Creep and microstructure stability of different purity aluminium and its alloy processed by ECAP method

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F23%3A00583265" target="_blank" >RIV/68081723:_____/23:00583265 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1742-6596/2572/1/012004" target="_blank" >http://dx.doi.org/10.1088/1742-6596/2572/1/012004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/2572/1/012004" target="_blank" >10.1088/1742-6596/2572/1/012004</a>

Result language

angličtina

Original language name

Creep and microstructure stability of different purity aluminium and its alloy processed by ECAP method

Original language description

Severe plastic deformation (SPD) is a perspective method for preparation of ultrafine-grained materials. A coarse-grained aluminium with different purity and Al-0.2Sc alloy were processed by equal-channel angular pressing (ECAP) to evaluate the effect of severe plastic deformation on the thermal stability of resulting ultrafine-grained (UFG) microstructure and on creep behaviour of the SPD processed samples. These materials were subjected to ECAP up to 8 passes by route BC at room temperature with a die that had an internal angle of 90° between the two parts of the channel. The microstructural investigations were performed using transmission electron microscopy (TEM) and scanning electron microscopy (SEM) equipped with an electron back-scatter diffraction (EBSD) unit. Tension creep tests in constant load regime were conducted at temperature of 473 K on a both coarse-grained and UFG states of materials. It was found that creep behaviour of aluminium and its alloy is influences by their grain size, stability during creep test, material purity, solid solution and precipitate strengthening and fraction of high-angle grain boundaries development during ECAP process. While creep resistance of pure aluminium at elevated temperatures is improved already after 1 ECAP pass, further ECAP passes lead to degradation of creep life in case of low purity Al and Al-0.2Sc alloy.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GC20-14450J" target="_blank" >GC20-14450J: The damage evolution in ultrafine-grained metals and alloys under fatigue and creep loading</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Article name in the collection

Journal of Physics: Conference Series

ISBN

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ISSN

1742-6588

e-ISSN

1742-6596

Number of pages

6

Pages from-to

"Roč. 2572"

Publisher name

IOP Publishing

Place of publication

Bristol

Event location

Plzeň

Event date

Sep 6, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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