Thermal stability of amorphous Mg50Ni50 alloy produced by mechanical alloying

被引：14

作者：

Guzman, D. ^{[1
,2
]}

Ordonez, S. ^{[3
]}

Serafini, D. ^{[4
,5
]}

Rojas, P. A. ^{[6
]}

Aguilar, C. ^{[7
]}

Santander, M. ^{[1
,2
]}

机构：

[1] Univ Atacama, Fac Ingn, Dept Ingn Met, Copiapo, Chile

[2] Ctr Reg Invest & Desarrollo Sustentable Atacama, Copiapo, Chile

[3] Univ Santiago Chile, Fac Ingn, Dept Ingn Met, Santiago, Chile

[4] Univ Santiago Chile, Fac Ciencias, Dept Fis, Santiago, Chile

[5] CIMAT, Ctr Interdisciplinary Res Mat, Santiago, Chile

[6] PUCV, Fac Ingn, Escuela Ingn Mecan, Valparaiso, Chile

[7] Univ Austral Chile, Fac Ciencias Ingn, Inst Mat & Proc Termomecan, Valdivia, Chile

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2010年 / 356卷 / 02期

关键词：

Amorphous metals; metallic glasses; Alloys; Mechanical alloying; X-ray diffraction; Powders; Thermal properties; T-HR-T; KINETIC-ANALYSIS; HEATING RATE; CRYSTALLIZATION BEHAVIOR; TEMPERATURE; CURVES;

D O I：

10.1016/j.jnoncrysol.2009.10.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 iso-conversional 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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：120 / 123

页数：4

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