Severe plastic deformation in Gum Metal with composition at the structural stability limit

Tadahiko Furuta, Masashi Hara, Zenji Horita, Shigeru Kuramoto

    研究成果: Contribution to journalArticle査読

    11 被引用数 (Scopus)

    抄録

    The effects of severe plastic deformation on the mechanical properties and deformation behavior of Gum Metal with a nominal composition of Ti-36Nb-2Ta-3Zr-0.3O (mass.%) were investigated using high-pressure torsion (HPT). Applying the HPT process, the alloy shows ultra-low Young's modulus, high strength, extended elastic limit, high ductility, and very low hardening during HPT. The tensile strength of Gum Metal increases with increasing equivalent strain, while work hardening is much smaller than reported values for other common metallic materials. The deformation structure is composed of ultrafine grains produced by transgranular shear through application of HPT. These results suggest that the strengthening mechanism of Gum Metal is attributable to a unique plastic deformation which operates in the region where the local stress reaches values close to that of ideal strength.

    本文言語英語
    ページ(範囲)1217-1221
    ページ数5
    ジャーナルInternational Journal of Materials Research
    100
    9
    DOI
    出版ステータス出版済み - 2009

    All Science Journal Classification (ASJC) codes

    • 凝縮系物理学
    • 物理化学および理論化学
    • 金属および合金
    • 材料化学

    フィンガープリント

    「Severe plastic deformation in Gum Metal with composition at the structural stability limit」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル