Tensile mechanical properties and fracture behavior of tungsten heavy alloys at 25-1100 °C

Xing Gong, Jinglian Fan, Fei Ding

    Research outputpeer-review

    44 Scopus citations


    The tensile mechanical properties and fracture behavior of three tungsten heavy alloys (fine-grained 93W-4.9Ni-2.1Fe-0.03Y; coarse-grained 93W-4.9Ni-2.1Fe; coarse-grained 95W-3.5Fe-1.5Ni, wt%) have been investigated in the temperature range from 25 to 1100. °C. The results show that ultimate tensile strength, yield strength, fracture strength and nominal total elongation of the three tungsten heavy alloys are strongly temperature-dependent and in most cases decrease with increasing temperature. Fractographic observations using scanning electron microscopy (SEM) show that the fracture modes of the three alloys evolve from a mixture of W cleavage and matrix phase ductile rupture at low temperatures to a mixture of tungsten/matrix and tungsten/tungsten interfacial debonding failure at elevated temperatures.

    Original languageEnglish
    Pages (from-to)315-321
    Number of pages7
    JournalMaterials Science and Engineering: A
    StatePublished - 14 Oct 2015

    ASJC Scopus subject areas

    • General Materials Science
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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