Phase transformations study on Ni75Al25 and Ni50Al50 during mechanical alloying and sintering

被引：10

作者：

D'Angelo, L.

Gonzalez, G.

Ochoa, J.

机构：

[1] Inst Venezolano Invest Cient, Dept Ingn, Lab Ciencias & Ing Mat, Caracas 1020A, Venezuela

[2] UNEXPO, Dept Mecan, Charallave, Venezuela

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷

关键词：

intermetallics; nanostructure materials; mechanical alloying; X-ray diffraction;

D O I：

10.1016/j.jallcom.2006.08.212

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 the present work we study the phase transformations taking place by mechanical alloying in the Ni-Al system and with further consolidation by sintering at high pressures with the aim of maintaining nanometric grain size. Different phase transformations were observed during milling, a Ni(Al) saturated solid solution for Ni-25 at.%Al and the formation of the intermetallic compound for Ni-50 at.%Al. Amorphization and recrystallization was also observed after prolonged milling. These phases remain after sintering with nanometric grain size and very high values of hardness. (C) 2006 Elsevier B.V. All rights reserved.

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页码：348 / 353

页数：6

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