Effect of Temperature on the Structure and Mechanical Properties of Mechanically Alloyed Al-Nio Composite

Archives of Metallurgy and Materials

M. Zygmunt-Kiper¹  L. Blaz¹  M. Sugamata² 

[1] AGH - UNIVERSITY OF SCIENCE AND TECHNOLOGY, AL. A. MICKIEWICZA 30, 30-611 KRAKÓW, POLAND;NIHON UNIVERSITY, COLLEGE OF INDUSTRIAL TECHNOLOGY, 1-2-1 IZUMI-CHO, NARASHINO 275-8575, JAPAN

关键词: Keywords: Mechanical alloying;    Al-NiO;    metal matrix composite;    nanocrystalline material;    powder processing;    powder consolidation;    solid-state chemical reaction;    SEM;    STEM;    TEM;   

DOI  :  10.2478/amm-2014-0019

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Mechanical alloying of high-purity aluminum and 10 wt.% NiO powders combined with powder vacuum compression and following hot extrusion method was used to produce an Al-NiO composite. Mechanical properties of as-extruded materials as well as the samples annealed at 823 K /6 h, were tested by compression at 293 K - 770 K. High mechanical properties of the material were attributed to the highly refined structure of the samples. It was found that the structure morphology was practically not changed during hot-compression tests. Therefore, the effect of deformation temperature on the hardness of as-deformed samples was very limited. The annealing of samples at 823 K/6 h induced a chemical reaction between NiO-particles and surrounding aluminum matrix. As a result, the development of very fine aluminum oxide and Al3Ni grains was observed.

【 授权许可】

Unknown