High strength Ti-Fe-(In, Nb) composites with improved plasticity

被引：13
作者：
Misra, D. K. [1 ,3 ]
Sohn, S. W. [1 ]
Gabrisch, H. [3 ]
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
[3] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA
来源：
INTERMETALLICS | 2010年 / 18卷 / 03期
关键词：
Alloy design; Mechanical properties at ambient temperature; Brittleness and ductility; Melting; Electron microscopy; transmission; NANOSTRUCTURE-DENDRITE COMPOSITES; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; GLASSY ALLOY; BULK ALLOYS; TI; MICROSTRUCTURE; SYSTEM;
D O I：
10.1016/j.intermet.2009.08.005
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 Ti-Fe-(In, Nb) composites with high strength (similar to 2350 +/- 50 MPa) and reasonably good ductility (plastic strain similar to 4.5 +/- 0.5%) have been produced in the form of 2 mm as-cast rods. Analysis of the microstructure by X-ray diffractometry, scanning electron microscopy and transmission electron microscopy indicates that it consisted of beta-Ti dendrites as a primary phase and Ti (Fe, In and/or Nb) (B2) + beta-Ti (A2) as eutectic phase. Modification of atomic structure, degree of eutectic structure refinement and volume fraction of the constituent phases with the addition of in and Nb are the crucial factors in enhancing the mechanical properties of Ti-Fe-(In, Nb) composites. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：342 / 347
页数：6
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