Feasibility study of a tungsten wire-reinforced tungsten matrix composite with ZrOx interfacial coatings

被引：79

作者：

Du, J. ^{[1
]}

Hoeschen, T. ^{[1
]}

Rasinski, M. ^{[1
,2
]}

Wurster, S. ^{[3
]}

Grosinger, W. ^{[3
]}

You, J. -H. ^{[1
]}

机构：

[1] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

[3] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 10期

关键词：

Metal-matrix composites; Fracture toughness; Interfacial strength; Debonding; Fiber push-out test; MECHANICAL-PROPERTIES; FIBER;

D O I：

10.1016/j.compscitech.2010.04.028

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Brittleness problem imposes a severe restriction on the potential application of tungsten as high-temperature structural material. In this paper, a novel toughening method for tungsten is proposed based on reinforcement by tungsten wires. The underlying toughening mechanism is analogous to that of fiber-reinforced ceramic matrix composites. Strain energy is dissipated by debonding and frictional sliding at engineered fiber/matrix interfaces. To achieve maximum composite toughness fracture mechanical properties have to be optimized by interface coating. In this work, we evaluated six kinds of ZrOx-based interface coatings. Interfacial parameters such as shear strength and fracture energy were determined by means of fiber push-out tests. The parameter values of the six coatings were comparable to each other and satisfied the criterion for crack deflection. Microscopic analysis showed that debonding occurred mostly between the W filament and the ZrOx coating. Feasibility of interfacial crack deflection was also demonstrated by a three-point bending test. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1482 / 1489

页数：8

共 20 条

[1] FIBER-MATRIX DEBONDING EFFECTS ON CRACKING IN ALIGNED FIBER CERAMIC COMPOSITES [J].

BUDIANSKY, B ;

EVANS, AG ;

HUTCHINSON, JW .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1995, 32 (3-4) :315-328

[2]

CHAWLA KK, 1993, CERAMIC MATRIX COMPO, P181

[3] Mechanical properties of tungsten and steel fiber reinforced Zr41.25Ti13.75Cu12.5Ni10Be22.5 metallic glass matrix composites [J].

Conner, RD ;

Dandliker, RB ;

Johnson, WL .

ACTA MATERIALIA, 1998, 46 (17) :6089-6102

[4] Interfacial fracture behavior of tungsten wire/tungsten matrix composites with copper-coated interfaces [J].

Du, J. ;

Hoeschen, T. ;

Rasinski, M. ;

You, J. -H. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (06) :1623-1629

[5]

DU J, J NUCL MAT IN PRESS

[6] Design and life prediction issues for high-temperature engineering ceramics and their composites [J].

Evans, AG .

ACTA MATERIALIA, 1997, 45 (01) :23-40

[7] PERSPECTIVE ON THE DEVELOPMENT OF HIGH-TOUGHNESS CERAMICS [J].

EVANS, AG .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (02) :187-206

[8] Fracture toughness investigations of tungsten alloys and SPD tungsten alloys [J].

Faleschini, M. ;

Kreuzer, H. ;

Kiener, D. ;

Pippan, R. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 367 :800-805

[9]

GRESZCZUK LB, 1969, ASTM STP, V452, P42

[10] CRACK DEFLECTION AT AN INTERFACE BETWEEN DISSIMILAR ELASTIC-MATERIALS [J].

HE, MY ;

HUTCHINSON, JW .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1989, 25 (09) :1053-1067

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