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N. B. Pugacheva, L. M. Zamaraev, A. S. Igumnov

STUDYING THE STRUCTURE AND PROPERTIES OF THE MATERIAL OF THE NODES A HONEYCOMB STRUCTURE AFTER DIFFUSION ALUMINIZING

DOI: 10.17804/2410-9908.2016.4.071-088

The paper presents results of studying the structure and properties of the material of the interfaces of a honeycomb structure after diffusion aluminizing. The structure is tightly rolled straight and corrugated Cr15Al5 alloy tapes, 55 µm thick, with a 2 mm thick outer jacket made of steel 12Cr18Ni10Ti. It is shown that, after aluminizing, the content of aluminum increases regularly through the tape thickness. It preserves the ferrite structure, in which there appear ordering domains of the В2-phase. The values of the temperature linear expansion coefficient for aluminized Cr15Al5 alloy and 12Cr18Ni10Ti steel samples have been obtained. The distributions of stresses in the nodes of the honeycomb structure arising at heating up to 600 °С and 900 °С have been obtained by the results of calculation on triangular finite element meshes in the elastic region. The stresses arising at heating in the majority of the nodes are shown to be compressive, the maximal tensile stresses being small.

Keywords: honeycomb structure, corrugated tape, steel, alloy, aluminide, diffusion welding, stress, strain, elastic modulus, finite element method

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Article reference

Pugacheva N. B., Zamaraev L. M., Igumnov A. S. Studying the Structure and Properties of the Material of the Nodes a Honeycomb Structure after Diffusion Aluminizing // Diagnostics, Resource and Mechanics of materials and structures. - 2016. - Iss. 4. - P. 71-88. -
DOI: 10.17804/2410-9908.2016.4.071-088. -
URL: http://eng.dream-journal.org/issues/content/article_90.html
(accessed: 05/22/2024).

 

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