PSI - Issue 65

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2024) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2024) 000–000 Available online at www.sciencedirect.com

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 65 (2024) 255–262

The 17th International Conference on MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS 2023) Simulating the rheological behavior of the V95\3% TiC metal matrix composite under deformation at high temperatures The 17th International Conference on MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS 2023) Simulating the rheological behavior of the V95\3% TiC metal matrix composite under deformation at high temperatures

A.S. Smirnov*, A.V. Konovalov,V.S. Kanakin and I.A. Spirina Institute of Engineering Science, UB RAS, 34 Komsomolskaya St., 620049 Ekaterinburg, Russia A.S. Smirnov*, A.V. Konovalov,V.S. Kanakin and I.A. Spirina Institute of Engineering Science, UB RAS, 34 Komsomolskaya St., 620049 Ekaterinburg, Russia

Abstract Abstract

The paper describes the rheological behavior of a composite with a matrix of the V95 alloy (the Russian analog of the 7075 alloy) and a volume content of titanium carbide particles equal to 3%. The rheological behavior is described by a structural phenomenological model. The composite is made by a liquid-phase technology with an average particle size of TiC equal to 7.5 µm. The model identification is based on the results of compression experiments at temperatures of 300, 400, and 500 °C, with a strain rate ranging between 0.1 and 5 s 1 during compression. The model is used to simulate flow stress curves at constant strain rates. This reveals that, at temperatures of 300, 400, and 500 °C, in the range of strain rates from 0.1 to 10 s 1 softening processes actively occur, leading to the appearance of peaks and a steady-state section on the flow stress curves. © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Keywords: viscoplastic model; flow stress; strain; high temperature; metal matrix composite; rheology. The paper describes the rheological behavior of a composite with a matrix of the V95 alloy (the Russian analog of the 7075 alloy) and a volume content of titanium carbide particles equal to 3%. The rheological behavior is described by a structural phenomenological model. The composite is made by a liquid-phase technology with an average particle size of TiC equal to 7.5 µm. The model identification is based on the results of compression experiments at temperatures of 300, 400, and 500 °C, with a strain rate ranging between 0.1 and 5 s 1 during compression. The model is used to simulate flow stress curves at constant strain rates. This reveals that, at temperatures of 300, 400, and 500 °C, in the range of strain rates from 0.1 to 10 s 1 softening processes actively occur, leading to the appearance of peaks and a steady-state section on the flow stress curves. © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers Keywords: viscoplastic model; flow stress; strain; high temperature; metal matrix composite; rheology. © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers

1. Introduction 1. Introduction

Modern aircraft engineering requires an increase in the specific mechanical characteristics of structures. In this regard, composite materials are being increasingly used in the aerospace industry, which have higher specific mechanical properties compared to alloys and polymers (Chawla, 2012). These materials include dispersion strengthened metal matrix composites. An alloy is the matrix in these composites, with reinforcing particles Modern aircraft engineering requires an increase in the specific mechanical characteristics of structures. In this regard, composite materials are being increasingly used in the aerospace industry, which have higher specific mechanical properties compared to alloys and polymers (Chawla, 2012). These materials include dispersion strengthened metal matrix composites. An alloy is the matrix in these composites, with reinforcing particles

* Corresponding author. Tel.: +7-343-375-3589; fax: +7-343-374-5330. E-mail address: smirnov@imach.uran.ru * Corresponding author. Tel.: +7-343-375-3589; fax: +7-343-374-5330. E-mail address: smirnov@imach.uran.ru

2452-3216 © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers 2452-3216 © 2024 The Authors, Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of MRDMS 2023 organizers 10.1016/j.prostr.2024.11.038