Investigation of Ti-Fe-Co bulk alloys with high strength and enhanced ductility

被引：132
作者：
Louzguine-Luzgin, DV
Louzguina-Luzgina, LV
Kato, H
Inoue, A
机构：
[1] Tohoku Univ, Inst Mat Res, Lab Nonequilibrium Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy, CREST, Res & Dev Project, Sendai, Miyagi 9858577, Japan
来源：
ACTA MATERIALIA | 2005年 / 53卷 / 07期
关键词：
mechanical properties; X-ray diffraction; scanning electron microscopy;
D O I：
10.1016/j.actamat.2005.01.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-strength Ti-Fe-Co alloys were produced in the shape of arc-melted ingots with the dimensions of about 20-25 mm in diameter and 7-10 mm in height. The structure of the Ti-Fe-Co alloys (at Fe/Co ratio > 1) studied by X-ray diffractometry and scanning electron microscopy consisted of an ordered Pm3m Ti(FeCo) compound and a disordered body-centered cubic Im3m beta-Ti solid solution. The optimization of the Ti-Fe-Co alloy composition is performed from the viewpoint of both high strength and ductility. The strongest Ti-Fe Co alloys have a hypereutectic structure and exhibit a high strength of about 2000 MPa and a plastic deformation of 15%. The high strength and ductility values can be achieved without using the injection mould casting or rapid solidification procedure. The deformation behavior and the fractography of Ti-Fe-Co alloys are studied in detail. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2009 / 2017
页数：9
相关论文
共 32 条
[1]  
Boyer R.R., 1984, BETA TITANIUM ALLOYS, P441
[2]  
Brandes E. A., 1992, SMITHELLS METALS REF, V7th ed., p22
[3]  
BRANDES EA, 1992, SMITHELLS METALS REF, P11
[4]   An overview of monolithic titanium aluminides based on Ti3Al and TiAl [J].
Djanarthany, S ;
Viala, JC ;
Bouix, J .
MATERIALS CHEMISTRY AND PHYSICS, 2001, 72 (03) :301-319
[5]  
DWIGHT AE, 1959, T AM I MIN MET ENG, V215, P283
[6]  
Gale W.F., 2004, Smithells Metals Reference Book, V8, P13
[7]  
Gale W. F., 2004, SMITHELLS METALS REF
[8]  
Gale W.F, 2004, SMITHELLS METALS REF, P31, DOI [10.1016/B978-075067509-3/50034-8, DOI 10.1016/B978-075067509-3/50034-8]
[9]  
GALE WF, 2004, SMITHELLS METALS REF, P22
[10]   Microstructure controlled shear band pattern formation and enhanced plasticity of bulk metallic glasses containing in situ formed ductile phase dendrite dispersions [J].
Hays, CC ;
Kim, CP ;
Johnson, WL .
PHYSICAL REVIEW LETTERS, 2000, 84 (13) :2901-2904
1234