Phase evolution and properties of Ni50Co23Fe 2Ga25 Heusler alloy undercooled by electromagnetic levitation

R. V.S. Prasad; G. Phanikumar

doi:10.1016/j.intermet.2011.07.009

Phase evolution and properties of Ni₅₀Co₂₃Fe ₂Ga₂₅ Heusler alloy undercooled by electromagnetic levitation

R. V.S. Prasad, G. Phanikumar

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Microstructure and properties of bulk samples of Ni₅₀Co ₂₃Fe₂Ga₂₅ Heusler alloy undercooled and solidified in an electromagnetic levitation facility have been studied. Microstructure characterization showed the samples to consist of a mixture of fcc phase and non-modulated tetragonal martensite phase at low undercoolings and a single phase microstructure containing only martensite at high undercooling. The fcc phase content increases with undercooling up to 170 K and then disappears at undercooling above 200 K. Hardness and magnetization correlate differently with the phase content of the sample.

Original language	English
Pages (from-to)	1705-1710
Number of pages	6
Journal	Intermetallics
Volume	19
Issue number	11
DOIs	https://doi.org/10.1016/j.intermet.2011.07.009
Publication status	Published - Nov 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.intermet.2011.07.009

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title = "Phase evolution and properties of Ni50Co23Fe 2Ga25 Heusler alloy undercooled by electromagnetic levitation",

abstract = "Microstructure and properties of bulk samples of Ni50Co 23Fe2Ga25 Heusler alloy undercooled and solidified in an electromagnetic levitation facility have been studied. Microstructure characterization showed the samples to consist of a mixture of fcc phase and non-modulated tetragonal martensite phase at low undercoolings and a single phase microstructure containing only martensite at high undercooling. The fcc phase content increases with undercooling up to 170 K and then disappears at undercooling above 200 K. Hardness and magnetization correlate differently with the phase content of the sample.",

author = "Prasad, {R. V.S.} and G. Phanikumar",

note = "Funding Information: One of the authors (GP) gratefully acknowledges financial support from Indian Space Research Organization for financial support in setting up the national electromagnetic levitation facility at IIT Madras. The authors thank Dr. M. Manivel Raja, Advanced Magnetics Group, Defense Metallurgical Laboratory, Hyderabad for magnetic measurements and useful discussions.",

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doi = "10.1016/j.intermet.2011.07.009",

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T1 - Phase evolution and properties of Ni50Co23Fe 2Ga25 Heusler alloy undercooled by electromagnetic levitation

AU - Prasad, R. V.S.

AU - Phanikumar, G.

N1 - Funding Information: One of the authors (GP) gratefully acknowledges financial support from Indian Space Research Organization for financial support in setting up the national electromagnetic levitation facility at IIT Madras. The authors thank Dr. M. Manivel Raja, Advanced Magnetics Group, Defense Metallurgical Laboratory, Hyderabad for magnetic measurements and useful discussions.

PY - 2011/11

Y1 - 2011/11

N2 - Microstructure and properties of bulk samples of Ni50Co 23Fe2Ga25 Heusler alloy undercooled and solidified in an electromagnetic levitation facility have been studied. Microstructure characterization showed the samples to consist of a mixture of fcc phase and non-modulated tetragonal martensite phase at low undercoolings and a single phase microstructure containing only martensite at high undercooling. The fcc phase content increases with undercooling up to 170 K and then disappears at undercooling above 200 K. Hardness and magnetization correlate differently with the phase content of the sample.

AB - Microstructure and properties of bulk samples of Ni50Co 23Fe2Ga25 Heusler alloy undercooled and solidified in an electromagnetic levitation facility have been studied. Microstructure characterization showed the samples to consist of a mixture of fcc phase and non-modulated tetragonal martensite phase at low undercoolings and a single phase microstructure containing only martensite at high undercooling. The fcc phase content increases with undercooling up to 170 K and then disappears at undercooling above 200 K. Hardness and magnetization correlate differently with the phase content of the sample.

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Phase evolution and properties of Ni₅₀Co₂₃Fe ₂Ga₂₅ Heusler alloy undercooled by electromagnetic levitation

Abstract

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