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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

889

Číslo periodika v rámci svazku

DEC 31 2021

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

nestránkováno

Kód UT WoS článku

000706856800003

EID výsledku v databázi Scopus

2-s2.0-85113985722