Abstract: The results of structural studies and assessment of the bending strength of a VKNA-4U alloy based on nickel aluminide are presented. It is for the first time that this alloy was produced by spark plasma sintering of mechanically activated powders of the starting components. The mechanical activation of the powders lasted for 1.5, 3.5, and 5min. X-ray diffraction analysis was performed to determine the optimal duration (3min 30 sec) of mechanical activation for this alloy. To obtain a dense low-defect workpiece, the VKNA-4U alloy was sintered at a heating temperature of 1100 °C, a pressure of 40MPa, and a holding time of 5min. This material has higher ultimate bending strength at room temperature (σbend= 1215 ± 65MPa) than the strength of Ni3Al intermetallic compound produced in similar conditions and microhardness 690 ± 25 HV.

Cite: Shevtsova L.I. , Esikov M.A. , Malikov V.N. , Kuz'min R.I.
Formation of VKNA-4U powder alloy using the SPS technology with preliminary mechanical activation
Metallurgist. 2024. V.68. N5. P.750-756. DOI: 10.1007/s11015-024-01781-8 WOS Scopus РИНЦ

Original: Шевцова Л.И. , Есиков М.А. , Маликов В.Н. , Кузьмин Р.И.
ФОРМИРОВАНИЕ ПОРОШКОВОГО СПЛАВА ВКНА-4У ПО ТЕХНОЛОГИИ SPS С ПРЕДВАРИТЕЛЬНОЙ МЕХАНОАКТИВАЦИЕЙ
Металлург. 2024. №5. С.95-100. DOI: 10.52351/00260827_2024_5_95 РИНЦ

Dates:

Submitted:	Mar 8, 2023
Accepted:	Jan 22, 2024
Published print:	Sep 5, 2024

Identifiers:

Web of science:	WOS:001307631300003
Scopus:	2-s2.0-85203548696
Elibrary:	74376867

Citing: Пока нет цитирований

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