Microstructures and Phases in Electron Beam Additively Manufactured Ti-Al-Mo-Zr-V/CuAl9Mn2 Alloy

Autor: Tarasov, Anna Zykova, Aleksandra Nikolaeva, Aleksandr Panfilov, Andrey Vorontsov, Alisa Nikonenko, Artem Dobrovolsky, Andrey Chumaevskii, Denis Gurianov, Andrey Filippov, Natalya Semenchuk, Nikolai Savchenko, Evgeny Kolubaev, Sergei
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Materials; Volume 16; Issue 12; Pages: 4279
ISSN: 1996-1944
DOI: 10.3390/ma16124279
Popis: Electron beam additive manufacturing from dissimilar metal wires was used to intermix 5, 10 and 15 vol.% of Ti-Al-Mo-Z-V titanium alloy with CuAl9Mn2 bronze on a stainless steel substrate. The resulting alloys were subjected to investigations into their microstructural, phase and mechanical characteristics. It was shown that different microstructures were formed in an alloy containing 5 vol.% titanium alloy, as well as others containing 10 and 15 vol.%. The first was characterized by structural components such as solid solution, eutectic intermetallic compound TiCu2Al and coarse grains of γ1-Al4Cu9. It had enhanced strength and demonstrated steady oxidation wear in sliding tests. The other two alloys also contained large flower-like Ti(Cu,Al)2 dendrites that appeared due to the thermal decomposition of γ1-Al4Cu9. This structural transformation resulted in catastrophic embrittlement of the composite and changing of wear mechanism from oxidative to abrasive.
Databáze: OpenAIRE
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