Formation of γ-Cu67Al33 alloy by mechanical alloying

被引：20

作者：

de Lima, JC ^{[1
]}

Triches, DM ^{[1
]}

dos Santos, VHF ^{[1
]}

Grandi, TA ^{[1
]}

机构：

[1] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 282卷 / 1-2期

关键词：

mechanical alloying; Cu; Al; phase analysis; nanostructures; chemical synthesis;

D O I：

10.1016/S0925-8388(98)00830-5

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, we show the results for nanostructured gamma-Cu67Al33 alloy obtained by alloying mechanically elemental Cu and Al powders at room temperature. The severe plastic deformations produced by milling together with local temperature were not enough to promote successfully the solid state reaction. It causes a slowdown in reaction kinetics that yielded a poor crystallinity alloy showing a symmetry associated with space group I-43M. To reach the expected symmetry, space group P-43M, annealing at an appropriate temperature was performed. In addition, the crystallinity was improved and structural relaxation promoted. The adequate temperature as well as enthalpy associated with the space group change were determined by DSC measurements. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：258 / 260

页数：3

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