Structure and Properties of Sintered Alloys of the Aluminum–Chromium System
https://doi.org/10.17073/1997-308X-2015-3-4-10
Abstract
The results of the investigation into the influence of the sintering mode, morphology, and chemical composition of aluminum powders (ASD-1 and PA-1 brands) as well as the content of alloying additive (Cr) on regularities of sintering, structure, and physicomechanical properties of powder bodies of the Al–Cr system with the chromium content of 2,5–20 at.% during liquid-phase sintering at temperatures of 700–900 °C are presented. The sintering mode providing the fabrication of powder bodies with the conservation of the initial form is established. It is found that the application of ASD-1 aluminum powder makes it possible to fabricate more dense briquettes almost overall the studied range of sintering temperatures and provides the better sinterability of compacts, which is explained by its higher chemical purity, dispersity, and spherical shape of grains. Alloy of the composition Al–(2,5÷7,5) at.% Cr sintered at 700°C showed the best physicomechanical characteristics among all studied samples.
About the Authors
P. P. Tarasov
Северо-Восточный федеральный университет (СВФУ) им. М.К. Аммосова, г. Якутск
Russian Federation
Russian Federation
A. S. Syromyatnikova
Северо-Восточный федеральный университет (СВФУ) им. М.К. Аммосова, г. Якутск
Russian Federation
Russian Federation
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Review
For citations:
Tarasov P.P., Syromyatnikova A.S. Structure and Properties of Sintered Alloys of the Aluminum–Chromium System. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2015;(3):4-10. (In Russ.) https://doi.org/10.17073/1997-308X-2015-3-4-10
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