Thermal stability of amorphous Mg50Ni50 alloy produced by mechanical alloying

D. Guzmán; S. Ordoñez; D. Serafini; P. A. Rojas; C. Aguilar; M. Santander

doi:10.1016/j.jnoncrysol.2009.10.002

Thermal stability of amorphous Mg₅₀Ni₅₀ alloy produced by mechanical alloying

D. Guzmán, S. Ordoñez, D. Serafini, P. A. Rojas, C. Aguilar, M. Santander

Universidad Adolfo Ibáñez

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

15 Scopus citations

Abstract

Amorphous Mg₅₀Ni₅₀ alloy was produced by mechanical alloying (MA) of the elemental powders Mg and Ni using a SPEX 8000D mill. The alloyed powders were microstructurally characterized by X-ray diffraction (XRD). The thermal transformation of amorphous Mg₅₀Ni₅₀ into stable intermetallics (Mg₅₀Ni₅₀ → remaining amorphous + Mg₂Ni → Mg₂Ni + MgNi₂) was analyzed using the Kissinger and isoconversional methods based on the non-isothermal differential scanning calorimetry (DSC) experiments. The apparent activation energies (E_a) and the transformation diagrams, temperature-time-transformation (T-T-T) and temperature-heating rate-transformation (T-HR-T), were obtained for both processes. A good agreement was observed between the calculated transformation curves and the experimental data, which verifies the reliability of the method utilized.

Original language	English
Pages (from-to)	120-123
Number of pages	4
Journal	Journal of Non-Crystalline Solids
Volume	356
Issue number	2
DOIs	https://doi.org/10.1016/j.jnoncrysol.2009.10.002
State	Published - 15 Jan 2010

Keywords

Alloys
Amorphous metals, metallic glasses
Mechanical alloying
Powders
Thermal properties
X-ray diffraction

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10.1016/j.jnoncrysol.2009.10.002

Cite this

@article{50417d0e94f94bdfa4224d5a1065865b,

title = "Thermal stability of amorphous Mg50Ni50 alloy produced by mechanical alloying",

abstract = "Amorphous Mg50Ni50 alloy was produced by mechanical alloying (MA) of the elemental powders Mg and Ni using a SPEX 8000D mill. The alloyed powders were microstructurally characterized by X-ray diffraction (XRD). The thermal transformation of amorphous Mg50Ni50 into stable intermetallics (Mg50Ni50 → remaining amorphous + Mg2Ni → Mg2Ni + MgNi2) was analyzed using the Kissinger and isoconversional methods based on the non-isothermal differential scanning calorimetry (DSC) experiments. The apparent activation energies (Ea) and the transformation diagrams, temperature-time-transformation (T-T-T) and temperature-heating rate-transformation (T-HR-T), were obtained for both processes. A good agreement was observed between the calculated transformation curves and the experimental data, which verifies the reliability of the method utilized.",

keywords = "Alloys, Amorphous metals, metallic glasses, Mechanical alloying, Powders, Thermal properties, X-ray diffraction",

author = "D. Guzm{\'a}n and S. Ordo{\~n}ez and D. Serafini and Rojas, {P. A.} and C. Aguilar and M. Santander",

note = "Funding Information: The authors gratefully acknowledge {\textquoteleft} Fondo Nacional Desarrollo Cient{\'i}fico y Tecnol{\'o}gico de Chile {\textquoteright}, FONDECYT Project No. 1070085 , for the financial support.",

year = "2010",

month = jan,

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doi = "10.1016/j.jnoncrysol.2009.10.002",

language = "English",

volume = "356",

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T1 - Thermal stability of amorphous Mg50Ni50 alloy produced by mechanical alloying

AU - Guzmán, D.

AU - Ordoñez, S.

AU - Serafini, D.

AU - Rojas, P. A.

AU - Aguilar, C.

AU - Santander, M.

N1 - Funding Information: The authors gratefully acknowledge ‘ Fondo Nacional Desarrollo Científico y Tecnológico de Chile ’, FONDECYT Project No. 1070085 , for the financial support.

PY - 2010/1/15

Y1 - 2010/1/15

N2 - Amorphous Mg50Ni50 alloy was produced by mechanical alloying (MA) of the elemental powders Mg and Ni using a SPEX 8000D mill. The alloyed powders were microstructurally characterized by X-ray diffraction (XRD). The thermal transformation of amorphous Mg50Ni50 into stable intermetallics (Mg50Ni50 → remaining amorphous + Mg2Ni → Mg2Ni + MgNi2) was analyzed using the Kissinger and isoconversional methods based on the non-isothermal differential scanning calorimetry (DSC) experiments. The apparent activation energies (Ea) and the transformation diagrams, temperature-time-transformation (T-T-T) and temperature-heating rate-transformation (T-HR-T), were obtained for both processes. A good agreement was observed between the calculated transformation curves and the experimental data, which verifies the reliability of the method utilized.

AB - Amorphous Mg50Ni50 alloy was produced by mechanical alloying (MA) of the elemental powders Mg and Ni using a SPEX 8000D mill. The alloyed powders were microstructurally characterized by X-ray diffraction (XRD). The thermal transformation of amorphous Mg50Ni50 into stable intermetallics (Mg50Ni50 → remaining amorphous + Mg2Ni → Mg2Ni + MgNi2) was analyzed using the Kissinger and isoconversional methods based on the non-isothermal differential scanning calorimetry (DSC) experiments. The apparent activation energies (Ea) and the transformation diagrams, temperature-time-transformation (T-T-T) and temperature-heating rate-transformation (T-HR-T), were obtained for both processes. A good agreement was observed between the calculated transformation curves and the experimental data, which verifies the reliability of the method utilized.

KW - Alloys

KW - Amorphous metals, metallic glasses

KW - Mechanical alloying

KW - Powders

KW - Thermal properties

KW - X-ray diffraction

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DO - 10.1016/j.jnoncrysol.2009.10.002

M3 - Article

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EP - 123

JO - Journal of Non-Crystalline Solids

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