PSI - Issue 31

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 31 (2021) 58–63

© 2021 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 ICSID 2020 Organizers. Abstract Deformation and fracture in metal-matrix composite materials is investigated during cooling followed by tension or compression. Microstructure of the composite comprising aluminum matrix and single boron carbide particle of irregular experimentally observed shape – is taken into account explicitly in calculations. Constitutive models describe isotropic elastoplastic and elastic or elastic-brittle behavior of the aluminum matrix and ceramic particles, respectively. Huber type fracture criterion takes into consideration the crack origination and growth in material local regions experiencing bulk tension. Developed numerical method used to simulate three-dimensional geometry of ceramic particles assumes the invariance of the mechanical fragmentation of rocks and brittle materials. Three-dimensional and plane-stress boundary-value problems in the dynamic formulation are solved numerically by the finite-element software package ABAQUS. Deformation of the composite subjected to tension from the initial undeformed state is compared to that produced by tension being a successor of the composite cooling from the recrystallization to room temperatures. Residual thermal stresses are found to increase the strength of the composite and change the fracture patterns from in-particle cracking to debonding. © 2021 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 ICSID 2020 Organizers. Keywords: Microstructure-based numerical simulation; residual thermal stress; metal-matrix composites; plastic strain localization; fracture 4th International Conference on Structural Integrity and Durability, ICSID 2020 Computational analysis of the influence of thermal residual stresses on the strength of metal-matrix composites R. Balokhonov a, *, A. Zemlianov a,b , V. Romanova a , R. Bakeev a , E. Evtushenko a a Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, pr. Akademicheskii 2/4, 634055Tomsk, Russia b National Research Tomsk State University, pr. Lenina 36, 634050 Tomsk, Russia

* Corresponding author. Tel.: +7-960-969-2981; fax: +7 (3822) 49-25-76. E-mail address: rusy@ispms.ru

2452-3216 © 2021 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 ICSID 2020 Organizers.

2452-3216 © 2021 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 ICSID 2020 Organizers. 10.1016/j.prostr.2021.03.025