief Editor:  S.V. Smirnov
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