Influence of applied pressure during field-assisted sintering of Ti(C,N)-WC-FeAl based nanocomposite

• Ti(C,N)-WC-FeAl based nanocomposites are processed by field-assisted sintering at 1500 degrees C. The phase and microstructural evolution during the process under the influence of different applied pressures of 30, 50 and 100 MPa are studied using x-ray diffraction and scanning electron microscopy. Lattice parameters of (Ti,W)(C,N) solid solution and binder phases after sintering are found to vary with applied pressure. The nanocomposite grains are observed to possess a core-rim microstructure. Microstructural variations in terms of type, size and fraction of "corerim" structure as a function of applied pressure are investigated. The hardness and indentation fracture toughness values are in the range of 17.6-18.4 GPa and 5.9-6.8 MPa root m, respectively. These values are comparable with those reported for Ti(C,N)-based composites with metal binder. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Keramteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Ceramics (hsv//eng)

Nyckelord

Sintering

Nanocomposites

Mechanical properties

Cutting tools

FINE TIC0.7N0.3-BASED CERMET

MECHANICAL-PROPERTIES

TI(C

N)-BASED

CERMETS

N)-BASED CERMETS

CUTTING TOOLS

MICROSTRUCTURE

COMPOSITES

FRACTURE

TI(C

PERFORMANCE

Materials Science

Ceramics

Produktions- och materialteknik

Manufacturing and materials engineering

Publikations- och innehållstyp

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