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Vol 15, Issue 1, 2025
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Research article
Metallic materials
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Research article Metallic materials

SOME CHALLENGES IN MEASURING THE MICROHARDNESS OF METALLIC GLASSES

By
Amra Salčinović Fetić Orcid logo ,
Amra Salčinović Fetić
Contact Amra Salčinović Fetić

University of Sarajevo , Sarajevo , Bosnia and Herzegovina

Melisa Baždar ,
Melisa Baždar

University of Sarajevo , Sarajevo , Bosnia and Herzegovina

Belma Husković ,
Belma Husković

University of Sarajevo , Sarajevo , Bosnia and Herzegovina

Ajla Karić
Ajla Karić

University of Sarajevo , Sarajevo , Bosnia and Herzegovina

University of Zurich , Zurich , Switzerland

Abstract

Measuring the material's microhardness is generally easy and quick. However, since the operator reads the dimensions, i.e., the ends of the imprint formed in the material, the measurement result is greatly influenced by the operator's assessment.

We present the research results in which three operators measured Vickers microhardness on the same impression by reading the dimensions in two ways: on the instrument's eyepiece and using a CCD camera connected to a computer. Three samples of metallic glasses from the same system, with similar properties but significantly different thicknesses (approximately 20, 50, and 90 micrometers), were used. We made 20 impressions on each sample and compared and discussed the results.

Funding Statement

„Microhardness and thermal stability of some metallic glasses“ funded by The Ministry of Education and Science of Federation of Bosnia and Herzegovina, 2023 (grant number 0101-10880-22/23).

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