Session E: Nano-Structured Materials, Biomedical Materials and Materials SimulationNo Access

EFFECT OF SUBSTRATE THICKNESS ON NANOSTRUCTURE AND MECHANICAL PROPERTIES OF BULK NANOCRYSTALLINE Fe₃Al PREPARED BY ALUMINOTHERMIC REACTION

State Key Laboratory of GanSu Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, People's Republic of China

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LI WANG

State Key Laboratory of GanSu Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, People's Republic of China

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YANG ZHAO

State Key Laboratory of GanSu Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, People's Republic of China

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, and

CHUNJIE CHEN

State Key Laboratory of GanSu Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, People's Republic of China

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https://doi.org/10.1142/S0217979209061287Cited by:1 (Source: Crossref)

Abstract

Bulk nanocrystalline Fe₃Al materials were prepared by aluminothermic reaction on the substrates with different thickness of 5~15 mm. Grain size of the materials was measured by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Compressive strength and hardness of the materials were tested. The results showed the materials consisted of amorphous and nanocrystalline phases. With the substrate thickness increasing, amount of the nanocrystalline phase increased and that of the amorphous decreased and grain size of the nanocrystalline increased and a few grains in micrometer appeared in part areas of the materials. Yield strength and hardness of the materials remarkably decreased with the substrate thickness.

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