Magnetic pulse controlled microstructure development in Co49Ni21Ga30 single crystals. Issue 16 (2nd November 2018)

• Record Type: Journal Article
• Authors: Gerstein, Gregory; Firstov, Georgiy; Chumlyakov, Yuri; Krooß, Philipp; Niendorf, Thomas; Dalinger, Andrej; Maier, Hans Jürgen
• Is Part Of: Materials science and technology. Volume 34:Issue 16(2018)
• Page Start: 1954
• Page End: 1964
• Publication Date: 2018-11-02
• Subjects: Domain structure -- magnetic phase transition -- nano-twins -- martensitic transformations -- magnetic shape memory alloy -- pulsed magnetic field; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2018.1497129
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: A pulsed magnetic field (MF) up to 0.6 T leads to the generation of fine microstructure through the change in the dynamics of the interaction process between the MF and the magnetic- and microstructure in Co49 Ni21 Ga30 magnetic shape memory alloy single crystals. This paper addresses the impact of pulsed and permanent MF on the transformation behaviour in Co49 Ni21 Ga30 . A pulsed MF can result in different microstructural accommodation processes in stress-induced martensite, as compared to an application of a mechanical stress or permanent MF. In a pulsed MF, the development of new nano-twin systems in the martensitic structure of the CoNiGa alloy and the formation of fine magnetic domains at the microscale are observed.