On the Fractography and Some Strength Properties of Fe-Based Sintered Materials with Multicomponent Oxide Microadditives
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Institute of Mechanical Engineering and Machine Operation, University of Zielona Góra, ul. Prof. Z. Szafrana 4, 65-516, Zielona Góra, Poland
Powder Metallurgy Institute, Belarusian National Academy of Sciences, ul. Platonova 41, 220005 Minsk, Belarus
Online publication date: 2019-12-04
Publication date: 2019-12-01
International Journal of Applied Mechanics and Engineering 2019;24(4):224-229
In the present paper, the effect of alumina and zirconia microadditives on the compressive strength and flexural strength of sintered Fe-based powder materials is shown. It was found that intercrystalline fractures, both plastic and brittle, are observed when bending. During compression, fractures are observed too, as well as flaking of thin near-surface layers. The intensity of such flaking depends on the composition of the sintered material. Strength parameters of the materials studied also depend on additives composition and quantity. The lowest parameters are observed for a material that contains 1% alumina particulates. The compressive strength of a material containing zirconia particulates increases 3 times and the flexural strength 2 times.
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