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.

引用

页数：7

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