Next Article in Journal
Marginal Adaptability of Harvard MTA and Biodentine Used as Root-End Filling Material: A Comparative SEM Study
Previous Article in Journal
An Experimental and FE Modeling Investigation of the Pull-Out Behavior of Anchoring Solutions in Concrete: A Comparative Study
Previous Article in Special Issue
The Influence of Technological Parameters on the Contrast of Copper Surfaces in the Laser Marking Process
 
 
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Effects of the Addition of Iron and Chromium on the Structure and Properties of the Ni-Co-Mn-In Alloy

Institute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41500 Chorzów, Poland
*
Author to whom correspondence should be addressed.
Materials 2025, 18(19), 4597; https://doi.org/10.3390/ma18194597
Submission received: 29 July 2025 / Revised: 2 September 2025 / Accepted: 5 September 2025 / Published: 3 October 2025
(This article belongs to the Special Issue Processing of Metals and Alloys)

Abstract

In this work, small amounts of Fe or Cr were added to Ni47Co3Mn36.5In13.5 alloy (x = 0) to produce five-component alloys with nominal compositions of Ni47Co3Mn35.5In13.5Fe1, Ni47Co3Mn33.5In13.5Fe3, Ni47Co3Mn35.5In13.5Cr1, and Ni47Co3Mn33.5In13.5Cr3, which are denoted as Ni47Co3Mn36.5-xIn13.5Fex/Crx (x = 1, 3 at. % Cr/Fe) series or as Mn-series (due to the addition of alloying elements instead of Mn), and Ni47Co3Mn36.5In12.5Fe1, Ni47Co3Mn36.5In10.5Fe3, Ni47Co3Mn36.5In12.5Cr1, and Ni47Co3Mn36.5In10.5Cr3, denoted as Ni47Co3Mn36.5In13.5-x (x = 1, 3 at. % Cr/Fe) series or In-series (due to the addition of alloying elements instead of In). The polycrystalline alloys were produced using the vacuum arc melting technique. The as-received alloys were characterized in structure, homogeneity, phase composition, martensitic transformation, and microhardness. The results showed that the addition of 1 at. % of Cr or Fe positively impacted the microstructure of the alloys. The quaternary alloy exhibited a single-phase coarse-grained structure. The addition of Fe and Cr (1 at.%) caused microstructure refinement with small Fe/Cr- and Co-rich γ particles appropriately distributed in the matrix, while the addition of 3% Fe or Cr resulted in γ formation in a dendritic form distributed more randomly. The addition of 1 at. % and 3 at. % of Cr or Fe significantly influenced the martensitic transformation temperatures. The microhardness increased by 21% in the Ni47Co3Mn33.5In13.5Fe3 alloy compared to the quaternary alloy.
Keywords: magnetic shape memory alloys, microstructure, Fe-doped, Cr-doped, martensitic transformation magnetic shape memory alloys, microstructure, Fe-doped, Cr-doped, martensitic transformation

Share and Cite

MDPI and ACS Style

Matyja, E.; Prusik, K. Effects of the Addition of Iron and Chromium on the Structure and Properties of the Ni-Co-Mn-In Alloy. Materials 2025, 18, 4597. https://doi.org/10.3390/ma18194597

AMA Style

Matyja E, Prusik K. Effects of the Addition of Iron and Chromium on the Structure and Properties of the Ni-Co-Mn-In Alloy. Materials. 2025; 18(19):4597. https://doi.org/10.3390/ma18194597

Chicago/Turabian Style

Matyja, Edyta, and Krystian Prusik. 2025. "Effects of the Addition of Iron and Chromium on the Structure and Properties of the Ni-Co-Mn-In Alloy" Materials 18, no. 19: 4597. https://doi.org/10.3390/ma18194597

APA Style

Matyja, E., & Prusik, K. (2025). Effects of the Addition of Iron and Chromium on the Structure and Properties of the Ni-Co-Mn-In Alloy. Materials, 18(19), 4597. https://doi.org/10.3390/ma18194597

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop