Structural analysis of mechanically alloyed nanocrystalline Fe75Si15Al10 powders

被引：23

作者：

Kalita, M. P. C. ^{[1
]}

Perumal, A. ^{[1
]}

Srinivasan, A. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Gauhati 781039, India

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 03期

关键词：

mechanical alloying; nanocrystalline powders; DO3; structure; dislocation density; internal strain;

D O I：

10.1016/j.matlet.2006.05.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline Fe75Si15Al10 powders were synthesized by ball milling elemental powders followed by heat treatment at elevated temperatures. The milling process produced a non-equilibrium solid solution of bee alpha-Fe(Si,Al). This solid solution transforms into an ordered DO3 crystal structure after annealing at 700 degrees C. Growth of the DO3 structure with annealing time was studied by comparing the corresponding average crystallite size and long-range order parameter. The milling process was studied by analyzing the X-ray diffraction patterns using the Williamson-Hall and Ungar et al. methods. The applicability of the two methods for the present data is discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：824 / 826

页数：3

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