Influence of heat of formation of B2/L12 intermetallic compounds on the milling energy for their formation during mechanical alloying

被引：26

作者：

Abhik, N. C. ^{[1
]}

Vivek, R. ^{[1
]}

Udhayabanu, V. ^{[1
]}

Murty, B. S. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 465卷 / 1-2期

关键词：

Mechanical alloying; Milling energy; Enthalpy of formation; Intermetallic;

D O I：

10.1016/j.jallcom.2007.10.076

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper an attempt has been made to arrive at a relation between the heat of formation of an intermetallic and the milling energy required for its formation during mechanical alloying. This has been demonstrated in case of B2 intermetallic compounds, namely, NiAl, FeAl, CoAl and MnAl. The milling energy corresponding to the start of formation of the compounds during mechanical alloying of the elemental blends is found to decrease linearly with the heat of formation of the intermetallics, calculated using the Miedema's model. Al3Zr, Ni3Al, Ni3Mn, CoFe, NiTi, Zr3Co are also synthesized in an attempt to test the strength of the hypothesis over a wider range of compounds as well as enthalpy of mixing. An attempt has been made to understand the mechanism of the compound formation. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：106 / 112

页数：7

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