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RESPONSE OF HOT ROLLED AL-ZN-MG-CU-(SC-ZR) ALLOYS TO ANNEALING WITH CONSTANT HEATING RATE

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10404954" target="_blank" >RIV/00216208:11320/19:10404954 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    RESPONSE OF HOT ROLLED AL-ZN-MG-CU-(SC-ZR) ALLOYS TO ANNEALING WITH CONSTANT HEATING RATE

  • Original language description

    In the present work hot rolled AlZnMgCu alloys with and without Sc,Zr addition were studied. First, the temperature and time of annealing of hot rolling was looking for. Then, precipitation reactions of hot rolled alloys were studied by differential scanning calorimetry and microhardness measurements during annealing from room temperature up to 450 °C. These measurements were compared to microstructure development that was observed by scanning electron microscope and by electron backscattered diffraction. The grain size was ~ 20 microm in the AlZnMgCuScZr and ~ 1000 microm in the AlZnMgCu alloy. Microstructure observation proved eutectic phase at (sub)grain boundaries. Primary multilayer Al3(Sc,Zr) particles also precipitated during casting and subsequent cooling in the alloy with Sc,Zr addition. These particles were observed in the alloy with Sc,Zr addition after annealing up to 450 °C, too. In the DSC curves the exothermic process at ~ 200 °C was observed. Activation energy of the process was calculated. There were observed constant values of microhardness (in accuracy of measurements) during annealing up to 450 °C. Higher microhardness values were measured in the alloy with Sc,Zr addition.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

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

Result continuities

  • Project

    <a href="/en/project/GA17-17139S" target="_blank" >GA17-17139S: Direct and indirect influence of Sc and Zr on early precipitation stages in advanced lightweight structural Al alloys</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    Conference proceedings

  • ISBN

    978-80-87294-92-5

  • ISSN

  • e-ISSN

  • Number of pages

    6

  • Pages from-to

    1541-1546

  • Publisher name

    Tanger Ltd.

  • Place of publication

    Ostrava

  • Event location

    Brno

  • Event date

    May 22, 2019

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article