<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The effect of roller burnishing on Vickers’ hardness and positron lifetimes in the AZ91HP magnesium alloy was studied. The microhardness increases with an increase in the burnishing force and with a decrease in the feed. The comparison of various methods of analysis of positron annihilation lifetime (PAL) spectra allowed identification of two components, which are related to solute-vacancy complexes and vacancy clusters, respectively. It was found that the increase in microhardness was related to the increase in the concentration of vacancy clusters.</p></abstract>

The effect of roller burnishing on Vickers’ hardness and positron lifetimes in the AZ91HP magnesium alloy was studied. The microhardness increases with an increase in the burnishing force and with a decrease in the feed. The comparison of various methods of analysis of positron annihilation lifetime (PAL) spectra allowed identification of two components, which are related to solute-vacancy complexes and vacancy clusters, respectively. It was found that the increase in microhardness was related to the increase in the concentration of vacancy clusters.

Positron annihilation lifetime spectroscopy study of roller burnished magnesium alloy

Department of Nuclear Methods, Institute of Physics, Maria Curie-Skłodowska University, 1 M. Curie-Skłodowskiej Sq., 20-031 Lublin, Poland, Tel.: +48 81 537 6145, Fax: +48 81 537 6191

Faculty of Mechanical Engineering, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland

Nukleonika

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

The effect of roller burnishing on Vickers’ hardness and positron lifetimes in the AZ91HP magnesium alloy was studied. The microhardness increases with an...

Positron annihilation lifetime spectroscopy study of roller burnished magnesium alloy

Published Online: Dec 01, 2015

Page range: 789 - 794

Received: Jun 26, 2015

Accepted: Aug 27, 2015

DOI: https://doi.org/10.1515/nuka-2015-0142

Keywords
AZ91HP magnesium alloy, defects, positron lifetime annihilation spectroscopy (PALS), roller burnishing, Vickers’ hardness test

© 2015 Radosław Zaleski et al., published by De Gruyter Open

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

Positron annihilation lifetime spectroscopy study of roller burnished magnesium alloy

Published Online: Dec 01, 2015

Page range: 789 - 794

Received: Jun 26, 2015

Accepted: Aug 27, 2015

DOI: https://doi.org/10.1515/nuka-2015-0142

KeywordsAZ91HP magnesium alloy, defects, positron lifetime annihilation spectroscopy (PALS), roller burnishing, Vickers’ hardness test

© 2015 Radosław Zaleski et al., published by De Gruyter Open

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

Keywords
AZ91HP magnesium alloy, defects, positron lifetime annihilation spectroscopy (PALS), roller burnishing, Vickers’ hardness test