Microstructural and thermoanalytical investigations of nano-phase formation in Ti20Zr20CU60 alloy

被引：4

作者：

Pratap, A ^{[1
]}

Lad, KN

Savalia, RT

Dey, GK

Banerjee, S

机构：

[1] Maharaja Sayajirao Univ Baroda, Fac Engn & Technol, Dept Appl Phys, Condensed Matter Phys Lab, Vadodara 390001, India

[2] Bhabha Atom Res Ctr, Div Sci Mat, Bombay 400085, Maharashtra, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 375卷

关键词：

copper-based ternary alloy; crystallization; nanocrystalline phase; microstructure;

D O I：

10.1016/j.msea.2003.10.172

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The kinetics of crystallization Of Ti20Zr20Cu60 amorphous alloy has been investigated from room temperature to 773 K using differential scanning calorimetry (DSC). The thermogram exhibits two-stage crystallization in this alloy. The values of activation energy of crystallization for the two steps using Kissinger equation are 423.8 and 314.7 kJ/mol respectively. On annealing the specimen to a temperature just before the glass transition temperature, primary crystallization is observed to occur with Cu2Ti orthorhombic and CuZr cubic metastable phases. Further, annealing the specimen to a temperature just below the onset of crystallization obtained from DSC thermogram, tetragonal CuTi3 and cubic Cu5Zr equilibrium phases were found to form as observed from the selected area electron diffraction (SAED) pattern in TEM. Presence of some unidentified d-lines indicated the formation of a metastable Laves phase namely Zr2TiCu3. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：767 / 771

页数：5

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