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

页码：623 / 632

页数：10

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