Determination of Microstructure, Electrical Properties and Microhardness Values of Ni-Mn-Cr-Sn Heusler Alloy

Year 2025, Volume: 8 Issue: 2, 138 - 149, 23.12.2025

Fermin Ak , Mehtap Payveren Arıkan , Buket Saatçi , Mehmet Ari

https://doi.org/10.54565/jphcfum.1698822

Abstract

In this study, Ni-Mn-Cr-Sn Heusler [Ni2(Mn1-xCrx)Sn (x=0, 0.25, 0.5, 0.75 and 1, (0≤x≤1)] alloys were investigated. The determined powder samples were compressed under pressure and turned into pellets and then melted in an arc melting furnace to provide the desired Heusler conditions. After XRD analysis was performed on the samples obtained after the process, SEM, EDX and MAPPING images were taken. Phases belonging to each composition were determined by examining the XRD peaks. A backscattered detector was used in SEM, EDX and MAPPING analyses of the samples. Finally, the microhardness measurements of the samples, depending on the composition, were determined using the Vickers hardness test, and the average microhardness values obtained were measured as 486.6-805.5HV0.3. Temperature-dependent electrical measurements of the obtained samples were determined by four-point probe method (FPPT). The electrical resistance values of the samples at 320K were obtained as 0.12-400.72x10-6 (m) and 0.01-0.62 x10-6 (m) at 900 K. In addition, the temperature coefficient of electrical resistivity value (TCR) was calculated as  (1.47-3.16)x (10-3 K-1).

Keywords

Four Point Probe Technique , Heusler Alloys , Vickers Hardness

Supporting Institution

Malatya Turgut Özal University Scientific Research Projects Coordination Unit

Project Number

24H08

Thanks

This article was financially supported by Malatya Turgut Özal University Scientific Research Projects Coordination Unit with project number 24H08. The authors thank Malatya Turgut Özal University Research Foundation for their financial support. We thank the Editing Office of the Dean for Research at Erciyes University for proofreading this manuscript.

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