Fracture locus characteristics of Al alloy 5083 processed by equal channel angular pressing using miniaturized specimens

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F21%3AN0000021" target="_blank" >RIV/26316919:_____/21:N0000021 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/abs/pii/S092583882103084X" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S092583882103084X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2021.161675" target="_blank" >10.1016/j.jallcom.2021.161675</a>

Result language

angličtina

Original language name

Fracture locus characteristics of Al alloy 5083 processed by equal channel angular pressing using miniaturized specimens

Original language description

After severe plastic deformation (SPD) processing, aluminum alloys show increased strength but low ductility. However, the ductility of the materials obtained during tensile tests does not reflect the full plastic deformation ability of the materials. This work presents the results of a more comprehensive plasticity analysis, which is applied first time to material after SPD processing. The current study considers an aluminum alloy 5083 before and after equal channel angular pressing (ECAP). The plasticity analysis was implemented based on the fracture locus, which was plotted in the space of the equivalent strain to fracture, the stress triaxiality parameter, and the Lode angle parameter using the Hosford-Coulomb (H-C) model. The parameters of the H-C model were determined using a combined experimental-numerical approach. It was found that the plasticity of the 5083 alloy strongly depended on a combination of the stress triaxiality and Lode angle parameter. However, the fracture locus of the material after ECAP processing showed slightly higher values of equivalent strain to fracture than that of the initial material. This approach makes it possible to estimate the ultimate plasticity of the materials after ECAP processing for a wide range of stress-strain states and can be used to predict fracture in plastic deformation processes. (c) 2021 Elsevier B.V. All rights reserved.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN

0925-8388

e-ISSN

1873-4669

Volume of the periodical

889

Issue of the periodical within the volume

DEC 31 2021

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

nestránkováno

UT code for WoS article

000706856800003

EID of the result in the Scopus database

2-s2.0-85113985722