Evaluating the influence of pressure and torsional strain on processing by high-pressure torsion

Cheng Xu, Zenji Horita, Terence G. Langdon

    研究成果: Contribution to journalArticle査読

    60 被引用数 (Scopus)

    抄録

    Tests were conducted on an Al-6061 alloy to evaluate the separate effects of the applied pressure and the torsional straining in processing by high-pressure torsion (HPT). The values of the Vickers microhardness were measured after processing and plotted both linearly across the diameters of the disks and as three-dimensional representations. The measurements show that the applied pressure increases the hardness in the absence of torsional straining. In the presence of a pressure and torsional straining, the hardness values are high at the edges of the disk but lower in the central region. There is a gradual evolution toward a hardness homogeneity with increasing numbers of HPT revolutions. The hardness values at the edges of the disks are reasonably independent of the applied pressure but the extent of this region of high hardness depends upon both the applied pressure and the numbers of turns in the HPT processing.

    本文言語英語
    ページ(範囲)7286-7292
    ページ数7
    ジャーナルJournal of Materials Science
    43
    23-24
    DOI
    出版ステータス出版済み - 12 2008

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 材料力学
    • 機械工学

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