In-situ study of phase transformations during homogenization of 6005 and 6082 Al alloys

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10371395" target="_blank" >RIV/00216208:11320/17:10371395 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jallcom.2017.07.149" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2017.07.149</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2017.07.149" target="_blank" >10.1016/j.jallcom.2017.07.149</a>

Result language

angličtina

Original language name

In-situ study of phase transformations during homogenization of 6005 and 6082 Al alloys

Original language description

Intermetallic beta-Al5FeSi phase and coarse Mg2Si particles have negative effects on extrudability and workability of 6xxx Al alloy billets. To achieve extruded products with a high surface quality as-cast billets are therefore heat-treated before extrusion. During heat treatment the undesired intermetallic particles, i.e., beta-AlFeSi platelets, are transformed to a rounded alpha-Al(FeMn) Si intermetallic phase. This transformation was studied in-situ by TEM for 6005 and 6082 Al alloys. It was observed that the Mg2Si particles precipitate in the Al matrix at about 250 degrees C; this precipitation also occurred at the edge and faces of beta intermetallic particles, and the Mg2Si particles were the preferred sites for alpha-Al(FeMn) Si particle nucleation. The transformation proceeded faster and at lower temperatures, 350-450 degrees C, than what has been reported earlier for homogenization studies of bulk samples and industrial billets. This could be associated with the thin characteristic of used samples in TEM giving contribution from fast surface diffusion, but it was also concluded that the phase boundary layer diffusion was important for the understanding of how the transformations proceed.

Czech name

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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

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

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

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Volume of the periodical

725

Issue of the periodical within the volume

listopad

Country of publishing house

CH - SWITZERLAND

Number of pages

6

Pages from-to

504-509

UT code for WoS article

000412332900058

EID of the result in the Scopus database

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