Zr as an Alternative Grain Refiner in the Novel AlSi5Cu2Mg Alloy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F24%3A00012837" target="_blank" >RIV/46747885:24210/24:00012837 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-4701/14/5/581" target="_blank" >https://www.mdpi.com/2075-4701/14/5/581</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met14050581" target="_blank" >10.3390/met14050581</a>

Result language

angličtina

Original language name

Zr as an Alternative Grain Refiner in the Novel AlSi5Cu2Mg Alloy

Original language description

Al-Si-Cu-Mg alloys are among the most significant types of aluminum alloys, accounting for 85-90% of all castings used in the automotive sector. These alloys are used, for example, in the manufacturing of engine blocks and cylinder heads due to their excellent specific strength (ratio of strength to specific weight) and superior castability and thermal conductivity. This study investigated the effect of using Zr as an alternative grain refiner in the novel AlSi5Cu2Mg cylinder head alloy. The microstructure of this alloy could not be refined via common Al-Ti-B grain refiners due to its specifically designed chemical composition, which limits the maximum Ti content to 0.03 wt.%. The results showed that the addition of Zr via the AlZr20 master alloy led to a gradual increase in the solidus temperature and to the grain refinement of the microstructure with the addition of as little as 0.05 wt.% Zr. The addition of more Zr (0.10, 0.15, and 0.20 wt.%) led to a gradual grain refinement effect for the alloy. The presence of Zr in the AlSi5Cu2Mg alloy was reflected in the formation of Zr-rich intermetallic phases with acicular morphology. Such phases acted as potent nucleants for the alpha-Al grain.

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

20500 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Metals

ISSN

2075-4701

e-ISSN

—

Volume of the periodical

14

Issue of the periodical within the volume

5

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

581

UT code for WoS article

001231592800001

EID of the result in the Scopus database

2-s2.0-85194276154