Spark Plasma Sintering of a Gas Atomized Al7075 Alloy: Microstructure and Properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00468777" target="_blank" >RIV/61389021:_____/16:00468777 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/16:10335279

Result on the web

<a href="http://dx.doi.org/10.3390/ma9121004" target="_blank" >http://dx.doi.org/10.3390/ma9121004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma9121004" target="_blank" >10.3390/ma9121004</a>

Result language

angličtina

Original language name

Spark Plasma Sintering of a Gas Atomized Al7075 Alloy: Microstructure and Properties

Original language description

The powder of an Al7075 alloy was prepared by gas atomization. A combination of cellular, columnar, and equiaxed dendritic-like morphology was observed in individual powder particles with continuous layers of intermetallic phases along boundaries. The cells are separated predominantly by high-angle boundaries, the areas with dendritic-like morphology usually have a similar crystallographic orientation. Spark plasma sintering resulted in a fully dense material with a microstructure similar to that of the powder material. The continuous layers of intermetallic phases are replaced by individual particles located along internal boundaries, coarse particles are formed at the surface of original powder particles. Microhardness measurements revealed both artificial and natural ageing behavior similar to that observed in ingot metallurgy material. The minimum microhardness of 81 HV, observed in the sample annealed at 300 °C, reflects the presence of coarse particles. The peak microhardness of 160 HV was observed in the sample annealed at 500 °C and then aged at room temperature. Compression tests confirmed high strength combined with sufficient plasticity. Annealing even at 500 °C does not significantly influence the distribution of grain sizes—about 45% of the area is occupied by grains with the size below 10 µm.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

—

Project

<a href="/en/project/GA15-15609S" target="_blank" >GA15-15609S: Ultrafine-grained and nanocrystalline metals with high strength prepared by pulsed electric current sintering</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

12

Country of publishing house

CH - SWITZERLAND

Number of pages

15

Pages from-to

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UT code for WoS article

000390953400050

EID of the result in the Scopus database

2-s2.0-85007410618