Effect of Preliminary Treatment on Microstructure, Mechanical Properties and Fracture of Ni3Al Samples Synthesized by Spark Plasma Sintering

被引：0
作者：
D. A. Osipov
I. V. Smirnov
K. V. Grinyaev
A. D. Korotaev
Yu. P. Pinzhin
I. A. Ditenberg
M. A. Korchagin
M. A. Esikov
V. I. Mali
机构：
[1] Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences,
[2] National Research Tomsk State University,undefined
[3] Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the Russian Academy of Sciences,undefined
[4] Lavrientiev Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences,undefined
来源：
Russian Physics Journal | 2021年 / 64卷
关键词：
nickel-aluminum system; intermetallic Ni; Al; mechanical activation; spark plasma sintering; structure; mechanical properties;
D O I：
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中图分类号：
学科分类号：
摘要：
A comparative study of microstructure parameters and mechanical property characteristics of consolidated Ni3Al samples formed by spark plasma sintering after a preliminary short-term mechanical activation and mixing in a mortar is carried out. It is found out that the grain size of the mechanically pre-activated material is several times smaller than that of the material sintered after mixing in a mortar. This feature is manifested in the differences in the values of microhardness and short-term strength. The annealing temperature effect on the structure parameters and mechanical properties of Ni3Al samples is revealed depending on the pretreatment. It is assumed that the formation of a high-defect structural state, characterized by fine grains combined with an increased level of microdistortions, during mechanical activation predetermines the strength properties of the material both after spark plasma sintering and after deformation and heat treatment.
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页码：1460 / 1467
页数：7
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