Favorable microstructural modulation and enhancement of mechanical properties of Ti-Fe-Nb ultrafine composites

被引：21
作者：
Park, J. M. [2 ,3 ]
Han, J. H. [1 ]
Kim, K. B. [1 ]
Mattern, N. [2 ]
Eckert, J. [2 ,4 ]
Kim, D. -H. [3 ]
机构：
[1] Sejong Univ, Fac Nanotechnol & Adv Mat Engn, Seoul 143747, South Korea
[2] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany
[3] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea
[4] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2009年 / 89卷 / 10期
关键词：
Ti alloys; shear bands; plasticity; deformation; strength; hypereutectic; pseudo-binary eutectic; HIGH-STRENGTH; DEFORMATION-BEHAVIOR; PLASTIC-DEFORMATION; SITU COMPOSITES; BULK ALLOYS; DUCTILITY; FRACTURE; METALS; SYSTEM; GLASS;
D O I：
10.1080/09500830903236020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microstructure evolution and its influence on the mechanical properties of (Ti65.5Fe34.5)(100-x)Nb-x (x=0, 3, 5 and 7) ultrafine composites has been investigated. The Nb-containing alloys exhibit simultaneously improved compressive mechanical properties, i.e. high yield (1.9-2.2 GPa) and fracture (2.2-2.6 GPa) strength together with large plasticity (6-13%), due to a favorable modulation of their ultrafine eutectic microstructure. The enhanced mechanical properties are strongly related to the length-scale, volume fraction and distribution of proeutectic phase as well as to the refinement and interphase coherency of the alternating ultrafine eutectic layers.
引用
收藏
页码：623 / 632
页数：10
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