Using X-ray microdiffraction to determine grain sizes at selected positions in disks processed by high-pressure torsion

Tamás Ungár, Levente Balogh, Yuntian T. Zhu, Zenji Horita, Cheng Xu, Terence G. Langdon

    Research output: Contribution to journalArticlepeer-review

    58 Citations (Scopus)

    Abstract

    Disks of pure Cu, Cu-10% Zn and Cu-30% Zn were processed by high-pressure torsion (HPT) and then examined at selected positions using microhardness testing and X-ray microdiffraction line broadening. The results show excellent agreement between the microhardness measurements and X-ray microdiffraction. The grain sizes and the microhardness values are essentially constant across the diameters of the disks of pure Cu and the Cu-30% Zn alloy but for the Cu-10% Zn alloy the measured grain size is largest and the hardness is lowest in the center of the disk. The results demonstrate the potential for achieving a reasonably homogeneous microstructure in samples processed by HPT.

    Original languageEnglish
    Pages (from-to)153-156
    Number of pages4
    JournalMaterials Science and Engineering A
    Volume444
    Issue number1-2
    DOIs
    Publication statusPublished - Jan 25 2007

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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