Thermal stability of Ni3Al microstructure and microhardness after spark plasma sintering

被引：0
|
作者：
Ditenberg, Ivan A. [1 ]
Osipov, Denis A. [1 ]
Smirnov, Ivan [1 ]
Grinyaev, Konstantin V. [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Strength Phys & Mat Sci, Tomsk 634055, Russia
来源：
INTERMETALLICS | 2024年 / 164卷
关键词：
IntermetallicNi3Al; High-energy ball milling; Spark plasma sintering; Microstructure; Microhardness; Thermal stability; ALLOYS;
D O I：
10.1016/j.intermet.2023.108105
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of high-temperature annealing on the structural-phase state and microhardness of Ni3Al samples obtained by spark plasma sintering after high-energy ball milling has been studied. Using X-ray diffraction analysis, scanning and transmission electron microscopy, a comparative study of the features of the structural -phase state of Ni3Al samples depending on the duration of preliminary high-energy ball milling and annealing temperature was carried out. Temperatures have been identified that ensure simultaneous grain growth at a high density of nuclei, which contributes to the formation of a fine-grained structural state. Depending on the state of the material, the corresponding microhardness values have been determined. The influence of the annealing temperature on the strengthening mechanisms has been analyzed.
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