AA 7075 ultrafine-grained alloy prepared by mechanical alloying and spark plasma sintering

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43915372" target="_blank" >RIV/60461373:22310/17:43915372 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

AA 7075 ultrafine-grained alloy prepared by mechanical alloying and spark plasma sintering

Original language description

Constantly increasing demands on mechanical properties lead to the search for new materials production technologies. The improvement could be achieved by methods of powder metallurgy, especially the ones capable to manufacture materials with ultra-fine microstructure. The aluminium alloy 7075, which belongs to the one of the strongest commercial aluminium alloys, was prepared by mechanical alloying in combination with spark plasma sintering. The thus-prepared samples were analysed (XRD, XRF, SEM-EDS, compression stress-strain test, Vickers hardness) and compared to its commercially produced equivalent (AA 7075). Mechanical alloying led to complete dissolution of all alloying elements in the aluminium solid solution. After SPS consolidation, the very fine intermetallic phase MgZn2 precipitated from the supersaturated solid solution and was distributed in the grain interior and at grain boundaries of the a-Al matrix. The very fine nature of the microstructure resulted in the increase of the compressive yield strength nearly 35 % to the commercial alloy and higher hardness.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GBP108%2F12%2FG043" target="_blank" >GBP108/12/G043: Interface controlled properties of micro/nanocrystalline materials for advanced structural applications, biodegradable implants and hydrogen storage</a><br>

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

Manufacturing Technology

ISSN

1213-2489

e-ISSN

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Volume of the periodical

17

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

6

Pages from-to

493-498

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85029556875