Microstructure and mechanical properties of new composite structured Ti-V-Al-Cu-Ni alloys for spring applications

被引：23

作者：

Okulov, I. V. ^{[1
,2
]}

Kuehn, U. ^{[1
]}

Marr, T. ^{[1
,2
]}

Freudenberger, J. ^{[1
,3
]}

Soldatov, I. V. ^{[1
,4
]}

Schultz, L. ^{[1
,2
]}

Oertel, C. -G. ^{[5
]}

Skrotzki, W. ^{[5
]}

Eckert, J. ^{[1
,2
]}

机构：

[1] IFW Dresden, D-01069 Dresden, Germany

[2] Tech Univ Dresden, Inst Werkstoffwissensch, D-01062 Dresden, Germany

[3] Tech Univ Bergakad Freiberg, Inst Werkstoffwissensch, D-09599 Freiberg, Germany

[4] Ural Fed Univ, Inst Nat Sci, Ekaterinburg 620000, Russia

[5] Tech Univ Dresden, Inst Strukturphys, D-01062 Dresden, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 603卷

关键词：

Titanium alloys; Tensile ductility; Electron microscopy; Mechanical characterization; Fracture;

D O I：

10.1016/j.msea.2014.02.070

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

New as-cast Ti-V-Al-Cu-Ni alloys with advantageous modulus of resilience and bioperformance were developed. Their microstructure is composed of a dendritic beta-Ti phase and in-situ precipitated interdendritic compounds. The tough and ductile beta-Ti phase exhibits a relatively low Young's modulus. Ultrafine intermetallics effectively strengthen the alloys. The effect of microstructure on tensile plasticity was studied on strained (in-situ) and fractured (ex-situ) samples in the scanning electron microscope. It was found that the ductility depends on the volume fraction/distribution of the intermetallic phases as well as local segregation. Already in the as-cast state Ti68.8V13.6Cu6Ni5.1Al6.5 exhibits a tensile strength of about 1250 MPa and a ductility of about 4.5%. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：76 / 83

页数：8

共 16 条

[1]

Boyer Rodney., 2007, Materials properties handbook: titanium alloys

[2]

Dieter George Ellwood, 1976, Mechanical metallurgy, V3

[3] Ti based biomaterials, the ultimate choice for orthopaedic implants - A review [J].

Geetha, M. ;

Singh, A. K. ;

Asokamani, R. ;

Gogia, A. K. .

PROGRESS IN MATERIALS SCIENCE, 2009, 54 (03) :397-425

[4] A Novel Metastable Ti-25Nb-2Mo-4Sn Alloy with High Strength and Low Young's Modulus [J].

Guo, Shun ;

Bao, Zhenzhen ;

Meng, Qingkun ;

Hu, Liang ;

Zhao, Xinqing .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2012, 43A (10) :3447-3451

[5] Bimodal structured Ti-base alloy with large elasticity and low Young's modulus [J].

He, G ;

Hagiwara, M .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2005, 25 (03) :290-295

[6] Composition dependence of the microstructure and the mechanical properties of nano/ultrafine-structured Ti-Cu-Ni-Sn-Nb alloys [J].

He, G ;

Eckert, J ;

Löser, W ;

Hagiwara, M .

ACTA MATERIALIA, 2004, 52 (10) :3035-3046

[7] Nanostructured Ti-based multi-component alloys with potential for biomedical applications [J].

He, G ;

Eckert, J ;

Dai, QL ;

Sui, ML ;

Loser, W ;

Hagiwara, M ;

Ma, E .

BIOMATERIALS, 2003, 24 (28) :5115-5120

[8] Novel Ti-base nanostructure-dendrite composite with enhanced plasticity [J].

He, G ;

Eckert, J ;

Löser, W ;

Schultz, L .

NATURE MATERIALS, 2003, 2 (01) :33-37

[9] Influence of boron and oxygen on the microstructure and mechanical properties of high-strength Ti66Nb13Cu8Ni6.8Al6.2 alloys [J].

Helth, A. ;

Siegel, U. ;

Kuehn, U. ;

Gemming, T. ;

Gruner, W. ;

Oswald, S. ;

Marr, T. ;

Freudenberger, J. ;

Scharnweber, J. ;

Oertel, C. -G. ;

Skrotzki, W. ;

Schultz, L. ;

Eckert, J. .

ACTA MATERIALIA, 2013, 61 (09) :3324-3334

[10]

Ilyin AA., 2009, TITANIUM ALLOYS COMP

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