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Microscopic characterization and particle distribution in a cast steel matrix composite

2016; Institute of Metals and Technology; Volume: 50; Issue: 3 Linguagem: Inglês

10.17222/mit.2015.310

1580-3414

Ana Kračun, M. Torkar, Jaka Burja, Bojan Podgornik,

Corrosion Behavior and Inhibition

The purpose of this investigation was to identify the distribution of ultrafine particles in a steel matrix introduced through a conventional melting and casting method, and above all to determine the methodology and analysing techniques suitable for the analysis and identification of ultrafine particles incorporated into the steel matrix.In the frame of this work, steels dispersed with Al2O3 ultrafine particles were produced by a conventional casting method and their microstructure investigated with light microscopy (LM), scanning electron microscopy (SEM) and auger electron spectroscopy (AES).Microstructural analyses show that the distribution of the Al2O3 ultrafine particles is non-uniform and has a high degree of agglomeration.Furthermore, for a detailed analysis of the nanoparticles a specific preparation and characterization using advanced microscopic techniques is required.