Microstructural evolution and mechanical properties of high purity aluminium processed by equal-channel angular pressing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00377776" target="_blank" >RIV/68081723:_____/08:00377776 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.2320/matertrans.ME200719" target="_blank" >http://dx.doi.org/10.2320/matertrans.ME200719</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2320/matertrans.ME200719" target="_blank" >10.2320/matertrans.ME200719</a>

Result language

angličtina

Original language name

Microstructural evolution and mechanical properties of high purity aluminium processed by equal-channel angular pressing

Original language description

High purity (99.999%) Al was subjected to ECAP for up to 8 passes through route BC. Hardness measurements and tensile tests were conducted at room temperature with respect to the number of ECAP passes. It is shown that the hardness and the tensile strength increased to take a maximum at 2 passes. However, unusual behaviour was observed such that further straining by ECAP for more than 2 passes decreased the hardness and tensile strength. Microstructural observation revealed that straining by ECAP for 2passes led to the development of a subgrain structure having dislocations within some subgrains and tangled dislocations near subgrain boundaries. After 8 passes, the grains became larger and the grain boundaries sharpened and clearly defined. It is considered that the high dislocation mobility arising from high stacking fault energy and very low level of impurities were responsible for the unusual tensile behaviour and the difficulty in reducing the grain size.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

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

Name of the periodical

Materials Transactions

ISSN

1345-9678

e-ISSN

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Volume of the periodical

49

Issue of the periodical within the volume

1

Country of publishing house

JP - JAPAN

Number of pages

5

Pages from-to

15-19

UT code for WoS article

000253442100004

EID of the result in the Scopus database

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