<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Nowadays, various small specimen test techniques have gained wide popularity and appreciation among researchers as they offer undoubtful benefits in terms of structural material characterisation. This paper focuses on small punch tests (SPTs) performed on small-sized disc specimens to assess the mechanical properties of 14Cr oxide dispersion strengthened (ODS) steel. A numerical model was established to support experimental data and gain deeper insight into complex strain states developing in a deformed specimen. Modern evaluation procedures were discussed for obtaining mechanical properties from the small punch force-deflection response and were compared with the literature. Applicability and universality of those relations at different test conditions were also studied. It appeared that different ball diameters used had negligible influence on yield point but strongly affected ultimate strength estimation. It was found that friction belongs to decisive factors determining strain distribution in samples, as dry conditions increase the peak strain and move its location farther from the punch pole.</p>
</abstract>

Nowadays, various small specimen test techniques have gained wide popularity and appreciation among researchers as they offer undoubtful benefits in terms of structural material characterisation. This paper focuses on small punch tests (SPTs) performed on small-sized disc specimens to assess the mechanical properties of 14Cr oxide dispersion strengthened (ODS) steel. A numerical model was established to support experimental data and gain deeper insight into complex strain states developing in a deformed specimen. Modern evaluation procedures were discussed for obtaining mechanical properties from the small punch force-deflection response and were compared with the literature. Applicability and universality of those relations at different test conditions were also studied. It appeared that different ball diameters used had negligible influence on yield point but strongly affected ultimate strength estimation. It was found that friction belongs to decisive factors determining strain distribution in samples, as dry conditions increase the peak strain and move its location farther from the punch pole.

Experimental and Numerical Small Punch Tests of the 14Cr ODS Ferritic Steel

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Experimental and Numerical Small Punch Tests of the 14Cr ODS Ferritic Steel"}

Nowadays, various small specimen test techniques have gained wide popularity and appreciation among researchers as they offer undoubtful benefits in terms of...

Experimental and Numerical Small Punch Tests of the 14Cr ODS Ferritic Steel

Published Online: Jul 01, 2022

Page range: 225 - 232

Received: Mar 30, 2022

Accepted: May 16, 2022

DOI: https://doi.org/10.2478/ama-2022-0027

Keywords
ODS ferritic steel, mechanical alloying, small punch testing, finite element method, yield stress, ultimate tensile strength

© 2022 Krzysztof Nowik et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Experimental and Numerical Small Punch Tests of the 14Cr ODS Ferritic Steel

Published Online: Jul 01, 2022

Page range: 225 - 232

Received: Mar 30, 2022

Accepted: May 16, 2022

DOI: https://doi.org/10.2478/ama-2022-0027

KeywordsODS ferritic steel, mechanical alloying, small punch testing, finite element method, yield stress, ultimate tensile strength

© 2022 Krzysztof Nowik et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
ODS ferritic steel, mechanical alloying, small punch testing, finite element method, yield stress, ultimate tensile strength