Structure and property evaluation of a vacuum plasma sprayed nanostructured tungsten-hafnium carbide bulk composite

    Authors

    K. E. Rea; V. Viswanathan; A. Kruize; J. T. M. De Hosson; S. O'Dell; T. McKechnie; S. Rajagopalan; R. Vaidyanathan;S. Seal

    Comments

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    Abbreviated Journal Title

    Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.

    Keywords

    powder processing; nanoindentation; transmission electron microscopy; carbides; nanocomposites; MECHANICAL-PROPERTIES; POWDERS; INDENTATION; PARTICLE; ALLOY; LOAD; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering

    Abstract

    Vacuum plasma spray (VPS) forming of tungsten-based metal matrix nanocomposites (MMCs) has shown to be a cost effective and time saving method for the formation of bulk monolithic nanostructured then no-mechanical components. Spray drying of powder feedstock appears to have a significant effect on the improved mechanical properties of the bulk nanocomposite. The reported elastic modulus of the nanocomposite nearly doubles due to the presence of HfC nano particulates in the W matrix. High resolution transmission electron microscopy (HRTEM) revealed the retention of nanostructures at the select process conditions and is correlated with the enhanced mechanical properties of the nanocomposite. Published by Elsevier B.V.

    Journal Title

    Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing

    Volume

    477

    Issue/Number

    1-2

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    350

    Last Page

    357

    WOS Identifier

    WOS:000254780400048

    ISSN

    0921-5093

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