High strength hypereutectic Ti-Fe-Ga composites with improved plasticity

被引:14
作者
Misra, D. K. [1 ]
Sohn, S. W. [1 ]
Kim, W. T. [2 ]
Kim, D. H. [1 ]
机构
[1] Yonsei Univ, Ctr Noncrystalline Mat, Dept Met Engn, Seoul 120749, South Korea
[2] Cheongju Univ, Dept Phys, Cheongju 360764, South Korea
关键词
Composites; Mechanical properties at ambient temperature; Melting; Electron microscopy; scanning; transmission; NANOSTRUCTURE-DENDRITE COMPOSITES; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; AMORPHOUS-ALLOYS; METALLIC-GLASS; MICROSTRUCTURE; SYSTEM;
D O I
10.1016/j.intermet.2009.07.022
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
Bulk-type (Ti0.65Fe0.35)(100-x)Ga-x (x = 0, 2, 4 at.%) ultrafine composites with high strength and plasticity have been prepared. The composites have a hypereutectic microstructure with primary FeTi phase and (beta-Ti + FeTi) eutectic matrix. The composites exhibit high fracture strength of 2290-2766 MPa and large plasticity of 4.8-6.5% under compression. Refinement of eutectic structure and control of relative areal fraction of the constituent phases are the crucial factors in determining the mechanical properties. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:254 / 258
页数:5
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