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магнитные свойства
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2022
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DOI Доступ к ресурсу на сайте издателя
10.1002/adem.202200069
Title
On the impact of additive manufacturing processes on the microstructure and magnetic properties of Co–Ni–Ga shape memory Heusler alloys
Creator
Scheibel, Franziska
Creator
Lauhoff, Christian
Creator
Riegg, Stefan
Creator
Krooß, Philipp
Creator
Bruder, Enrico
Creator
Adabifiroozjaei, Esmaeil
Creator
Molina-Luna, Leopoldo
Creator
Böhm, Stefan
Creator
Chumlyakov, Yuri I.
Creator
Niendorf, Thomas
Creator
Gutfleisch, Oliver
Subject
аддитивные технологические процессы
микроструктура
магнитные свойства
Гейслера сплавы
Date
2022
DOI
10.1002/adem.202200069
Description
Microstructure design allows to prevent intergranular cracking and premature failure in Co–Ni–Ga shape memory alloys. Favorable grain boundary configurations are established using additive manufacturing techniques, namely, direct energy deposition (DED) and laser powder bed fusion (L-PBF). L-PBF allows to establish a columnar grain structure. In the Co–Ni–Ga alloy processed by DED, a microstructure with strong ⟨001⟩ texture is obtained. In line with optimized microstructures, the general transformation behavior is essential for performance. Transition parameters such as transition temperature and thermal hysteresis depend on chemical composition, homogeneity, and presence of precipitates. However, these parameters are highly dependent on the processing method used. Herein, the first-order magnetostructural transformation and magnetization properties of Co–Ni–Ga processed by DED and L-PBF are compared with single-crystalline and as-cast material. In the alloy processed by L-PBF, Ga evaporation and extensive formation of the ferromagnetic Co-rich γ'-phase are observed, promoting a very wide transformation range and large thermal hysteresis. In comparison, following DED, the material is characterized by minor chemical inhomogeneity and transition and magnetization behavior being similar to that of a single crystal. This clearly renders DED-processed Co–Ni–Ga to become a promising candidate material for future shape memory applications. © 2022 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH.
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Сибирский физико-технический институт
Identifier
koha:000924027
https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000924027
Type
статьи в журналах
Source
Advanced engineering materials. 2022. Vol. 24, № 10. P. 2200069 (1-11)
Language
eng
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Сибирский физико-технический институт
On the impact of additive manufacturing processes on the microstructure and magnetic properties of Co–Ni–Ga shape memory Heusler alloys
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