In-situ study of phase transformations during homogenization of 6060 and 6063 Al alloys

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405887" target="_blank" >RIV/00216208:11320/19:10405887 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JohuE8ys.M" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JohuE8ys.M</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpcs.2018.11.013" target="_blank" >10.1016/j.jpcs.2018.11.013</a>

Result language

angličtina

Original language name

In-situ study of phase transformations during homogenization of 6060 and 6063 Al alloys

Original language description

In as-cast 6xxx aluminium billets beta-Al5FeSi intermetallic phase and coarse Mg2Si particles have negative effects on subsequent processes such as extrusion. To achieve extruded products with a high surface quality the billets are heat-treated by a so-called homogenization before extrusion. During the heat treatment undesired intermetallic particles, i.e. beta-AlFeSi platelets, are transformed to rounded alpha-Al(FeMn)Si intermetallic particles. The transformations occurring during homogenization have up until now only been studied by interrupted experiments giving some insight into the process, but a complete picture of how these phase transformations are coupled to the geometrical changes has not evolved. In the present study transformations in 6060 and 6063 alloys have been observed in-situ by TEM, and several nucleation and growth modes have been identified. Boundary layer diffusion was found to be important for the understanding of how the transformations proceed, and also diffusion on the free surface contributed to higher transformation rates compared to industrial processes due to thin characteristics of TEM samples. Together with an earlier study of 6005 and 6082 alloys the homogenization process for all important industrial 6xxx alloys is now characterised in detail by in-situ monitoring.

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

2019

Confidentiality

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

Name of the periodical

Journal of Physics and Chemistry of Solids

ISSN

0022-3697

e-ISSN

—

Volume of the periodical

130

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

165-171

UT code for WoS article

000467669100020

EID of the result in the Scopus database

2-s2.0-85062641742