Thermoelastic properties across martensitic transformation of Ni<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e134" altimg="si4.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>MnGa Heusler alloy from time-resolved photothermal mirror

Bonadio, T. G. M.; Pezarini, Rogério Ribeiro; Medina, A. N.; Zanuto, Vitor Santaella; Baesso, Mauro Luciano; Montanher, D. Z.; Herculano, Leandro S.; Jacinto, Carlos; Astrath, N. G. C.

doi:10.1016/j.physb.2020.412713

Cited by 8 publications

(1 citation statement)

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“…Numerous studies have reported that the main phase of a high-entropy alloy is of type B2, to which the structure of the Ni2MnGa-based FSMAs matrix belongs [15][16][17][18][19]. These high-entropy alloys exhibit excellent mechanical and physical properties, which is due to the combination of a high degree of alloying elements in the solution and a sluggish diffusion effect [20].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Magnetic Field-Induced Strain of a Ni-Mn-Ga-Co-Gd High-Entropy Alloy

Bao

et al. 2021

Materials

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The effect of a high-entropy design on martensitic transformation and magnetic field-induced strain has been investigated in the present study for Ni-Mn-Ga-Co-Gd ferromagnetic shape-memory alloys. The purpose was to increase the martensitic transition temperature, as well as the magnetic field-induced strain, of these materials. The results show that there is a co-existence of β, γ, and martensite phases in the microstructure of the alloy samples. Additionally, the martensitic transformation temperature shows a markedly increasing trend for these high-entropy samples, with the largest value being approximately 500 °C. The morphology of the martensite exhibits typical twin characteristics of type L10. Moreover, the magnetic field-induced strain shows an increasing trend, which is caused by the driving force of the twin martensite re-arrangement strengthening.

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