Influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys

Keita Shinaji; Tsuyoshi Mase; Keita Isogai; Masashi Matsuura; Nobuki Tezuka; Satoshi Sugimoto

doi:10.2320/matertrans.MAW201312

Influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys

Keita Shinaji, Tsuyoshi Mase, Keita Isogai, Masashi Matsuura, Nobuki Tezuka, Satoshi Sugimoto

ENG - Materials Science

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

1 Citation (Scopus)

Abstract

This paper describes the influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys. After homogenization at 950°C for 20 h in Ar, Mn82.5Sn10CO₇.5 alloys were annealed at 900°C for 120 h in N2 and quenched to room temperature (first-annealing). The alloys were subsequently annealed at 400700° C for 5 h in N2 and quenched to room temperature (second-annealing). The coercivity of the alloys changed drastically by the second annealing. The samples subjected to second annealing at 500°C showed maximum coercivity of 1270kAm-1 and exhibited a fine two-phase microstructure. Wavelength Dispersive X-ray Spectrometer (WDS) and X-ray Diffraction (XRD) analyses revealed that the fine two-phase microstructure consists of β-Mn and perovskite-type (Mn4N-like) phases, as well as that the two phases emerged from the A phase during the second-annealing at 500°C.

Original language	English
Pages (from-to)	2007-2010
Number of pages	4
Journal	Materials Transactions
Volume	54
Issue number	10
DOIs	https://doi.org/10.2320/matertrans.MAW201312
Publication status	Published - 2013 Oct 8

Keywords

Coercivity
Heat treatment
Manganesetincobalt nitrided alloy
Two-phase microstructure

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys",

abstract = "This paper describes the influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys. After homogenization at 950°C for 20 h in Ar, Mn82.5Sn10CO7.5 alloys were annealed at 900°C for 120 h in N2 and quenched to room temperature (first-annealing). The alloys were subsequently annealed at 400700° C for 5 h in N2 and quenched to room temperature (second-annealing). The coercivity of the alloys changed drastically by the second annealing. The samples subjected to second annealing at 500°C showed maximum coercivity of 1270kAm-1 and exhibited a fine two-phase microstructure. Wavelength Dispersive X-ray Spectrometer (WDS) and X-ray Diffraction (XRD) analyses revealed that the fine two-phase microstructure consists of β-Mn and perovskite-type (Mn4N-like) phases, as well as that the two phases emerged from the A phase during the second-annealing at 500°C.",

keywords = "Coercivity, Heat treatment, Manganesetincobalt nitrided alloy, Two-phase microstructure",

author = "Keita Shinaji and Tsuyoshi Mase and Keita Isogai and Masashi Matsuura and Nobuki Tezuka and Satoshi Sugimoto",

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T1 - Influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys

AU - Shinaji, Keita

AU - Mase, Tsuyoshi

AU - Isogai, Keita

AU - Matsuura, Masashi

AU - Tezuka, Nobuki

AU - Sugimoto, Satoshi

PY - 2013/10/8

Y1 - 2013/10/8

N2 - This paper describes the influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys. After homogenization at 950°C for 20 h in Ar, Mn82.5Sn10CO7.5 alloys were annealed at 900°C for 120 h in N2 and quenched to room temperature (first-annealing). The alloys were subsequently annealed at 400700° C for 5 h in N2 and quenched to room temperature (second-annealing). The coercivity of the alloys changed drastically by the second annealing. The samples subjected to second annealing at 500°C showed maximum coercivity of 1270kAm-1 and exhibited a fine two-phase microstructure. Wavelength Dispersive X-ray Spectrometer (WDS) and X-ray Diffraction (XRD) analyses revealed that the fine two-phase microstructure consists of β-Mn and perovskite-type (Mn4N-like) phases, as well as that the two phases emerged from the A phase during the second-annealing at 500°C.

AB - This paper describes the influence of heat treatment on the microstructure and magnetic properties of MnSnCoN alloys. After homogenization at 950°C for 20 h in Ar, Mn82.5Sn10CO7.5 alloys were annealed at 900°C for 120 h in N2 and quenched to room temperature (first-annealing). The alloys were subsequently annealed at 400700° C for 5 h in N2 and quenched to room temperature (second-annealing). The coercivity of the alloys changed drastically by the second annealing. The samples subjected to second annealing at 500°C showed maximum coercivity of 1270kAm-1 and exhibited a fine two-phase microstructure. Wavelength Dispersive X-ray Spectrometer (WDS) and X-ray Diffraction (XRD) analyses revealed that the fine two-phase microstructure consists of β-Mn and perovskite-type (Mn4N-like) phases, as well as that the two phases emerged from the A phase during the second-annealing at 500°C.

KW - Coercivity

KW - Heat treatment

KW - Manganesetincobalt nitrided alloy

KW - Two-phase microstructure

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