Improvement of mechanical properties of chromium-nickel sintered compacts by multiple rolling

Y. Harada*, M. Ohmori, F. Yoshida, R. Nowak

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)

    Abstract

    The present paper provides details on the thermomechanical treatment of chromium-nickel alloys with high content of chromium, which leads to considerable improvement of their mechanical properties. The investigated alloys were prepared from Cr-Ni powder mixtures containing 50% and 80% of chromium in mass. They were formed by a particular sequence of cold and hot isostatic pressing. The as-sintered compacts were essentially brittle at room temperature, while they have exhibited considerable ductility after the special thermomechanical treatments. The treatment consisted of a sequence of repeated rolling and annealing operations, which is relatively simple and applicable in the industrial production. It is found that the treatments led to a more homogeneous, better alloyed structure and enhanced interdiffusion of the component metals.

    Original languageEnglish
    Pages (from-to)1142-1150
    Number of pages9
    JournalMaterials Letters
    Volume57
    Issue number5-6
    DOIs
    Publication statusPublished - Jan 2003
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Chromium-nickel alloys
    • Ductility
    • Interdiffusion
    • Mechanical properties
    • Sintering
    • Thermomechanical treatment

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