Resistance of Heterogeneous Metal Compositions to Fracture under Dynamic and Cyclic Loads; Metals; Vol. 13, iss. 11

Resistance of Heterogeneous Metal Compositions to Fracture under Dynamic and Cyclic Loads; Metals; Vol. 13, iss. 11

Bibliografiske detaljer
Parent link:Metals.— .— Basel: MDPI AG
Vol. 13, iss. 11.— 2023.— Article number 1899, 11 p.
Institution som forfatter: Томский политехнический университет
Andre forfattere: Leshchinsky L. K. Leonid Konstantinovich, Ivanov V. P. Vitaly Petrovich, Lavrova E. V. Elena Vladimirovna, Ilyashchenko D. P. Dmitry Pavlovich
Summary:Title screen
This paper presents the results of experimental data analysis, which indicate an increased resistance of heterogeneous multilayer clad composites to dynamic loading destruction compared with homogeneous materials. The reason for this is the crack retardation caused by lamination at the boundary of the layers. The destruction of heterogeneous compact composite samples by cyclic off-center stretching also occurs with crack retardation, with the fractogram clearly demonstrating the transverse tightening of the sample section. We argue that crack nucleation plays a decisive role in the process of dynamic destruction of heterogeneous composites obtained by both multilayer cladding and explosion welding. This study presents generalized calculated data confirming the influence of the sign and magnitude of residual stresses (the appearance of a stress discontinuity) on the conditions of fatigue surface crack nucleation and propagation. Unlike homogeneous materials obtained by casting, forging (rolling), or cladding, which are characterized by a linear dependence of the crack propagation velocity on the dynamic stress intensity coefficient, for multilayer composites consisting of strong and viscous layers, a sharp crack deceleration is observed. This is due to the transition of the crack boundary between the strong and viscous layers. This paper presents studies of the corresponding properties of adjacent layers on the integral characteristics of the deposited composite.
Текстовый файл
Sprog:engelsk
Udgivet: 2023
Fag:
электронный ресурс
труды учёных ТПУ
dynamic and cyclic loading
cladding
multilayer composite
heterogeneity
fatigue
crack propagation rate
Online adgang:http://earchive.tpu.ru/handle/11683/132476
https://doi.org/10.3390/met13111899
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=673751

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