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

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

14 Citas (Scopus)

Resumen

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.

Idioma original	Inglés
Páginas (desde-hasta)	120-123
Número de páginas	4
Publicación	Journal of Non-Crystalline Solids
Volumen	356
N.º	2
DOI	https://doi.org/10.1016/j.jnoncrysol.2009.10.002
Estado	Publicada - 15 ene. 2010

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@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,

day = "15",

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

language = "English",

volume = "356",

pages = "120--123",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier",

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TY - JOUR

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

UR - http://www.scopus.com/inward/record.url?scp=72649102733&partnerID=8YFLogxK

U2 - 10.1016/j.jnoncrysol.2009.10.002

DO - 10.1016/j.jnoncrysol.2009.10.002

M3 - Article

AN - SCOPUS:72649102733

SN - 0022-3093

VL - 356

SP - 120

EP - 123

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

IS - 2

ER -

Thermal stability of amorphous Mg50Ni50 alloy produced by mechanical alloying

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Thermal stability of amorphous Mg₅₀Ni₅₀ alloy produced by mechanical alloying